Overview - ActForNet eSpace Unified... · 1 Introduction 1.1 Basic Concepts eSpace UC solution is a...

Huawei eSpace Unified Communications Solution

V2.2

Overview

Issue 02

Date 2014-7-28

HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2014. All rights reserved.

No part of this document may be reproduced or transmitted in any form or by any means without prior writtenconsent of Huawei Technologies Co., Ltd. Trademarks and Permissions

and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.All other trademarks and trade names mentioned in this document are the property of their respective holders. NoticeThe purchased products, services and features are stipulated by the contract made between Huawei and thecustomer. All or part of the products, services and features described in this document may not be within thepurchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information,and recommendations in this document are provided "AS IS" without warranties, guarantees or representationsof any kind, either express or implied.

The information in this document is subject to change without notice. Every effort has been made in thepreparation of this document to ensure accuracy of the contents, but all statements, information, andrecommendations in this document do not constitute a warranty of any kind, express or implied.

Huawei Technologies Co., Ltd.Address: Huawei Industrial Base

Bantian, LonggangShenzhen 518129People's Republic of China

Website: http://enterprise.huawei.com

Issue 02 (2014-7-28) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.

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http://enterprise.huawei.com

About This Document

OverviewThis document describes the eSpace Unified Communications (UC) solution (eSpace UC) fromaspects of the architecture, networking, and features.

Intended AudienceThis document is intended for:l Huawei technical support engineersl Enterprise operation and maintenance engineerl Enterprise system administratorsl Huawei pre-sale engineers

Symbol Conventions

Symbol ConventionsThe symbols that may be found in this document are defined as follows.

Symbol Description

Indicates an imminently hazardous situation which, if notavoided, will result in death or serious injury.

Indicates a potentially hazardous situation which, if notavoided, could result in death or serious injury.

Indicates a potentially hazardous situation which, if notavoided, may result in minor or moderate injury.

Huawei eSpace Unified Communications SolutionOverview About This Document


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Symbol Description

Indicates a potentially hazardous situation which, if notavoided, could result in equipment damage, data loss,performance deterioration, or unanticipated results.NOTICE is used to address practices not related topersonal injury.

Calls attention to important information, best practices andtips.NOTE is used to address information not related topersonal injury, equipment damage, and environmentdeterioration.

General ConventionsConvention Description

Times New Roman Normal paragraphs are in Times New Roman.

Boldface Names of files, directories, folders, and users are inboldface. For example, log in as user root.

Italic Book titles are in italics.

Courier New Terminal display is in Courier New.

Command ConventionsConvention Description

Boldface The keywords of a command line are in boldface.

Italic Command arguments are in italic.

[ ] Items (keywords or arguments) in square brackets [ ] areoptional.

{ x | y | ... } Alternative items are grouped in braces and separated byvertical bars. One is selected.

[ x | y | ... ] Optional alternative items are grouped in square bracketsand separated by vertical bars. One or none is selected.

{ x | y | ... } * Alternative items are grouped in braces and separated byvertical bars. A minimum of one or a maximum of all canbe selected.

[ x | y | ... ] * Alternative items are grouped in braces and separated byvertical bars. None or a maximum of all can be selected.



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GUI Conventions

Convention Description

Boldface Buttons, menus, parameters, tabs, window, and dialogtitles are in boldface. For example, click OK.

> Multi-level menus are in boldface and separated by the ">"signs. For example, choose File > Create > Folder.

Keyboard Operation

Format Description

Key Press the key. For example, press Enter and press Tab.

Key 1+Key 2 Press the keys concurrently. For example, pressing Ctrl+Alt+A means the three keys should be pressedconcurrently.

Key 1, Key 2 Press the keys in turn. For example, pressing Alt, A meansthe two keys should be pressed in turn.

Mouse Operation

Action Description

Click Select and release the primary mouse button withoutmoving the pointer.

Double-click Press the primary mouse button twice continuously andquickly without moving the pointer.

Drag Press and hold the primary mouse button and move thepointer to a certain position.

Change HistoryUpdates between document issues are cumulative. Therefore, the latest document issue containsall updates made in previous issues.

Issue 02 (2014-07-28)This issue is the first release.



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Issue 01 (2014-05-20)This is the first issue for the FOA.



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Contents

About This Document.....................................................................................................................ii

1 Introduction....................................................................................................................................11.1 Basic Concepts...............................................................................................................................................................11.2 Highlights and Customer Benefits..................................................................................................................................1

2 Architecture....................................................................................................................................62.1 Overview........................................................................................................................................................................62.2 Terminal and Access Layer............................................................................................................................................72.3 Call Management Layer...............................................................................................................................................122.4 Service Application Layer............................................................................................................................................132.5 Management and Maintenance Layer...........................................................................................................................152.6 Security Protection Layer.............................................................................................................................................15

3 Typical Network..........................................................................................................................163.1 Single-Node Network...................................................................................................................................................163.2 Multi-Node Network....................................................................................................................................................183.2.1 Centralized Call Management Network....................................................................................................................183.2.2 Distributed Call Management Network (Peer-to-Peer Mode)...................................................................................203.2.3 Distributed Call Management Network (Convergent Mode)....................................................................................223.3 Service Server Deployment..........................................................................................................................................23

4 Features..........................................................................................................................................244.1 Voice Service List........................................................................................................................................................244.2 Advanced Secretary Service.........................................................................................................................................294.3 Audio Paging................................................................................................................................................................304.4 Hunt Group...................................................................................................................................................................314.5 Automatic Switchboard................................................................................................................................................324.6 Voice Conferencing......................................................................................................................................................334.7 Console.........................................................................................................................................................................354.8 Directory.......................................................................................................................................................................374.9 Voice Mailbox..............................................................................................................................................................384.10 Unified Messaging......................................................................................................................................................414.11 Recording....................................................................................................................................................................444.12 Instant Messaging.......................................................................................................................................................45

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4.13 Group..........................................................................................................................................................................474.14 Presence......................................................................................................................................................................484.15 Multimedia Conferencing...........................................................................................................................................484.16 IP Phone Linkage........................................................................................................................................................53

5 Reliability......................................................................................................................................565.1 Reliability Panorama....................................................................................................................................................565.2 Redundancy Backup for Key Modules.........................................................................................................................595.3 Two-Node Cluster and Clustering................................................................................................................................615.4 Remote Disaster Recovery...........................................................................................................................................665.5 Local Regeneration.......................................................................................................................................................695.6 Network-Outage Local Switching and Power-Off Survival.........................................................................................705.7 Terminal Reliability......................................................................................................................................................72

6 Security..........................................................................................................................................736.1 Terminal Access Security.............................................................................................................................................736.2 Communication Service Security.................................................................................................................................756.3 Management Plane Security.........................................................................................................................................786.4 IP Network Security.....................................................................................................................................................78

7 Openness.......................................................................................................................................80

8 Operation and Maintenance......................................................................................................848.1 Centralized NE Monitoring..........................................................................................................................................848.2 Centralized Service Management.................................................................................................................................858.3 Batch NE Configuration and Upgrade..........................................................................................................................868.4 Local Configuration and Maintenance.........................................................................................................................868.5 Statistics Query.............................................................................................................................................................87

9 CDR and Billing..........................................................................................................................88

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1 Introduction

1.1 Basic ConceptseSpace UC solution is a leading unified communications solution developed by Huawei forenterprises. With the SIP-based open platform design, eSpace UC solution provides diversifiedservices, allows access for multiple terminals, and features high reliability, simplifieddeployment, and easy integration.

eSpace UC solution is ideal for small office home office (SOHO), and small, medium, and largeenterprises. Facing a growing demand for collaborative work, eSpace UC solution offers unifiedcollaboration methods for a more cooperative work environment by integrating various mobileterminals and collaborative services, such as instant messaging, voice calling, video calling, andvideo conferencing. These collaboration methods help enterprises improve competitiveness,cross-regional communication, information gathering and exchange, and overall workefficiency.

1.2 Highlights and Customer BenefitseSpace UC solution facilitates more effective communication and collaboration and is designedwith strong security, high reliability, and an open architecture.

Built-in Conference Call SystemeSpace UC solution uses eSpace U1911/U1960/U1980/U1981 to provide the built-in conferencecall system, which supplies abundant audio conference resources and supports multipleconference convening modes (through system convening, moderator convening, or individualdialing-in) for users to easily join conferences.

Progressive Communication, Innovative User ExperienceUser communications assisted by UC soft terminals are progressive, from point-to-point (P2P)instant messaging, P2P voice and video calling, to multi-party conferencing and data sharing.Users can switch between these services on a single terminal, with just several mouse clicks.

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Figure 1-1 Progressive communication

Mobile Multimedia Collaboration, More Engaging CommunicationeSpace UC solution allows users to benefit from video call or multimedia conference serviceswith their smartphones or tablets over mobile data networks or Wi-Fi networks from anywhere,at any time.

Figure 1-2 Mobile P2P video



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Figure 1-3 Mobile conference

NOTE

In the 3G or Wi-Fi environment, the quality of voice calls is subject to the 3G or Wi-Fi network's quality ofservice (QoS) performance. Huawei cannot guarantee the voice quality in such environments.

Adaptive HD Audio

eSpace UC solution employs Opus codec technology of Huawei Media Engine (HME) 2.0 todynamically adjust the transmission scheme and intelligently select low-bandwidth or high-bandwidth video codec according to the network quality. This approach ensures best possiblevideo experience in corresponding network environments.

Figure 1-4 Intelligent voice codec



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ECS on Demand

eSpace UC solution provides IP telephony (IPT) basic services and enhanced communicationsuite (ECS) value-added services. Enterprises can determine whether to purchase ECS value-added services based on their needs. If an enterprise has deployed IPT basic services and nowrequires ECS value-added services, the enterprise can deploy ECS value-added services on theexisting network for smooth capacity expansion, which also protects their investments.

ECS value-added services mainly include instant message (IM), presence, directory, group, andmobile application.

High Reliability

eSpace UC solution uses a variety of reliability measures to ensure consistent, effective UCservice operations.

l Redundancy of key device components: provides redundancy of control boards and powermodules on unified gateway, improving reliability of a single device.

l Two-node cluster/Clustering deployment: improves device reliability on a single node.

l Remote disaster recovery of unified gateways: improves device reliability geographically.

l Local regeneration: ensures local calls when branches disconnect from the central network.

l Network-outage local switching: ensures uninterrupted call services of users under aneSpace IAD when the eSpace IAD disconnects from the unified gateway.

l Power-off survival: ensures the availability of some outgoing calls when a single eSpaceIAD or eSpace U1911/U1960/U1980/U1981 encounters a power outage.

l Load balancing of media resources for multimedia conferences: ensures more appropriateusage of media resources on network-wide devices, improves device performance, andreduces call failures.

For more information, see 5 Reliability.

End-to-End Security

eSpace UC solution provides enterprise users with end-to-end (E2E) security mechanisms forUC services in the following four aspects:

l Terminal access

l Communication service

l Management plane

l IP network

For more information, see 6 Security.

Open Architecturel Connection to carrier networks: eSpace UC solution supports major signaling types

(including Signaling System No. 7 (SS7), primary rate adaptation (PRA), R2, basic rateinterface (BRI), and QSIG) and SIP for flexible networking.



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l Connection to third-party systems: eSpace UC solution can connect to a third-party system(such as Cisco, Avaya, Microsoft Lync, Microsoft Outlook, or Microsoft Active Directorysystem).

l Connection to conventional PBXs: eSpace UC solution can connect to a conventional PBXfor smooth evolution from TDM voice to IP voice.

For more information, see 7 Openness.



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2 Architecture

2.1 OvervieweSpace UC solution uses a hierarchical system architecture that features high convergence,security, and openness.

eSpace UC solution consists of five layers: terminal and access, call management, serviceapplication, management and maintenance, and security protection, as shown in Figure 2-1.eSpace UC solution provides the capabilities of connection to third parties and allows forsecondary development through its open platform and interfaces. It ensures a secure and reliableenvironment for enterprise users to work efficiently and collaboratively.

Figure 2-1 Architecture of eSpace UC solution

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2.2 Terminal and Access LayereSpace UC solution delivers consistent user experience from anywhere, at any time, on multipledevices including IP phones, analog phones, fax machines, PCs, smartphones, and tablets.

IP Phone

An IP phone is a multimedia terminal that connects to an IP network through SIP.

eSpace UC solution supports the following IP phone models:

l eSpace 6805

l eSpace 7800 series (eSpace 7810, 7820, 7830, and 7850)

l eSpace 7900 series (eSpace 7910 and 7950)

l eSpace 8850

Figure 2-2 shows the appearances of these IP phone models.

Figure 2-2 IP phones

IP phones provide diverse easy-to-use functions and high-quality voice call services, includingspeed dial, call transfer, automatic callback, multi-party call, corporate directory, and voicemail.



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You can consult the product documentation of these IP phone models for more information. Toobtain the documents, visit http://support.huawei.com/enterprise/ and choose ProductSupport > Unified Communications and Collaboration > Unified Communications >Unified Communications Endpoints.

Analog Phone and eSpace IADAn analog phone is a traditional desktop phone that converts vibrations into electrical frequencysignals for transmission. It can connect to the system through a subscriber board on eSpaceU1911/U1960/U1980/U1981 or through an eSpace IAD.

An eSpace IAD is a voice over IP (VoIP) and fax over IP (FoIP) media access gateway. Itconnects analog phones or fax machines to an IP network for providing efficient and qualityvoice or fax services.

eSpace UC solution supports different eSpace IAD models (see the following table for detailedinformation) to meet requirements of different user capacities.

Table 2-1 eSpace IAD

Model Description

eSpace IAD102H A 2-port IAD, supporting 2 analog phones or fax machines.

eSpace IAD104H A 4-port IAD, supporting 4 analog phones or fax machines.

eSpace IAD208E(M) An 8-port IAD, supporting 8 analog phones or fax machines.

eSpace IAD132E(T) A 32-port IAD.eSpace IAD132E(T) has two fixed slots for ASI and OSU boards.Each ASI board supports 16 analog phones or fax machines, andeach OSU board supports 8 analog phones or fax machines and 8analog trunks.

eSpace IAD196 A 96-port IAD.eSpace IAD196 has three flexible slots for ASI and OSU boards.Each ASI board supports 32 analog phones or fax machines, andeach OSU board supports 12 analog phones or fax machines and12 analog trunks.

eSpace IAD1224 A 224-port IAD, supporting 224 analog phones or fax machines.eSpace IAD1224 has two flexible slots for ASI and OSU boards.Each ASI board supports 32 analog phones or fax machines, andeach OSU board supports 12 analog phones or fax machines and12 analog trunks.

NOTE

Fixed slots have boards installed before factory delivery. For the flexible slots, customers can install boardsthemselves.

You can consult the product documentation of these eSpace IAD models for more information.To obtain the documents, visit http://support.huawei.com/enterprise/ and choose Product



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http://support.huawei.com/enterprise/


Support > Unified Communications and Collaboration > Unified Communications >Unified Communications Gateways > IAD Series.

eSpace SoftConsoleeSpace SoftConsole is a client used by contact center agents. Users can be connected to eSpaceSoftConsole through the enterprise switchboard. eSpace SoftConsole provides a variety offunctions for agents, including call transfer, incoming call queuing, barge, and forced release.Figure 2-3 shows the user interface of eSpace SoftConsole.

Figure 2-3 eSpace SoftConsole user interface

PC, Smartphone, and TabletUsers can enjoy diverse services provided by UC soft terminals (eSpace Desktop for PCs, eSpaceMobile for smartphones, and eSpace Mobile HD for tablets) anytime anywhere. The servicesinclude IM, voice and video calling, and conferencing. The following figures show the userinterfaces of UC soft terminals.



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Figure 2-4 eSpace Desktop



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Figure 2-5 eSpace Mobile

Figure 2-6 eSpace Mobile HD



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You can consult the product documentation of UC soft terminals for more information. To obtainthe documents, visit http://support.huawei.com/enterprise/ and choose Product Support >Unified Communications and Collaboration > Unified Communications > UnifiedCommunications Endpoints.

2.3 Call Management LayerThe call management layer provides user registration, call routing, call control, and mediacontrol functions. A unified gateway is deployed at the call management layer to achieve thesefunctions.

eSpace U1911/U1960/U1980/U1981 uses a highly-integrated SIP softswitch as its core andsupports both narrowband and broadband services. Terminals are connected to eSpace U1911/U1960/U1980/U1981 in different ways:

l Local analog phones: directly connectedl Analog phones: connected through the eSpace IAD over the IP networkl IP phones and UC soft terminals: connected over the IP network

As a core component of the solution, the unified gateway provides the following functions:

l P2P audio and video calling, conference calling, and diverse supplementary telephonyservices

l Active/standby redundancy, remote disaster recovery, and local regeneration (active/standby redundancy and remote disaster recovery are alternative)

l Connection to the Public Switched Telephone Network (PSTN) or PBXs in a privatenetwork through digital, analog, or SIP trunks

Table 2-2 describes the specification differences among the unified gateways.

Table 2-2 eSpace U1911/U1960/U1980/U1981 specifications

Specification Item eSpaceU1911

eSpaceU1960

eSpaceU1980

eSpaceU1981

User capacity Applies tosmall andmidsizeenterprises orbranch officesof largeenterprises(user capacity< 100).

Applies tosmall andmidsizeenterprises orbranchoffices oflargeenterprises(user capacity< 1000).

Applies tomidsize andlargeenterprises(user capacity< 10,000).

Applies tomidsize andlargeenterprises(user capacity< 10,000).



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Specification Item eSpaceU1911

eSpaceU1960

eSpaceU1980

eSpaceU1981

Supports ASI boardsfor directly connectingto analog phones.

√ √ ×

Analog phoneusers canconnect toeSpace U1980through theaccessgateway thatfunctions asthe proxy foruserregistration.

√

Supports OSU boardsfor connecting toanalog phones (throughFXS ports) and analogtrunks (through FXOports).

√ √ × √

Supports BRI trunkports.

√ √ × √

Provides a built-inVMS for the voicemailbox service.

√ √ × √

Height (1 U = 44.45mm)

1 U 2 U 6 U 2 U

You can consult the product documentation of the unified gateway for more information. Login to http://support.huawei.com/enterprise/, choose Product Support > UnifiedCommunications and Collaboration > Unified Communications > UnifiedCommunications Gateways > eSpace U19xx , and download the required documentation.

2.4 Service Application LayerThe service application layer provides a variety of services, including the console, unifiedmessaging, voice mailbox, voice conferencing, multimedia conferencing, IM, presence,directory, call detail record (CDR), and recording services.

Components at the application layer of eSpace UC solution can be classified into two types: IPTbasic service components and ECS components. Table 2-3 describes the major functions ofthese components.



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Table 2-3 Components at the service application layer

Component Description

IPT Basic service components

eSpaceConsoleServer

l Works with eSpace SoftConsole and eSpace U1911/U1960/U1980/U1981 to comprise the console system. An eSpace ConsoleServercan connect to a maximum of eight eSpace U1911/U1960/U1980/U1981s. It supports two devices working in active/standby mode.

l Can be deployed on the same host as eSpace SoftConsole.l Stores contact center agent information and authenticates agents

when they log in from eSpace SoftConsole.l Queues incoming calls, maintains such queues, and updates queue

information to each SoftConsole.

Unified MessageSystem (UMS)

Uniformly stores and manages messages from different sources, andprovides voice mailbox and fax mailbox services.eSpace UC solution supports two types of UMS: eSpace UMSV200R002 (Huawei) and Movius Cafe 3.3 (Movius).For more information about the UMS, see the Product Descriptionreleased with the UMS product. To obtain eSpace UMS documentation,visit http://support.huawei.com/enterprise and choose Product >Unified Communication and Collaboration > UnifiedCommunication > Unified Communications Applications > eSpaceUMS.

Built-in servicemodules of eSpaceU1911/U1960/U1980/U1981

Built-in VMS module of eSpace U1911/U1960/U1981: provides voicemailbox services, allowing users to leave messages. The VMS and UMShave overlapping services. Customers can deploy either the VMS orUSM based on their voice mailbox service requirements.Built-in audio conference bridge of eSpace U1911/U1960/U1980/U1981: provides voice conferencing services, allowing users toschedule conferences and hold instant conferences.

CDRServer Periodically reads CDR files from the CDR pool of a unified gatewayand stores them in a specific location. The Business Management Unit(BMU) or a third-party billing system can obtain these CDR files fromthe CDRServer through an FTP or FTPS interface.

eSpace AudioRecorder

Provides voice recording functions. Two recording modes are available:automatic and manual.For more information about the eSpace Audio Recorder, see the ProductDescription released with the eSpace Audio Recorder. To obtain eSpaceAudio Recorder documentation, visit http://support.huawei.com/enterprise and choose Product > Unified Communication andCollaboration > Unified Communication > UnifiedCommunications Applications > eSpace Audio Recorder.

AppAgent Provides the corporate directory capabilities and also an open ECSinterface for third-party integration or secondary development.



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http://support.huawei.com/enterprise




ECS components

eServer Provides functions such as UC soft terminal registration authentication,IM, presence, group, and directory.

MAA Allows eSpace Mobile and eSpace Mobile HD to access the network.

Meeting MediaServer (MS)

Provides multimedia conference functions, allowing users to hold videoconferences and share data.

2.5 Management and Maintenance LayerThe management and maintenance layer provides service and system management functions.eSpace UC solution uses eSight, BMU, and Local Maintenance Terminal (LMT) as themanagement and maintenance platform for enterprises.

Table 2-4 describes the components at the management and maintenance layer.

Table 2-4 Components at the management and maintenance layer


BMU Provides basic service management capabilities, including numbermanagement, service activation, data synchronization, and call recordquery.

eSight Provides device management capabilities, including topologymanagement, alarm management, performance management,configuration management, security management, and unified upgrade.The following network elements (NEs) can be connected to eSight:unified gateways, eSpace IADs, SBCs, IP phones, servers, routers,switches, and firewalls.

LMT Provides the following functions for eSpace U1911/U1960/U1980/U1981: configuration management, alarm management, monitoringmanagement, signaling tracing, one-click fault data collection, patchmanagement, upgrade, and log collection.

2.6 Security Protection LayerThe security protection layer provides end-to-end security protection mechanisms for eSpaceUC solution.

eSpace UC solution provides comprehensive security mechanisms to ensure system securityfrom four aspects: terminal access, service communication, network layer, and managementlayer. The security mechanisms include user registration authentication, TLS/SRTP-based voiceencryption, HTTPS-based web access encryption, and service rights control.



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3 Typical Network

3.1 Single-Node NetworkA single-node network is suitable for an enterprise with no more than 10,000 users that does nothave branches or has branches that do not require local regeneration. In such a network, theunified gateway and a variety of service servers are all deployed at the enterprise's equipmentroom, and all terminal users register with the unified gateway. If the enterprise has small-sizedbranches, eSpace IADs can be deployed at branches and function as proxies for user registrationto the unified gateway, or IP phones can be deployed at branches and register with the unifiedgateway.

Network SchemeFigure 3-1 shows a typical single-node network scheme.

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Figure 3-1 Single-node network

Networking Descriptionl The unified gateway and a variety of service servers are deployed at the headquarters.

l SIP terminals (including IP phones and SoftConsoles) register with the unified gateway.Analog phones and fax machines can directly connect to eSpace U1911/U1960/U1980/U1981 through the ASI board thereon. They can also connect to eSpace IADs, and registerwith the unified gateway as SIP users through the connected eSpace IADs that function asproxies for user registration.

l The unified gateway can connect to the PSTN through trunks such as PRA, SS7, QSIG,R2, BRI, and AT0.

NOTE

eSpace U1980 does not support BRI and AT0 trunks.

l Service servers, such as the UMS (for the unified messaging service), CDRServer (for theCDR service), ConsoleServer (for the console service), and Audio Recorder (for therecording service), can be deployed based on service requirements.

l The ECS software can be deployed to obtain ECS value-added services such as IM, group,and multimedia conferencing. UC soft terminals send registration and authenticationrequests to the eServer for registration and authentication.



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l The built-in VMS of the unified gateway and the UMS have overlapping services.Customers can deploy either the VMS or USM based on their voice mailbox servicerequirements.

l eSight centrally manages eSpace U1911/U1960/U1980/U1981, eSpace IAD and IP Phone.

3.2 Multi-Node NetworkIn a multi-node network, eSpace U1911/U1960/U1980/U1981s are deployed at enterprisebranches for local regeneration and local outgoing call services. Three types of multi-nodenetworks are supported: centralized call management network, distributed call managementnetwork (peer-to-peer mode), and distributed call management network (convergent mode).

3.2.1 Centralized Call Management NetworkA centralized call management network can be used for an enterprise with no more than 10,000users that has branches that require local regeneration. In such a network, the unified gatewayfunctioning as the central node and a variety of service servers are all deployed at an enterprise'sequipment room, and all terminal users register with the central node in normal conditions.Unified gateways functioning as branch nodes are deployed at the branches for local outgoingcalls and local regeneration.

Network SchemeFigure 3-2 illustrates a typical centralized call management network.



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Figure 3-2 Centralized call management network

Networking Descriptionl The unified gateway at the headquarters is the central node, which can be eSpace U1911,

U1960, U1980, or U1981. The central node supports two unified gateways working inactive/standby mode, known as the active node and standby node.

l The unified gateway at a branch is the branch node, which can be eSpace U1911, U1960,U1980, or U1981.

l The central node and branch nodes all connect to the PSTN using trunks such as PRA, SS7,QSIG, R2, BRI, and AT0. Two connection modes are available:

NOTE


– A trunk gateway is deployed at the headquarters for connecting to the PSTN and routescall to the PSTN using trunks. The trunk gateway connects to the central node usingSIP trunks.

– A trunk gateway is not deployed at the headquarters, but the central node directlyconnects to the PSTN. If two unified gateways working in active/standby mode are



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deployed as the central node, the active node and standby node each connect to thePSTN using trunks.

l The central node and branch nodes are connected using SIP trunks. They also use a heartbeatmechanism to constantly check each other's status.

l When the central node is correctly connected to the branch nodes,

– All users at the headquarters and branches register with the central node.

– Services are uniformly configured and managed on the central node, and the centralnode synchronizes data to branch nodes in real time.

– All calls are processed by the central node. When a branch user places an outgoingPSTN call, the central node analyzes the call and routes the call to the local branch node,which then routes the call outside of the enterprise.

l When the central node is faulty or disconnects from a branch node, users at the branchregister with the branch node, and the branch node processes service requests from usersat the branch. This is known as local regeneration.

– Basic call functions for analog users at the branch node are not affected.

– IP phones at the branch fail to register with the central node, and then automaticallyswitch to the branch node for registration. Basic call functions for SIP users are notaffected.

l The BMU, eSight, and other related service servers are deployed at the headquarters forcentrally processing services.


l The ECS software can be deployed to obtain ECS value-added services such as IM, group,and multimedia conferencing. UC soft terminals send registration and authenticationrequests to the eServer for registration and authentication.

l It is recommended that enterprises deploy firewalls at their network ingress, network egress,and user access points, and configure access control policies according to theCommunication Matrix.

3.2.2 Distributed Call Management Network (Peer-to-Peer Mode)A distributed call management network in peer-to-peer mode can be used for enterprises with10,000-30,000 users. In such a network, two or three nodes each deploy a unified gateway, whichprovides call services for the corresponding node. Different nodes are connected using SIPtrunks, through which inter-node calls are routed.

Network SchemeFigure 3-3 illustrates a typical distributed call management network in peer-to-peer mode.



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Figure 3-3 Distributed call management network (peer-to-peer mode)

Networking Descriptionl Each node has a unified gateway deployed. The unified gateway at a node is a voice

gateway, which is responsible for user registration, intra-office users, and local PSTN callsat that node. Different nodes are connected using SIP trunks, through which inter-node callsare routed. The unified gateways can be eSpace U1911, U1960, U1980, or U1981.

l IP phones, SoftConsole users (SIP users), UC soft terminal users (SIP users), and eSpaceIADs (on behalf of analog phones and fax machines) at a node register with the unifiedgateway at the node.

l The unified gateways at different nodes can connect to the PSTN using trunks such as PRA,SS7, QSIG, R2, BRI, and AT0 for local outgoing calls.

NOTE





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l The ECS software can be deployed to obtain ECS value-added services such as IM, group,and multimedia conferencing. UC soft terminals at different nodes send registration andauthentication requests to the eServer at the headquarters for registration andauthentication.

3.2.3 Distributed Call Management Network (Convergent Mode)Enterprises with more than 30,000 users can use a distributed call management network wherefour or more unified gateways are convergent.

Network Scheme

Figure 3-4 illustrates a typical distributed call management network in convergent mode.

Figure 3-4 Distributed call management network (convergent mode)

Networking Descriptionl Each node has a unified gateway deployed. The unified gateway at a node is a voice

gateway, which is responsible for user registration, intra-office users, and local PSTN callsat that node. A voice gateway can be eSpace U1911, U1960, U1980, or U1981.

l IP phones, SoftConsole users (SIP users), UC soft terminal users (SIP users), and eSpaceIADs (on behalf of analog phones and fax machines) at a node register with the voicegateway at the node.

l The voice gateways at different nodes can connect to the PSTN using trunks such as PRA,SS7, QSIG, R2, BRI, and AT0 for local outgoing calls.



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NOTE


l The convergence gateways route inter-node calls. Different convergence gateways areconnected using SIP trunks, and each convergence gateway connects to different voicegateways also using SIP trunks. A convergence gateway can be eSpace U1980 or U1981.

l Multiple convergence gateways can be deployed in active-standby or load balancing mode.



l The ECS software can be deployed to obtain ECS value-added services such as IM, group,and multimedia conferencing. UC soft terminals at different nodes send registration andauthentication requests to the eServer at the headquarters for registration andauthentication.

3.3 Service Server DeploymentThe user capacity and reliability requirements decide how the service servers are deployed. Inthe IPT basic service scenario, the eServer, MAA server, and Meeting MS are not required.

Server Hardware Requirements

l RH2285 (2*E5-2407 CPU, 4*8 GB memory, 4*300 GB SAS disk, 6*GE)

l Customers can prepare the server (Huawei, IBM, or HP server) themselves. The serverspecifications must be equal to or greater than those of RH2285.

Basic Software Requirements

For Windows

l Operating system: Windows Server 2008 R2 Standard, 64-bit

l Database: SQL Server 2008 R2 Standard, 64-bit

For Linux

l Operating system: SUSE Linux Enterprise Server v11.0 SP1 64-bit

l Database: Oracle 11g R2 Standard, 64-bit

l Two-node cluster software: VCS 5.1 SP1

Server Deployment Scheme

Under different user capacity requirement, the servers have different deployment scheme. Fordetails, see Networking Configuration1 page in Huawei eSpace Unified CommunicationsSolution V200R002C00 Specification List.



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4 Features

4.1 Voice Service ListeSpace UC solution provides a variety of voice services for enterprise users to use.

Service DescriptionTable 4-1 describes the voice services supported by eSpace UC solution.

Table 4-1 Service description

Service Description

Intra-officecalling

Users in an enterprise can call each other using diverse terminals supportedby eSpace UC solution.

PSTN inter-office calling

eSpace UC solution uses trunks, such as PRA, SS7, QSIG, R2, BRI, and AT0trunks, to connect to the PSTN.Therefore, users in an enterprise can call local numbers and national tollnumbers based on their call rights.

IP inter-officecalling

eSpace UC solution uses SIP trunks to connect to other IP PBXs or softswitchsystems.

P2P videocalling

Users in an enterprise can make P2P video calls to users both inside andoutside of the enterprise.

Call rightscontrol

eSpace UC solution provides four basic call rights: intra-office calls, localcalls, national toll calls, and international toll calls. Additionally, eSpace UCsolution allows for customization of call rights to implement restrictions.

Numberanalysis andprocessing

eSpace UC solution can analyze calling and called numbers based on thenumber prefix and length. In response to analysis results, eSpace UCsolution connects or forbids calls accordingly.

Huawei eSpace Unified Communications SolutionOverview 4 Features


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Service Description

Fax eSpace UC solution supports the following fax services:l T.30 faxl T.38 faxl G.711 transparently-transmitted fax

Local numberquery

A user can dial a preset special prefix to query the number of the phone inuse or the One Number Link You (ONLY) number of that phone.

Calling lineidentificationpresentation(CLIP)

The calling number is displayed on the phone of the called party who hassubscribed to the CLIP service.

Calling lineidentificationrestriction(CLIR)

The calling number is not displayed on the phone of the called party whenthe calling party has subscribed to the CLIR service.

Calling lineidentificationrestrictionoverride(CLIRO)

The calling number is still displayed on the phone of the called party whohas subscribed to the CLIRO service even if the calling party has subscribedto the CLIR service.

Calling nameidentificationpresentation(CNIP)

A user (A) has subscribed to the CNIP service. When another user (B) callsA, A's phone displays B's name if B's name is saved in the enterprise directoryor A's local address book.A's phone must support the CNIP service.

Calling/Connectednameidentificationrestriction(CNIR)

The name of a user (either as a calling party or called party) who hassubscribed to the CNIR service is not displayed on the peer party's phone.

Callforwardingconditional(CFC)

Calls meeting specified conditions are forwarded to preset numbers.Forwarding conditions include the calling number, time segment, and calleduser's status.

Callforwardingunconditional(CFU)

If a user has subscribed to the CFU service, all incoming calls areautomatically forwarded to a preset phone number regardless of the userstatus.

Callforwardingon no reply(CFNR)

If a user has subscribed to the CFNR service, incoming calls are forwardedto a preset phone number if the user does not answer the call within the presetperiod (configurable, with the value ranging from 5s to 50s; default: 20s).



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Service Description

Callforwardingon busy(CFB)

If a user has subscribed to the CFB service, incoming calls are automaticallyforwarded to a preset phone number when the user is busy.

Callforwardingoffline (CFO)

If a user has subscribed to the CFO service, incoming calls are automaticallyforwarded to a preset phone number when the user is offline.

Call transfer A user can transfer an ongoing call to a third party by pressing the hookflashbutton or transfer button. Three call transfer modes are available: blindtransfer, semi-consult transfer, and consult transfer.l Blind transfer: A user dials a third-party number and exits.l Semi-consult transfer: A user dials a third-party number and exits when

hearing the ringback tone.l Consult transfer: A user dials a third-party number and exits when the

third party answers the call.

Call hold This service allows a user to hold an ongoing call and resume it later.

Call park A user can hold a call on one phone and resume the call on another phonewithin the office. If the user does not resume the call within 5 minutes, thecall is released and the party on hold hears a busy tone.

Call waiting A user who is engaged in an ongoing call hears the prompt tone of a new callwhen a third party calls the user. If the user's terminal is an IP phone or UCsoft terminal, a new incoming call notification is also displayed.

Three-waycalling

The calling or called party in a two-party conversation can call a third partyto start a three-party conversation or talk to the other two parties separatelywithout ending the current conversation.

Outgoing callbarring(OCB)

If the OCB service is configured to restrict certain outgoing calls (forexample, toll calls) on a phone, users can place these outgoing calls only byperforming required dialing operations.

Passwordchange

Users can change their service passwords. The service password is used inOCB, password-based call barring, ONLY, and all-service deactivation.

Registeredcall on busy(RCB)

This service enables a user who makes a call when the called party is busyto register the call. If the user does not perform any operations within 5s thenext time the user picks up the phone, a call is automatically made to thecalled user.The RCB service takes effect within 20 minutes since activation. After thetime expires, the service is automatically canceled. The system supports amaximum of 1024 RCB service records.NOTE

This service applies only to analog phone users under the same unified gateway.



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Service Description

Callback onbusy (CBB)

If a user makes a call and the called party is busy, the user can activate theCBB service. When detecting that the called party is idle, the systemautomatically makes a call to the calling party. When the calling party picksup the phone, the system calls the called party for a call setup.

Callback onno reply(CBNR)

If a user makes a call and the called party does not answer the call, the usercan activate the CBNR service. When detecting that the called party has beenengaged in any calls, the system automatically makes a call to the callingparty. When the calling party picks up the phone, the system makes a call tothe called party for a call setup.

Group pickup This service allows a user to answer incoming calls for the other users in thesame pickup group.

Designatedpickup

This service allows a user to answer the calls for another user in the samepickup group by dialing the pickup access code and called number.

Advancedsecretaryservice

This service allows a secretary and a manager to share a phone line. When auser dials the manager's phone number, the secretary's phone rings and thesecretary can decide whether to forward the call to the manager. The secretaryand the manager can learn about each other's phone status according to thestatus indicators on their own phones.For more information, see 4.2 Advanced Secretary Service.

Delay hotline If a user does not dial a number within 5s upon off-hook, a call isautomatically placed to a preset number (hotline number).NOTE

For IP terminals (for example, IP phones), this service is available only if theseterminals support it.

Instanthotline

Once a user who has subscribed to the instant hotline service picks up thephone, a call is automatically placed to a preset number (hotline number).NOTE

For IP terminals (for example, IP phones), this service is available only if theseterminals support it.

Barge This service allows a contact center agent to barge into a call between twoenterprises users or between an enterprise user and an external user, and starta three-way call.NOTE

When the agent barges in, the system plays an announcement to the two parties, tellingthem that the agent barges in.

Forcedrelease

This service allows a contact center agent to forcibly disconnect the ongoingcall of a user if there is a toll call to the user or due to other reasons.

Privilegeduser

This service allows a privileged user to call and talk with a user who is havinga conversation with other users.

Simultaneousringing

When a user with simultaneous ringing configured is called, the user's phoneand other specified phones ring simultaneously.



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Service Description

Sequentialringing

When a user with sequential ringing configured is called and does not answerthe call within the preset period (configurable, with the value ranging from5s to 50s; default: 20s), the user's phone stops ringing and other specifiedphones ring in sequence.

Distinctivering tone

This service enables a user to learn the calling party type based on differentring tones.

Do not disturb(DND)

This service blocks all incoming calls for a user. If the DND service is enabledfor a user, others who call this user hear the DND announcement, and no callis put through to the user. With this service enabled, the user cannot receiveany calls but can still place calls.

Absent user This service enables calling parties to hear an absence announcement. Theabsent user service can be used when a user is unable to answer calls.

Alarm clock A phone that has subscribed to the alarm clock service can ring automaticallyat the preset time to remind the phone user.

Multi-numberservice

A user is assigned multiple numbers, including one primary number and oneor more secondary numbers. Others can reach this user by dialing anynumbers configured for this user.A primary number can correspond to a maximum of 10 secondary numbers.

Abbreviateddialing

This service allows a user to dial a one- or two-digit abbreviated code insteadof a complete called number to connect to the called party.Abbreviated dialing is a user-level service. A user is allowed to register amaximum of eight 1-digit abbreviated codes and thirty 2-digit abbreviatedcodes.

ONLY This service enables multiple terminals of a single user to display the ONLYnumber to the calling or called party and to share supplementary services.An ONLY number can be bound to a maximum of eight intra-office numbersor PSTN numbers. When the ONLY number is called, the terminalscorresponding to the bound numbers ring in the specified ringing mode(sequential or simultaneous ringing).

Audio paging A user in a paging group can dial the group access code to broadcastinformation to the other users within the group.For more information, see 4.3 Audio Paging.

Hunt group After a user dials the access code of a hunt group, the system calls users inthe hunt group, and the phones in the hunt group ring in the specified ringingmode (simultaneous ringing or sequential ringing).For more information, see 4.4 Hunt Group.



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Service Description

Group call An administrator can create a call group and add multiple users to this group.Users in the call group all have the hotline service enabled, and they cannotcall each other.After a user in the call group picks up the phone, the phone automaticallycalls a preset outer-group user who is a contact center agent.When a user outside of a call group dials the access code of this call group,phones of all users in the group ring simultaneously. A call is set up when auser in the group answers the phone. The other phones in the call groupcontinue to ring, and these users can pick up phones to join the call.The system supports a maximum of 256 call groups, each of which supportsa maximum of 10 users.

Busy lampfield (BLF)

A user with the BLF service configured can view the phone status of othersthrough indicators of the programmable buttons on the user's IP phone. Thephone status can be idle, ringing, call in-progress, and offline.A maximum of 32 users can subscribe to the status display of the same user.The system supports a maximum of 2048 records for users whose status willbe displayed on the phones of the users who have subscribed to the BLFservice.

Remoteactivation

A user can dial a specified prefix on a local phone to activate or deactivateforwarding or advanced secretary services of other phones as prompted.

Deactivationof all services

This service allows a user to deactivate all the activated supplementarytelephony services on the phone. The user's service rights are not affected.

4.2 Advanced Secretary ServiceThis topic describes the functions and application scenarios of the advanced secretary service.

Function Description

After the advanced secretary service is enabled for a manager and a secretary, the manager'sphone and the secretary's phone have one shared line. The secretary answers all calls for themanager and transfers important calls to the manager. This allows the manager to screenunwanted calls and avoid missed calls.

When a call comes in, the manager and the secretary see the same incoming call informationand the shared line status (busy or idle) on their phones. The manager can directly answerincoming calls, without call transfer by the secretary.

A private line is available between the manager and the secretary. The manager or secretary canpress the corresponding line button to talk with each other over the private line.

Managers and secretaries are many-to-many mapped. A secretary can service a maximum of sixmanagers, and a manager can obtain services from a maximum of six secretaries.



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Application Scenario 1: Secretaries Answer Calls for Managers

When a call comes in, both the manager and secretary can see call information on their phones.The secretary answers the call for the manager. After deciding that the call must be forwardedto the manager, the secretary places the call on hold and asks the manager over the private linewhether he or she wants to answer the call. When agreeing to answer the call, the manager canpress appropriate function button on the phone and talk with the calling party. At that moment,the system automatically disconnects the secretary from the ongoing call.

Application Scenario 2: Managers Directly Answer Calls

When a call comes in, the manager sees that the call is from a VIP and therefore directly answersthe call, without the call being transferred by the secretary. By reading the shared line status, thesecretary understands that the manager has answered the call and therefore ignores the call.

4.3 Audio PagingThis topic describes the functions and application scenarios of the audio paging service.

Function

After a paging group is configured, a paging sender in the paging group can use an IP phone todial the group access code and broadcast information to the paging receivers within the group.Whether a user outside of the paging group can dial the group access code for informationbroadcast is configurable. By default, such a user does not have the rights to do so.

NOTE

Currently, only eSpace 7900 series IP phones support audio paging.

Audio paging can be used at the same time with the call service. That is, a user receivingbroadcast information is still able to place or answer calls, and a user answering a call is alsostill able to receive broadcast information.

Audio paging can be bound to the emergency call service. Then, when a user in a paging groupplaces an emergency call, the system automatically broadcasts this call within the group.

Each paging group supports one broadcast channel at a time. If a user in a paging group isbroadcasting, the other users in that group cannot broadcast.

Table 4-2 Specifications

Item eSpace U1911 eSpace U1960 eSpace U1980 eSpace U1981

Maximum numberof paging groups tobe created

20 120 320 120

Maximum numberof users per paginggroup

60 60 120 60



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Application Scenario 1: Broadcasting in Idle StateMultiple users belong to a paging group. A paging sender (A) in the group dials the group accesscode, and the paging receivers' phones automatically go off-hook in speaker mode. When A isspeaking, the speakers of the paging receivers' phones play audio. The communication is one-way, which means that the paging receivers can listen only. During the broadcast, a user (notthe calling party) can press the Speaker button to stop receiving the broadcast. After thebroadcast, A hangs up. Then, all the others phones automatically go on-hook.

Application Scenario 2: Users in Ongoing Calls Listening to the BroadcastMultiple users belong to a paging group. Two users (B and C) are engaged in an ongoing call.At this time, another user (A) dials the group access code to broadcast information. The pagingreceivers' phones automatically go off-hook and play the broadcast in speaker mode, with noexception of B's and C's phones. In addition, the ongoing call between B and C is not interrupted.B or C can press the Speaker button to stop receiving the broadcast.

Application Scenario 3: User Listening to the Broadcast Placing a New CallMultiple users belong to a paging group. A paging sender (A) in the group dials the group accesscode, and the paging receivers' phones automatically go off-hook and play the broadcast inspeaker mode. At this time, a paging receiver (B) can still call others (for example, C). When Canswers the call, B and C can talk with each other. They can still listen to the broadcast. Thecall between B and C is not sent to the other users in the group.

4.4 Hunt GroupThis topic describes the functions and application scenarios of the hunt group service.

FunctionIn an enterprise, employees in the same field can be added to a hunt group, with the group accesscode configured. When a user dials the group access code, the phones of the sign-in groupmembers ring simultaneously, cyclically, or sequentially according to the configured routingpolicy. The hunt group service enables employees in the same field to work together for moreefficient request processing.

A user can be added to multiple hunt groups to handle different service requirements.

When a call is connected to a hunt group through the hunt group access code, personal services(such as call forwarding and DND) for the hunt group members, if enabled, will be unavailable.

Table 4-3 Specifications

Item eSpace U1911 eSpace U1960 eSpace U1980/U1981

Maximum number of huntgroups to be created

32 252 252

Maximum number ofusers per hunt group

32 32 32



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Item eSpace U1911 eSpace U1960 eSpace U1980/U1981

Maximum number ofusers

64 512 1024

Application Scenario

In an enterprise, employees in a department (for example, IT support department) have beenadded to a hunt group with a unified access code, and simultaneous ringing has been configuredfor the hunt group. During the office hours, all group members sign in to the hunt group. Whena user dials the access code of this hunt group, the phones of all employees in this hunt groupring at the same time. After an employee answers the call, the phones of the other employeesstop ringing.

If sequential ringing is configured, the phone of the desired employee (whose phone is expectedto ring first according to the configured routing policy) rings first. If the desired employee cannotanswer the call, the call is diverted to the next expected number.

When no employee in the hunt group answers the call, the call is forwarded to the forward-tonumber configured for the hunt group access code. For example, the hunt group has configuredcall transfer to the voice mailbox upon ringing timeout. During the break, if a user dials the huntgroup access code, no one answers the call. When ringing times out, the system asks the user toleave a message. After the user leaves a message, the MWIs on the phones of all members inthe hunt group are lit up. When the group members go back to work and find that the MWI ison, a member presses the corresponding button on the phone, enters the password, and listensto the message. Then, the MWIs on the other phones are turned off.

4.5 Automatic SwitchboardThis topic describes the functions and application scenarios of the automatic switchboardservice.


The automatic switchboard service is also known as the interactive voice response (IVR) service.After a number is set as the automatic switchboard number and the automatic switchboard serviceis enabled in an enterprise, all incoming calls are automatically forwarded to the automaticswitchboard. The switchboard then plays announcements, prompting the calling party to performoperations accordingly. By default, the automatic switchboard prompts the calling party to dialan extension number.

Enterprise administrators can customize switchboard announcements and multi-level IVRannouncements and configure the system to play varied announcements at different time periodsof a day. The time periods can be configured by year, month, date, week, start time, end time,and holiday.

The system supports a maximum of 256 automatic switchboards and a maximum of three levelsof IVR.



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Application Scenario 1

An external user dials the switchboard number and presses function buttons on the phone asprompted to perform operations, such as hearing enterprise greetings, dialing extension numbers,and transferring to a contact center agent.

Application Scenario 2

An enterprise records a new enterprise greeting, saves the recording in .pcm format, and loadsthe recording to the unified gateway. After the recording is loaded successfully, an external usercan hear the new enterprise greeting when dialing the enterprise switchboard number.

4.6 Voice ConferencingThis topic describes the functions and application scenarios of the voice conferencing service.


A voice conference is a call session made among three or more users. Depending on theconference convening mode, voice conferences can be classified into scheduled conferences andinstant conferences.

Table 4-4 describes the two types of voice conferences.

Table 4-4 Voice conference details

VoiceConferenceType

Description

ScheduledConference

A convener schedules a conference beforehand using a web-based self-service system. If the web-based self-service system is unavailable, theconvener asks the enterprise administrator to schedule a conference.When the conference time arrives, participants can join the conference inany of the following three ways:l Individual dial-in

Participants dial the conference access code and enter the conferenceID and password as prompted to join the conference.

l Moderator conveningThe moderator joins a conference and performs operations on thephone to invite participants to join.

l System conveningThe system automatically invites participants to the conference.

Instantconference

The moderator does not schedule a conference beforehand. Instead, he orshe directly dials the conference access code on a terminal and then invitesparticipants to join when prompted.



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Table 4-5 Specifications of conference resources

Model

Unified Gateway eSpaceDesktop

eSpaceMobile/eSpaceMobile HD

IP Phone

eSpaceU1911

l A maximum of 20conference sites in thesystem

l A maximum of 60participants in the system

l A maximum of 60participants perconference site

l Scheduledconference:Amaximumof 60participantscan bedisplayed.

l Instantconference:Amaximumof 30participantscan bedisplayed.

A maximum of30 participantscan bedisplayed.

A maximum of20 participantscan bedisplayed.

eSpaceU1960/U1981


l A maximum of 360participants in the system

l A maximum of 20conference sites and 60participants per MTUboard; a maximum of 60participants perconference site





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Model

Unified Gateway eSpaceDesktop

eSpaceMobile/eSpaceMobile HD

IP Phone

eSpaceU1980


l A maximum of 960participants in the system(when eight MRS boardsare configured)

l A maximum of 40conference sites and 120participants per MRSboard; a maximum of 120participants perconference site



Application Scenario 1: Scheduled ConferenceA convener schedules a conference using the web-based self-service system and notifies allparticipants of conference information (including conference time, topics, and parties).

When the conference time arrives, participants join the conference by dialing the conferenceaccess code.

Application Scenario 2: Instant ConferenceThe moderator wants to start an instant conference with others. The moderator directly dials theconference access code on a terminal and invites participants as prompted to the conference.Upon answering the call from the moderator, participants join the instant conference.

The moderator can invite other people to join an ongoing instant conference.

If a participant quits, the ongoing instant conference is not interrupted; however, if the moderatorquits, the instant conference automatically ends.

4.7 ConsoleThis topic describes the functions and application scenarios of the console service.

Function DescriptioneSpace UC solution provides a console system that consists of eSpace SoftConsole,ConsoleServer, and unified gateway. eSpace SoftConsole is an IP-based softphone platformrunning on a PC.



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Table 4-6 describes eSpace SoftConsole functions.

Table 4-6 eSpace SoftConsole functions


Basic call eSpace UC solution considers each eSpace SoftConsole a SIP user. eSpaceSoftConsole has basic call functions, such as placing, answering, andrejecting calls, call hold/resume, barge, forced release, and two-stagedialing.

Showing busyor idle

After an eSpace SoftConsole is added to a SoftConsole group, the contactcenter agent using that eSpace SoftConsole can show busy to reject newincoming calls and later show idle to resume handling incoming calls.

Queuingincoming calls

If all contact center agents in a SoftConsole group are busy, customers whocall that SoftConsole group hear a call waiting tone. Their calls are queuedin chronological order.

Transferringcalls

After a call is connected, a contact center agent can transfer the call toanother agent as requested by the calling party. eSpace SoftConsolesupports the following functions:l Transfers calls.l Holds multiple calls at the same time.l Specifies an agent to answer the call.l Quickly transfers multiple calls at the same time.

Corporatedirectory

Contact center agents can query their enterprise departments andemployees under each department using their eSpace SoftConsoles. Theycan initiate calls to contacts from the corporate directory.

Call record Call records are displayed by category in real time in the eSpaceSoftConsole main window. There are three categories: placed, received,and missed calls. Contact center agents can manage call records, such asdeleting one or all call records.Each call record contains information such as the peer number, start time,and call duration. Contact center agents can click a record to initiate a call.

Incoming callnotification

eSpace Console supports the following incoming call notifications:l Ringingl Automatic display of an incoming call dialog boxl Calling line identification presentation (CLIP)l Announcement playback from the PC loudspeaker

Presence A contact center agent can view the status of the other agents in the sameSoftConsole group, and the administrator can view the status of all agents.A contact center agent can view the status of other terminals that registerwith the same unified gateway as the eSpace SoftConsole that the agentuses.



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Loginauthentication

User names and passwords are authenticated when contact center agentslog in to the system.

Multi-languagesupport

eSpace SoftConsole supports both Chinese and English, but does notsupport language switch on the eSpace SoftConsole graphical userinterface (GUI).

Audio control The following audio control functions are available:l Microphone volume adjustmentl Speaker volume adjustmentl Echo cancelationl Noise controll Audio device selection

Night service Calls will be transferred to a night service number when all agents are busy,offline, or logged out.

A license controls the number of eSpace SoftConsoles that can be used. eSpace U1980 supportsa maximum of 1024 eSpace SoftConsoles, and eSpace U1911, U1960, and U1981 each supporta maximum of 64 eSpace SoftConsoles.


All contact center agents in a SoftConsole group have signed in to that group and are in workstate. A customer dials the SoftConsole group access code, and the call is then routed to thewaiting queue. Afterward, one of the following happens:

l If there is an idle agent, the call is routed to that agent, who then answers it.

l If all agents are busy, either of the following two situations may occur:

– If an agent becomes idle, that agent answers this queued call.

– If an agent finds that the call is from a VIP, that agent preferentially answers this callby placing his or her ongoing call on hold.

4.8 DirectoryThis topic describes the functions of the directory (corporate directory and personal directory)service.

Corporate Directoryl Directory creation and maintenance

An enterprise administrator creates department structures and adds employee informationon the BMU for the enterprise. The employee information includes the employee name,department, mobile and other phone numbers, position, fax number, address, and postalcode.



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The administrator can rearrange sub-departments under a department. After therearrangement, sub-departments are displayed in a rearranged order on UC soft terminals.

The administrator can modify the information about an employee on the BMU when theemployee information is changed.

l Directory search

Enterprise users can search the corporate directory for other users within the enterprise ontheir UC soft terminals. Directory search by multiple keywords is supported.

l Directory access rights control

The administrator can set different user levels (a maximum of 20 user levels) for accessingthe corporate directory. Users at a higher level can view information about others at thesame or a lower level, but users at a lower level cannot view information about others at ahigher level.

For the maximum number of contacts in the corporate directory, see 3.3 Service ServerDeployment.

Personal Directoryl Group management

Enterprise users can create, delete, or rename groups, and add contacts to or delete contactsfrom a group on their terminals (IP phones or UC soft terminals).

l Contact management

Contacts in the personal directory can be divided into two types: customized contacts andenterprise contacts.

– Customized contacts: These contacts are manually created by enterprise users. Others,except the one who creates the contact information, cannot view such information.

– Enterprise contacts: These contacts are those saved in the corporate directory. Enterpriseusers can search them out from the corporate directory and add them to the personaldirectory, but the enterprise users cannot modify the information about such contacts.

l Incremental contact synchronization. eSpace Mobile and eSpace Mobile HD cansynchronize contact information with the server incrementally, which effectively reducesthe traffic compared with full contact synchronization.

l Privacy of personal directories on IP phones. The personal directory of an IP phone is savedon the phone and is not synchronized with those on UC soft terminals.

4.9 Voice MailboxThis topic describes the functions and application scenarios of the voice mailbox service.


eSpace U1911, U1960, and U1981 all have a built-in voice mail system (VMS) module thatprovides the voice mailbox service. Users can leave, retrieve, delete, and play voice messagesas well as customize greetings. If a phone has a message waiting indicator (MWI), the MWIlights up when a voice message is received. The voice mailbox service is classified dependingon the transfer-to-voice-mailbox mode. Table 4-7 describes the types of voice mailbox service.



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Table 4-7 Voice mailbox service types

Service Description

Call transferto voicemailboxunconditional (CTVMU)

A user (A) has subscribed to the CTVMU service. When another user (B)calls A, the call is transferred to the VMS unconditionally. B then leaves amessage as prompted by the VMS.

Call transferto voicemailbox onno reply(CTVMNR)

A user (A) has subscribed to the CTVMNR service. When another user (B)calls A, the call is transferred to the VMS if A does not answer the call withinthe preset period (configurable, with the value ranging from 5s to 50s; default:20s). B then leaves a message as prompted by the VMS.

Call transferto voicemailbox onbusy(CTVMB)

A user (A) has subscribed to the CTVMB service. When another user (B)calls A, the call is transferred to the VMS if A is busy. B then leaves a messageas prompted by the VMS.

Call transferto voicemailboxoffline(CTVMO)

A user (A) has subscribed to the CTVMO service. When another user (B)calls A, the call is transferred to the VMS if A is offline. B then leaves amessage as prompted by the VMS.

Voice message files of the unified gateway are stored in its built-in storage card. Users can dialthe VMS unified access code to retrieve messages from anywhere, at any time, avoiding missedcalls.

Table 4-8 VMS capacity

Item Specification

eSpace U1911 eSpace U1960 eSpace U1981

Maximumnumber of voicemailbox users

100 1000 1200

Maximumnumber of voicemessages peruser

50 50 50

Maximumduration (unit:second) of avoice message

300 300 300



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Item Specification

eSpace U1911 eSpace U1960 eSpace U1981

Maximumnumber of voicemessages thatcan be sent to theVMSconcurrently

12 30 30

Voice messagestorage mode

Stored in the built-instorage card (16 GBspace supported byeach storage card)



Application ScenarioThe administrator has configured the CTVMU service for a user (A).

When another user (B) calls A, B leaves a message as prompted. The service operation is shownas Figure 4-1. The system pushes an MWI message or a screen message to A's terminal.

At a convenient time, A dials the VMS unified access code, performs operations as prompted,and retrieves B's message. The service operation is shown as Figure 4-2.

Figure 4-1 Leaving a message



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Figure 4-2 Retrieving a message

4.10 Unified MessagingThis topic describes the functions and application scenarios of the unified messaging service.


The unified messaging service provides voice and fax mailbox services. After a user hassubscribed to the unified messaging service, that user can access the system to retrieve voice orfax messages using a landline phone, fax machine, mobile phone, or PC from anywhere, at anytime.

Table 4-9 describes the two types of unified messaging service.



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Table 4-9 Unified messaging service types

Service Description

Voicemailboxservice

Call transfer tovoice mailboxunconditional(CTVMU)

A user (A) has subscribed to the CTVMU service. Whenanother user (B) calls A, the call is transferred to the unifiedmessage system (UMS) unconditionally. B then leaves amessage as prompted by the UMS.

Call transfer tovoice mailbox onno reply(CTVMNR)

A user (A) has subscribed to the CTVMNR service. Whenanother user (B) calls A, the call is transferred to the UMSif A does not answer the call within the preset period(configurable, with the value ranging from 5s to 50s;default: 20s). B then leaves a message as prompted by theUMS.

Call transfer tovoice mailbox onbusy (CTVMB)

A user (A) has subscribed to the CTVMB service. Whenanother user (B) calls A, the call is transferred to the UMSif A is busy. B then leaves a message as prompted by theUMS.

Faxmailbox

One-terminal-one-number faxmailbox

A user (A) has subscribed to the one-terminal-one-numberfax mailbox service. When another user (B) dials A's faxextension number on a fax machine, the call is transferredto the UMS. B can then send a fax as prompted to A.

Fax mailboxservice withunified accesscode

A user (A) has subscribed to the unified access code-basedfax mailbox service. When another user (B) dials the unifiedaccess code for sending faxes to A on a fax machine, thecall is transferred to the UMS. B can then send a fax asprompted to A.

Call transfer tofax mailboxunconditional(CTFMU)

A user (A) has subscribed to the CTFMU service. Whenanother user (B) calls A, the call is transferred to the unifiedmessage system (UMS) unconditionally. B can then send afax as prompted to A.

Messagenotification andretrieval

Messagenotification

When a user has a new message, the system notifies the userof that new message with emails or calls.

Messageretrieval

A user can retrieve voice messages using a phone or emailand fax messages using a fax machine or email.

Typical NetworkThe UMS has two core devices: UMS server and unified gateway. The two devices are connectedusing SIP to provide voice and fax mailbox services.

Figure 4-3 illustrates a typical UMS network.



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Figure 4-3 Typical UMS network

Device functions in a UMS network:l UMS server

The UMS server stores all voice and fax messages. It notifies users of new messages withcalls or emails. Users can retrieve messages using phones, fax machines, emails, or webpages.

l Unified gatewayThe unified gateway is a voice exchange device for call control.

l Mail serverThe mail server notifies users of new messages using emails.

l SMS gatewayThe SMS gateway notifies users of new messages using the SMS service.

NOTE

Currently, only Movius UMS can connect to the MAS2.0 of China Mobile (in mainland China).

Application ScenarioFigure 4-4 illustrates an example of the unified messaging service. This example uses theCTVMNR service.



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Figure 4-4 CTVMNR service

1. An external user (A) calls an internal user (B) who has subscribed to the CTVMNR service.2. B does not answer the call.3. The system transfers the call to B's voice mailbox and prompts A to leave a message. A

then leaves a message.4. The system notifies B of the new message with a phone call or an email based on the preset

message notification mode.5. B retrieves the message using a phone, email, or web page.

For more information about the UMS, see the Product Description released with the UMSproduct. To obtain eSpace UMS documentation, visit http://support.huawei.com/enterpriseand choose Product > Unified Communication and Collaboration > UnifiedCommunication > Unified Communications Applications > eSpace UMS.

4.11 RecordingIn eSpace UC solution, the eSpace Audio Recorder can record two-party calls and conferences.

Function DescriptionThe eSpace Audio Recorder uses the site recording mode, in which the eSpace Audio Recorderjoins a call or conference as a participant to receive data for recording.

l Recording a two-party callThe eSpace Audio Recorder joins an ongoing two-party call to establish a three-partyconference. The eSpace Audio Recorder receives SIP and RTP streams in the conferencefor recording. Figure 4-5 illustrates the site recording process.



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Figure 4-5 Site recording process

l Recording a conference

During a voice conference, the moderator can enable the recording function. The eSpaceAudio Recorder joins the conference as a participant and records the conference.

The administrator can view the recorded file and play back it.

An eSpace Audio Recorder can connect to a maximum of eight unified gateways.

Application Scenario 1: Recording a Two-Party Call

During a call between users A (calling party) and B, A presses the recording button on the phoneto start recording. When recording starts, the two parties can hear an announcement indicatingthat the call will be recorded. A can press the recording button again to stop recording. The twoparties then hear an announcement indicating that the recording is stopped.

Application Scenario 2: Conference Recording

During a voice conference, the conference moderator presses the recording button on the phoneto start recording. When recording starts, participants can hear an announcement indicating thatthe call will be recorded. The moderator can press the recording button again to stop recording.Participants then hear an announcement indicating that the recording is stopped.

For more information about the eSpace Audio Recorder, see the Product Description releasedwith the eSpace Audio Recorder. To obtain eSpace Audio Recorder documentation, visit http://support.huawei.com/enterprise and choose Product > Unified Communication andCollaboration > Unified Communication > Unified Communications Applications >eSpace Audio Recorder.

4.12 Instant MessagingThis topic describes the functions of the instant messaging (IM) service.

P2P IM

The P2P IM services allow two users to send IMs, transfer files, and send SMS messages witheach other. Table 4-10 describes the P2P IM services supported by eSpace UC solution.



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Table 4-10 IM service

Service Description

Online message An IM includes content in .html format such as texts, emoticons, andsnapshots.NOTE

eSpace Mobile and eSpace Mobile HD do not support transmission ofsnapshots.

The text to send can contain a maximum of 1000 characters (includingemoticons, each of which takes up 3 characters). The content(including pictures) to send in each IM cannot exceed 10 MB.

Historical IM record The users can view the historical IM records on their UC softterminals.

SMS message Text messages can be sent and received between eSpace Desktop andmobile phones.NOTE

Currently, eSpace UC can connect to the MAS2.0 of China Mobile (inmainland China).

Offline message Offline messages can be sent between UC soft terminals. When therecipient of a message is offline, the message is buffered. The bufferedmessage is sent to the recipient when the recipient goes online.

Temporary Group IMAn enterprise user can select multiple contacts to create a temporary group on eSpace Desktop.Contacts in the temporary group can send IMs in the group's IM window.

NOTE

eSpace Mobile and eSpace Mobile HD do not support temporary groups.

Contact Group IMAn enterprise user can create and manage contact groups. A contact group member can sendIMs in the contact group IM window, and all the other members in the group can receive theIMs.

P2P File TransferFiles can be transferred between eSpace Desktops. A user can drag a file to the IM window ofeSpace Desktop for file transfer.

NOTE

File transfer is unavailable between an internal eSpace Desktop and an external client.

l The types of files that are not allowed to transfer are configurable. No default settings areprovided.

l The maximum size of a file to transfer is configurable. The maximum size is 50 MB, whichis also the default value.



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l The maximum number of files to transfer concurrently to a single receiver on a per-userbasis is configurable. The value ranges from 1 to 5. The default value is 5.

4.13 GroupThis topic describes the functions of the group service.

eSpace UC solution supports two types of groups: contact groups and temporary groups.

Contact Group

A user can create a contact group on his or her UC soft terminal, and invite others to this group.The user who creates the group is the group administrator. Others can accept or reject theinvitation. Users outside of a group can request for the group membership by searching for thegroup ID. A group administrator can dismiss the group he or she created when the group is notrequired.

A contact group with fixed group members always exists in the group list, unless the group isdismissed. A user in a group can send group IMs, view the status of others in the group, and startinstant conferences with all group members. Therefore, if some users need to have frequentdiscussions, a contact group for them is very useful.

Table 4-11 Contact group specifications

Item Enterprise's UserCapacity ≤ 1000

Enterprise's UserCapacity ≤ 10000


Maximum number ofcontact groups

5000 50000 250000

Maximum number ofmembers per contactgroup

500 500 500

Maximum number ofcontact groups thateach user can create

5 5 5

Temporary Group

A user can create a temporary group and invite related personnel to the group for discussion. Auser in the temporary group can send group IMs, view the status of others in the group, and startinstant conferences with all group members. The user who creates the temporary group canremove a member from the group. Any user in the temporary group can invite others to thegroup. A group member can leave the group by simply closing the temporary group window.When all members leave the temporary group, the group is dismissed.

NOTE

eSpace Mobile and eSpace Mobile HD do not support temporary groups.



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Table 4-12 Temporary group specifications

Item Enterprise's UserCapacity ≤ 1000



Maximum number oftemporary groups

10000 100000 500000

Maximum number ofmembers pertemporary group

100 100 100

4.14 PresenceThis topic describes the functions and application scenarios of the presence service.


UC soft terminals (eSpace Desktop, eSpace Mobile, and eSpace Mobile HD) display the terminalstatus and information of enterprise users. Users can set their terminal status for others to learnabout their working status. Users can query the status and information of a contact in real timeand select an appropriate communication mode according to the contact status.

The contact status can be online, away, busy, offline, and DND, and the information about thecontact includes the signature, profile picture, and phone number. The system provides defaultauto replies when users are away, and also allows users to customize auto replies.

The contact status changes are synchronized to the terminals of other users in real time.


If a user wants to go somewhere else, the user can set his or her UC soft terminal status toAway and the auto reply to "I am leaving for a while. I will reply to you later." Others can learnabout the status of this user and will contact this user later or select an appropriate communicationmode to reach this user. If others send IMs to this user even when finding that this user is away,they will receive the auto reply preset by this user.

If a user is busy and does not want others to disturb him or her, he or she can set his or herterminal status to Busy. Others can learn about the status of this user and will contact this userlater if things are not urgent.

4.15 Multimedia ConferencingThis topic describes the functions and application scenarios of the multimedia conferencingservice.


A multimedia conference is a combination of voice, video, and data conferences.



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Conference scheduling: A convener schedules a conference beforehand using a web-based self-service system. If the web-based self-service system is unavailable, the convener asks theenterprise administrator to schedule a conference.

Ways of joining multimedia conferences: 1) Users can dial the conference access code and joina conference as prompted or click the link in the conference notification email. 2) Users acceptthe conference invitation sent by the conference moderator to join a conference. 3) eSpaceDesktop users can click the conference access shortcut and perform related operations asprompted to join a conference.

Figure 4-6 shows the main window of a multimedia conference.

Figure 4-6 Multimedia conference main window

Table 4-13 describes the multimedia conference functions.

Table 4-13 Multimedia conference functions


Video A participant can open his or her camera to share video with otherparticipants.Supported video resolution: 160 x 120, 176 x 144, 320 x 240, 352 x 288,640 x 480, 704 x 576, 960 x 720, and 1280 x 720



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Desktop andapplicationsharing

The presenter can share his or her own desktop or application with otherparticipants, or invite a participant to share the participant's desktop orapplication.A maximum of 20 applications can be shared. The presenter is allowed toinvite a maximum of four participants to share their desktops, but thedesktop of only one participant can be shared at a time.

Documentsharing

Participants can view and annotate a shared document in real time. Themoderator, presenter, and authorized participants can save, delete, turnpages of, or zoom in or zoom out on a shared document that is opened. Theycan also annotate such a document (for example, marking colors, addingtext comments, and adding image comments) and delete the annotations.Documents in the following formats can beshared: .ppt, .pptx, .doc, .docx, .xls, .xlsx, .pdf, .txt, .jpeg, and .bmp. Adocument shared cannot have more than 200 pages, and its size cannotexceed 50 MB. Animation-enabled PPTs cannot be shared.

Asynchronousbrowsing

The presenter grants the permission for participants to freely turn pages ofa shared document locally. Such operations performed locally do not affectother participants.

Media sharing The presenter can play and share audio or video clips with otherparticipants.Media files in the following formats can be shared: .wmv, .wma, and .asf.

Whiteboardsharing

The moderator or presenter can create a whiteboard, and the participantscan annotate on the whiteboard.

Textcommunication

Participants can send text messages. For the moderator, presenter, andauthorized participants, they can also send private messages.

File transfer The moderator, presenter, and authorized participants can upload local filesfor other participants to download. Participants, excluding the moderatorand presenter, can only save files. They cannot delete files.The size of a file to upload cannot exceed 25 MB. Files in the followingformats cannot be loaded: .exe, .com, and .dat.

Polling The presenter can create a questionnaire. The other participants cancomplete the questionnaires on their own UC soft terminals.A maximum of 20 questionnaires can be created.

Bulletin The moderator or presenter can publish bulletins to all participants.Participants can receive new bulletins instantly and view historicalbulletins.A bulletin contains a maximum of 256 letters.

Note All participants can take notes on their UC soft terminals and save the noteslocally for future review.Notes are saved in .txt format.



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Recording The moderator and the presenter can click the recording button on their UCsoft terminals to record the conference. They can specify the local directoryfor storing recording files. The available space of the disk for storingrecording files must be greater than 300 MB. Recording files need to besaved in .wmv format, and the size of a 1-minute recording file is about 3MB. Before the recording starts, the system plays an announcement, tellingthe participants that the conference will be recorded.Two conference recording modes are available:l Recording only audiol Recording audio and screen

Conferencecontrol

l Participants can view the participant list, control their own microphonesand cameras, and set the conference interface layout.

l The moderator can control the microphones and cameras of allparticipants, set a participant as the presenter, set participants'conference control rights, invite users to a conference, and removeparticipants from a conference.

NOTICEThe media conferencing functions vary depending on the terminal type. For details about thefunction support, see the Feature Description.

The specifications of multimedia conferencing depend on how the Meeting AS is deployed. Fordetails, see 3.3 Service Server Deployment.

The video specifications are as follows:

l eSpace Desktop: displays a maximum of 16 video panes at the same time.

l eSpace Mobile and eSpace Mobile HD: displays only one video pane.

Application Scenario 1: Scheduled Conference

A user schedules a multimedia conference on the BMU self-service portal, specifies the numberof participants, conference time, topic, conference type, and multimedia type, and sends aconference notification to all participants by email or SMS.

When the conference start time arrives, participants can join the conference by clicking the linkin the conference notification. They can join the conference 5 minutes (which is not configurable)before the conference starts or when the conference is already started but not ended. When theconference is about to end, the system reminds all the participants. If participants are still in theconference when the end time arrives, the conference is prolonged by 15 minutes automatically.The system keeps performing this operation until all participants leave the conference. If theconference is prolonged by over 6 hours and no user performs operations within half an hour,the system displays a message, asking whether to continue the conference. If there is no responsewithin 30s, the system automatically ends the conference.



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Users who join the conference using UC soft terminals can have voice communication and sharedata, while users who join the conference using other terminals can have voice communicationonly.

NOTE

If the SMS function is required, eSpace UC solution needs to connect to a SMS gateway. Currently, eSpace UCsolution can connect to the MAS2.0 of China Mobile (in mainland China).

Application Scenario 2: Instant Conference

A user wants to have an instant conference with some contacts. After the user creates an instantmultimedia conference through a UC soft terminal, the system automatically calls the contacts.After answering the calls, the contacts join the conference. Contacts joining the conference usingUC soft terminals can enjoy voice communication, data sharing, and video sharing. Contactsjoining the conference using other terminals are granted only voice communication.

The moderator can invite other contacts to join an ongoing instant conference.

In an instant conference, if a participant hangs up and leaves the conference, the conference stillcontinues.

Application Scenario 3: Progressive Communication

Two users send IMs to each other using their UC soft terminals

1. One of them wants to have more direct communication and therefore clicks the call buttonin the IM window to start a voice call with the other user.

2. During the communication, they want to consult others about a problem. Then, in the callingwindow, the voice call initiator adds the desired contacts to the call, forming a voiceconference.

3. During the communication, the voice conference participants start their cameras to upgradethe voice conference to a video one.

4. One of the participants in the video conference clicks the multimedia conference icon inthe calling window to start a multimedia conference where the participant can share his orher desktop or documents.

Figure 4-7 illustrates the progressive communication.

Figure 4-7 Highly-efficient, progressive communication



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Application Scenario 4: Asynchronous Browsing of a Shared DocumentIn a conference, the moderator is sharing a document and grants the permission for participantsto freely turn pages of the document. When the moderator is explaining the first part of thedocument, a participant wants to browse other parts of the document since he or she is alreadyfamiliar with the information in the first part. The participant can then locally browse thedocument freely. When this participant turns pages, the moderator and the other participants stillstay on the page the moderator is sharing.

Figure 4-8 Asynchronous Browsing of a Shared Document

4.16 IP Phone LinkageThis topic describes the functions and application scenarios of the IP phone linkage service.

In IP phone linkage, a UC account corresponds to a linkage number for two terminals (UC softterminal and IP phone). The linked IP phone and eSpace Desktop must register with the sameU1900.

IP phone linkage combines the advantages of eSpace Desktop (operation convenience) and IPphone (HD audio) to deliver better communications experience for enterprise users. Afterlinkage is enabled, a user can select his or her IP phone as the communication device on his orher eSpace Desktop. The user's IP phone and eSpace Desktop are then linked. The user canperform operations, such as placing, answering, rejecting calls, holding and resuming calls,diverting calls, initiating instant conferences, and joining scheduled conferences, on the eSpaceDesktop for the linked IP phone. The IP phone carries audio streams and responds according tothe operations performed. Table 4-14 describes the application scenarios of IP phone linkage.



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Table 4-14 Application scenarios of IP phone linkage

Function Application Scenario

Statussynchronization

When a user is engaged in an ongoing call using an IP phone, the linkedeSpace Desktop displays the calling window and allows users to performrelated operations.

Answeringcalls

When others call a user's linkage number, the user's eSpace Desktop andlinked IP phone ring simultaneously.The user can answer calls in either of the following ways:l By clicking the Answer icon on the eSpace Desktop. The IP phone then

automatically goes off-hook. The user answers the call using the IPphone, and the eSpace Desktop displays the calling window.

l By picking up the IP phone or pressing the Speaker button the IP phone.The user answers the call using the IP phone, and the eSpace Desktopdisplays the calling window.

Placing calls A user can place calls in either of the following ways:l By searching the directory for the contact on the eSpace Desktop and

directly calling that contact. The linked IP phone automatically goesoff-hook, and the eSpace Desktop displays the calling window.

l By dialing a number on the IP phone.

Ending calls A user is engaged in an ongoing call using the IP phone, and the linkedeSpace Desktop displays the calling window. The user can end the call ineither of the following ways:l By clicking the Hangup icon on the eSpace Desktop.l By hanging up the IP phone directly.

Rejecting calls When others call a user's linkage number, the user's eSpace Desktop andlinked IP phone ring simultaneously.The user can reject the call in either of the following ways:l By clicking the Reject icon on the eSpace Desktop. The user's eSpace

Desktop and IP phone both stop ringing.l By pressing the Reject softkey on the IP phone. The user's eSpace

Desktop and IP phone both stop ringing.

Holding andresuming calls

A user is engaged in an ongoing call using the IP phone, and the linkedeSpace Desktop displays the calling window. If the user wants to place anew call, the user needs to place the current call on hold. To simplifyoperations, the user directly presses the Hold icon on the eSpace Desktop,searches the directory for the desired contact, and calls that contact. TheIP phone automatically carries the audio streams of the new call. After thecall is enabled, the user clicks the Resume icon on the eSpace Desktop toresume the previous call.



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Function Application Scenario

Diverting calls When others call a user's linkage number, the user's eSpace Desktop andlinked IP phone ring simultaneously. If the user wants to transfer the callto his or her mobile phone, the user can click the Transfer icon on the eSpaceDesktop and enters the mobile number. The mobile phone rings, and theuser's eSpace Desktop and IP phone stop ringing.

Initiatinginstantconferences

A user selects multiple contacts on the eSpace Desktop and starts an instantconference. The linked IP phone automatically goes off-hook and carriesaudio. The user can perform conference control operations on the eSpaceDesktop. If the conference is a multimedia one, the IP phone carries audioand the eSpace Desktop carries data.If the user starts an instant conference on the IP phone, the IP phone carriesaudio and the linked eSpace Desktop carries data. The user can performconference control operations on the eSpace Desktop.

Joiningscheduledconferences

On the eSpace Desktop, a user joins a scheduled conference from theconference list, by one button click, or by dialing the desired number. Thelinked IP phone then carries the audio. The user can perform conferencecontrol operations on the eSpace Desktop. If the conference is a multimediaone, the IP phone carries audio and the eSpace Desktop carries data.If the user joins a conference by dialing the desired number on the IP phone,the IP phone carries audio and the linked eSpace Desktop carries data. Theuser can perform conference control operations on the eSpace Desktop.

Switchingaudio betweenthe eSpaceDesktop and IPphone during acall

During a call, a user can simply click the Switch icon on the eSpace Desktopto switch the audio between the eSpace Desktop and the linked IP phone.



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5 Reliability

5.1 Reliability PanoramaDifferent components in eSpace UC solution use different reliability approaches.

The following tables list the reliability approaches taken by different components on eSpace UCsolution. The actual reliability approaches to take depend on the enterprise's user capacity andreliability requirements.

Table 5-1 Voice reliability

Component

Two-NodeClust

er

Disaster

Recovery

Local

Regeneration

Power-Off

Survival

Multi-

Homing

Restrictions andRemarks

U1980 √ √ √ × N/A

l Either local two-nodeclustering or remotedisaster recovery can bedeployed for thegateways.

l When a distributednetwork supportsdisaster recovery, thesum of level-1 branchesplus twice the number oftandem offices must besmaller than 255.

l After an active/standbyswitching of thegateways for disasterrecovery, services can beconfigured on thestandby gatewaythrough the BMU.

Huawei eSpace Unified Communications SolutionOverview 5 Reliability


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Component

Two-NodeClust

er

Disaster

Recovery

Local

Regeneration

Power-Off

Survival

Multi-

Homing

Restrictions andRemarks

U1981/1960/1911 √ √ √ √ N/A

However, gateway datasynchronization isunidirectional, which isonly from the activegateway to the standbygateway. As a result,when the active gatewayrecovers, servicesconfigured on thestandby gatewaybecome invalid.

IP Phone N/A N/A N/A N/A √ -

eSpace Desktop N/A N/A N/A N/A √ UC soft terminals supportonly two SIP servers. Theysupport only disasterrecovery of the gateways,but do not support localregeneration.

eSpace Mobile/eSpace MobileHD

N/A N/A N/A N/A √

IAD104H N/A N/A N/A × √ -

IAD132E(T) N/A N/A N/A √ √ IAD132/196/1224 cansupport power-off survivalas long as it is equipped withthe OSU board.

IAD196/1224 N/A N/A N/A √ √



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Table 5-2 IPT application reliability

Component

Two-NodeClust

er

DisasterRecover

y

GatewayDisasterRecovery

Restrictions and Remarks

Movius UMS √ √ √

The Movius UMS can connect tomultiple unified gateways in adistributed network. It supports amaximum of 20 SIP links,including those to the unifiedgateways, email server, and SMSgateway.

eSpace UMSV200R002 √ × √

The eSpace UMS can connect to amaximum of two unified gatewaysthat work in active/standby mode.

eSpace AudioRecorder (siterecording)

√ √ √ -

Table 5-3 ECS reliability

Component

Cluster

Two-NodeClust

er

Disaster

Recovery

GatewayDisasterRecovery

Restrictions and Remarks

eServer √ √ × √N+1 clustering is supported. InV200R002C00, N is 1.

MeetingMS √ × √ N/A -

AppAgent × √ × √ 1+1 cold standby is supported.

MAA √ × × N/A -

Table 5-4 Management component reliability

Component

Two-Node

Cluster

DisasterRecovery Restrictions and Remarks

BMU √ × -



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Component

Two-Node

Cluster

DisasterRecovery Restrictions and Remarks

eSight √ √

eSight supports local two-node clustering andremote disaster recovery. Either local two-nodeclustering or remote disaster recovery can bedeployed.In the remote disaster recovery mode, the networkbandwidth cannot be lower than 50 Mbit/s.In eSpace UC solution, eSight is generally notconfigured in the two-node cluster mode or disasterrecovery mode.

5.2 Redundancy Backup for Key ModuleseSpace U1911/U1960/U1980/U1981 is an integral part of eSpace UC solution. A unifiedgateway uses two control boards for hot standby, multiple service boards and interface boardsfor load balancing, and multiple network ports and power modules for redundancy backup.

Table 5-5 describes the redundancy backup for key modules on eSpace U1911/U1960/U1980/U1981.

Table 5-5 Redundancy backup for key modules

RedundancyBackupApproach

U1911

U1960

U1980 U1981 Description

MultipleMTUboards(mediatrunkresourceboards) forloadbalancing

√ √ - √ Multiple MTU boards are installed on theunified gateway. The system polls theMTU boards and selects an appropriate onefor allocating resources.When an MTU board is faulty, the ongoingcalls are affected and the availableresources are reduced. The other MTUboards share the load to ensure a functionalsystem.



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U1911

U1960


MultipleMRSboards(mediaresourceboards) forloadbalancing

- - √ - Multiple working MRS boards load-balance resources.When an MRS board is faulty, the ongoingcalls are affected and the availableresources are reduced. The other MRSboards share the load to ensure a functionalsystem.

MultipleDTUboards(digitaltrunkinterfaceboards) forloadbalancing

- - √ - Multiple DTU boards load-balance trunkinterface resources. When a DTU board isfaulty, the ongoing calls are affected andthe available resources are reduced. Theother DTU boards share the load to ensurea functional system.

Two SCUboards(controlboards) forhotstandby

× × - √ When the active SCU board is faulty, thestandby SCU board automatically takesover services. The active/standby failoverdoes not interrupt services and increasesthe mean time between failures (MTBF).

TwoSMCUboards(controlboards) forhotstandby

- - √ - When the active SMCU board is faulty, thestandby SMCU board automatically takesover services. The active/standby failoverdoes not interrupt services and increasesthe mean time between failures (MTBF).

Networkportbackup

√ √ √ √ In single-network-port mode, networkports 0 and 1 provide the same functions,and they back up each other.



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U1911

U1960


Twopowermodulesfor currentequalization andpowerbackup

×

Onepowermodule

√ √

2+1powermodules forcurrentequalizationandpowerbackup

√ In normal situations, each power moduleprovides current for load balancing. If apower module stops working, the otherpower module automatically takes over itsservices to ensure uninterrupted powersupply.When two power modules are configured,they must be both DC or AC. The powermodules are hot swappable.

5.3 Two-Node Cluster and ClusteringeSpace UC solution supports two-node clusters for core gateways, some service servers, andsome databases. When the active node in a two-node cluster fails due to a hardware or networkfault, the standby node automatically takes over services. In addition, eSpace UC solutionsupports clustering of eServers, MAAs, Meeting MSs, and recording servers.

Two-Node Cluster Typical Networking

Figure 5-1 Typical network for active/standby redundancy



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Two-Node cluster MechanismTable 5-6 describes the two-node cluster mechanisms of these components.



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Table 5-6 Two-node cluster mechanisms

Component

Two-Node cluster Mechanism Service RecoveryMechanism

Impact onServices

eSpaceU1911/U1960/U1980/U1981

Active/Standby redundancyl Two unified gateways are

deployed at the headquarters asthe active and standby nodes.The active and standby nodesuse a heartbeat mechanism toconstantly check each other'sstatus.NOTE

The active and standby nodesmust use the same unifiedgateway model.

l When the active and standbynodes are running correctly, allusers register with the activenode. The active nodeprocesses all user requests andsynchronizes user registrationand configuration data to thestandby node in real time.

l When the active node fails, thestandby node takes over allservices from the active nodeand processes all user requests.

l If the trunk gateway is notdeployed, the active andstandby nodes both connect tothe PSTN. When the active andstandby nodes are runningcorrectly, the active noderoutes calls to the PSTNthrough trunks. When theactive node fails, the standbynode routes calls to the PSTNthrough trunks.

l All service servers supportactive/standby switching of thegateways. This means theseservice servers automaticallyconnect to the standby node forservice processing after aswitching from the active nodeto the standby node.

After switching from theactive node to thestandby node due to anactive node failure, thestandby node processesall services. When theactive node recovers, thefollowing two situationsmay exist:l The active node

recovers before thepreset automaticswitching durationexpires(configurable,ranging from 0 to 255minutes; default: 5minutes). In this case,the systemautomaticallyswitches servicesback to the activenode. After theswitching, thestandby node does notprocess services, butthe active node does.

l The active noderecovers after thepreset automaticswitching durationexpires. You canmanually switchservices back to theactive node.Alternatively, specifya time (by default,02:30:00 eachmorning) for thestandby node todetect whether theactive node recovers.If the active noderecovers, services areautomatically

l The switchinglasts about 2minutes.During theswitching,new callscannot beinitiated.Services areinterrupted forat most 4.5minutesconsideringthe terminals'registrationupdateinterval. Thecalls that havebeen set up arenot affected.NOTICE

The standbynode isallowed totake overservices for amaximum of30 days. Toavoid serviceunavailability,repair orreplace thefaulty nodepromptly.

l When thestandby nodetakes over theservices, datais notsynchronizedto the activenode. Afterservices areswitched backto the activenode, theactive node



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Component


Impact onServices

switched back to theactive node.

synchronizesdata to thestandby node,and the data onthe standbynode will beoverwritten.Before manualswitchover,export datafrom thestandby nodeand import theexported datato the activenode so thatthe data that isgenerated onthe standbynode duringthe faultperiod will notbe lost.

BMU/eServer/AppAgent/DB

Active-standby VCS two-nodecluster, applicable to Linux.l In normal conditions, the active

node works in active state andthe standby node in standbystate. The active nodeprocesses all services.

l When the active node is faulty,active/standby switching takesplace and the standby nodetakes over the services.

l Data is saved in the disk array.After active/standby switching,the standby node connects tothe disk array for obtainingdata. Therefore, it isunnecessary for the active nodeto synchronize data to thestandby node.

After the active/standbyswitching, the originalstandby node becomes anactive one. The originalactive node functions asa standby one even if itrecovers. Services are notswitched back.

During the active/standbyswitching,services areinterrupted.



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Component


Impact onServices

eSpace UMS(V200R002)

Active-standby HA two-nodeclusterl In normal conditions, the active

node works in active state andthe standby node in standbystate. The active nodeprocesses all services andsynchronizes data to thestandby node.

l When the active node is faulty,active/standby switching takesplace and the standby nodetakes over the services.

After the active/standbyswitching, the originalstandby node becomes anactive one. The originalactive node functions asa standby one even if itrecovers. Services are notswitched back.

During the active/standbyswitching,services areinterrupted.

eSpaceAudioRecorder(siterecording)

Active-standby HA two-nodeclusterIn the eSpace Audio Recordersystem, the SIP server, IMP server,and database all use the active-standby HA two-node cluster,while the recording servers aredeployed in clustering mode.l The SIP server, IMP server, and

database employ the failoverclustering function ofWindows Server 2008 toimplement the HA two-nodecluster. Each cluster uses afloating IP address as itsexternal IP address. When theactive node is faulty, active/standby switching takes placeand the standby node takes overthe services.

l The recording servers work inclustering mode for loadbalancing. A heartbeatmechanism is implementedbetween the recording serversand SIP server. When detectingthat a recording server fails, theSIP server stops distributingrecording tasks to that serveruntil the server recovers.

- Recording isunavailableduring the active/standbyswitching.



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ClusteringTable 5-7 describes the clustering solutions.

Table 5-7 Clustering solutions

Component Clustering Solution

eServer Clustering of 1-3 eServersAccording to the user capacity, each eServer processes registration andservices of some users. If an eServer fails, the other eServers cannot takeover the services of this faulty eServer.

MAA Clustering of 1-3 MAAsWhen an MAA server is faulty, the other MAA servers take over theservices of this faulty MAA server.

Meeting MS Clustering of 1-8 Meeting MSsWhen a Meeting MS is faulty, the other Meeting MSs take over theservices of this faulty Meeting MS.

Movius UMS Clustering, with one or more external IP addressesWhen the Movius UMS cluster provides only one external IP address: Ifa UMS is faulty, services are automatically switched to another functionalUMS.When the Movius UMS cluster provides multiple external IP addresses:Each UMS exchanges heartbeat messages with the unified gateway. If aUMS is faulty, the unified gateway automatically connects to otherfunctional UMSs.

5.4 Remote Disaster RecoveryeSpace U1911/U1960/U1980/U1981 supports networking for remote disaster recovery (orcalled geographic redundancy). Midsize and large enterprises with multiple branches can usesuch networking for better reliability. When devices in one place are faulty, devices in anotherplace take over services to ensure service continuity.

NetworkingFigure 5-2 shows a typical network of remote disaster recovery.

NOTE

Either the two-node cluster in active/standby mode or remote disaster recovery can be used for reliabilitynetworking of the unified gateway.



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Figure 5-2 Typical network of remote disaster recovery

Disaster Recovery Mechanism of the Unified Gateway

The disaster recovery mechanism is described as follows:

l Two central nodes are deployed in two places, and each central node has one unifiedgateway deployed. The two unified gateways work in active/standby mode, known as anactive node and a standby node (the active and standby nodes must use the same gatewaymodel). The active and standby nodes use a heartbeat mechanism to constantly check eachother's status. The service servers are deployed at the central node where the active unifiedgateway resides.

l When the active and standby nodes are running correctly, all users register with the activenode. The active node processes all user requests and synchronizes data to the standby nodein real time. At least 1 Mbit/s bandwidth must be reserved for data synchronization, andthe round trip time (RTT) must be shorter than 80 ms.

l When the active node fails, the standby node takes over all services from the active nodeand processes all user requests.

l A trunk gateway can be deployed for connecting to the PSTN. If the trunk gateway is notdeployed, the active and standby nodes both connect to the PSTN. When the active and



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standby nodes are running correctly, the active node routes calls to the PSTN throughtrunks. When the active node fails, the standby node routes calls to the PSTN through trunks.

Service Recovery Mechanism of the Unified Gateway

After switching from the active node to the standby node due to an active node failure, thestandby node processes all services. When the active node recovers, the following two situationsmay exist:

l The active node recovers before the preset automatic switching duration expires (default:5 minutes). In this case, the system automatically switches services back to the active node.After the switching, the standby node does not process services, but the active node does.

l The active node recovers after the preset automatic switching duration expires. In this case,the system does not automatically switch services back to the active node. Manual switchingis required.

When the standby node takes over the services, data is not synchronized to the active node. Afterservices are switched back to the active node, the active node synchronizes data to the standbynode, and the data on the standby node will be overwritten.

Service Impact Due to Unified Gateway Disaster Recovery Switching

The switching lasts about 2 minutes. During the switching, new calls cannot be initiated. Servicesare interrupted for at most 4.5 minutes considering the terminals' registration update interval.Services are still available if the service servers are functional, and the service servers interactwith the standby node.

The switching has the following impacts:

l New services cannot be started for ongoing calls, for example, call hold.

l Ongoing voice conferences are interrupted.

l CDRs cannot be generated for ongoing calls or conferences.

l Ongoing message services are interrupted.

l Queues in the console system become invalid.

l eSpace SoftConsole disconnects from the ConsoleServer.

Remote disaster recovery does not support redundancy backup of VMS message data, recordingfiles, or voice files.

Disaster Recovery Mechanism of the UMS

The Movius UMS supports active-active remote disaster recovery. The two Movius UMSs atthe active and standby nodes keep data synchronized in real time.

The Movius UMS supports disaster recovery of the unified gateways, and vice versa. When aMovius UMS is faulty, the unified gateway automatically connects to the functional MoviusUMS to receive services. The same is true for the Movius UMS when a unified gateway is faulty.

In the remote disaster recovery network, ensure that the bandwidth for each UMS is greater than15 Mbit/s.



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Disaster Recovery Mechanism of the Recording Systeml Two SIP trunks are configured for each unified gateway to connect to the eSpace Audio

Recorder systems at the active and standby nodes.

l In normal situations, the unified gateway at the active node connects to the eSpace AudioRecorder at the active node, and the unified gateway at the standby node connects to theeSpace Audio Recorder at the standby node. The two eSpace Audio Recorder systems keepdata synchronized in real time. To support their data synchronization, at least 10 Mbit/sbandwidth must be reserved.

l When the eSpace Audio Recorder at the active node is faulty, it will fail to respond to therecording request sent by the unified gateway at the active node. The unified gateway atthe active node then sends a recording request to the eSpace Audio Recorder at the standbynode, and that eSpace Audio Recorder starts the recording task.

l When the unified gateway at the active node is faulty, the unified gateway at the standbynode takes over services and sends recording requests to the eSpace Audio Recorder at thestandby node.

l When the unified gateway and the eSpace Audio Recorder at the active node are both faulty,the standby node takes over the recording services.

Service Recovery Mechanism of the Recording System

l When the unified gateway at the active node recovers and services are switched back tothis unified gateway, this unified gateway then sends recording requests to the eSpaceAudio Recorder at the active node. If services are not switched back to the unified gatewayat the active node even when this unified gateway recovers, the standby node continues toprovide the recording services.

l When the eSpace Audio Recorder at the active node recovers, the unified gateway at theactive node will send recording requests to this eSpace Audio Recorder.

5.5 Local RegenerationAs part of eSpace UC solution, the branch nodes (eSpace U1911/U1960/U1980/U1981) providelocal regeneration functionality to ensure service continuity.

On a distributed eSpace UC solution network shown in Figure 5-3, two gateways are deployedas the active and standby nodes at an enterprise's headquarters, and a local gateway is deployedat each enterprise branch as a branch node. In normal situations, all users at the headquartersand branches register with the active node, and the active node synchronizes user and servicedata to the standby node but only user data to branch nodes. In addition, the active node, standbynode, and branch nodes verify each other's status by sending heartbeat messages.

When the active and standby nodes are both faulty or network connectivity is lost between theheadquarters and branches, users at the branches fail to register with the headquarter gateways.At that time, the branch nodes can use the local regeneration function to provide basic telephonyservices for local IP and analog phone users.

Users' dialing rules remain unchanged, but inter-branch calling using short numbers isunavailable. To call an internal user at another branch, others can dial the PSTN number of thisuser for connecting to this user through the PSTN.



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Figure 5-3 Local regeneration at branch nodes

When an enterprise branch user (for example, an IP phone user) initiates a call to another branchuser or an external PSTN user, the call request is routed to the branch node. The branch nodethen handles the call request and connects the call successfully. The same is true when an externalPSTN user calls an enterprise branch user.

In the local regeneration scenario, CDRs are generated at branch nodes. The CDRServer canobtain the CDRs from the branch nodes if they are connected.

If an enterprise branch has its own automatic switchboard number, the branch's automaticswitchboard service is available in the local regeneration scenario. If an enterprise has only oneautomatic switchboard number, the automatic switchboard service is available only at the nodeto which the automatic switchboard number belongs.

5.6 Network-Outage Local Switching and Power-OffSurvival

As part of eSpace UC solution, access gateways provide network-outage-triggered localswitching and power-off survival functionality to ensure service continuity. When a branchdisconnects from the headquarters gateway, an eSpace IAD access gateway at the branch enableslocal switching for phones under the eSpace IAD to call each other. When encountering a poweroutage, an eSpace IAD or eSpace U1911/U1960/U1981 access gateway enables power-offsurvival to ensure outgoing calls for some users.

Figure 5-4 illustrates an eSpace IAD network-outage local switching and power-off survivalscenario.



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Figure 5-4 eSpace IAD network-outage local switching and power-off survival

Table 5-8 describes network-outage local switching and power-off survival functionality.

Table 5-8 Network-outage local switching and power-off survival

Function

Description Process (Using Data in Figure5-4 as an Example)

ApplicableProduct Model

Network-outagelocalswitching

When networkconnectivitybetween a localaccess gateway andthe core gateway islost, the local accessgateway enablesnetwork-outagelocal switchingfunctionality. Phoneusers under the samelocal accessgateway can thendial short numbersto communicatewith each other.

1. The phone (phone number: 6000)of user A and the phone (phonenumber: 6001) of user B areconnected to the local accessgateway. A dials 6001, and B hearsthe ringing and answers the call.

2. User A dials 0 (an outgoing callingprefix) and 28983000 (a localphone number). This call is thenrouted to the called party throughthe trunk (phone number:28981000), and 28981000 isdisplayed on the called party'sphone.

3. A local user (phone number:28983000) calls A through thetrunk (phone number: 28981000).A's phone then rings, and A cananswer the call.

l eSpaceIAD208E(M)

l eSpaceIAD132E(T)

l eSpaceIAD196

l eSpaceIAD1224



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Function

Description Process (Using Data in Figure5-4 as an Example)

ApplicableProduct Model

Power-offsurvival

When a local accessgateway is poweredoff, the relay built inthe local accessgateway is closed tophysically connectFXS ports to FXOports, which meansthat phones underFXS ports aredirectly connectedto the PSTN. Usersthen can makeoutgoing callsthrough these FXSports.

1. User A dials 0 (an outgoing callingprefix) and 28983000 (a localphone number). This call is thenrouted to the called party throughthe trunk (phone number:28981000), and 28981000 isdisplayed on the called party'sphone.

2. A local user (phone number:28983000) calls A through thetrunk (phone number: 28981000).A's phone then rings, and A cananswer the call.

l eSpaceIAD102H

l eSpaceIAD132E(T)

l eSpaceIAD196

l eSpaceIAD1224

l eSpace U1911l eSpace U1960l eSpace U1981

5.7 Terminal ReliabilityThe terminals are reliable even in the case of active/standby switching or disaster recovery thanksto redundant core gateways and service servers. They can automatically switch to functionalgateways and servers for registration.

Table 5-9 describes how the terminals respond upon active/standby switching of eSpace U1911/U1960/U1980/U1981.

Table 5-9 Terminals' support for active/standby switching

Terminal Description

IP phone IP phones support three SIP servers. In the active/standby switching orlocal regeneration scenarios, IP phones register with the working SIPserver to ensure their services.

Analog phonesunder eSpaceIADs

eSpace IADs support three SIP servers. In the active/standby switchingor local regeneration scenarios, eSpace IADs register with the workingSIP server to ensure the services of analog phones connected to theseeSpace IADs.

UC soft terminal(eSpace Desktop,eSpace Mobile,and eSpaceMobile HD)

UC soft terminals support two SIP servers. The active/standby switchingof SIP servers does not affect the services of UC soft terminals.



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6 Security

6.1 Terminal Access SecurityThis topic describes the security of terminal access from intranet and extranet.

Intranet Access Securityl IP phones are authenticated using 802.1x.l UC soft terminals (eSpace Desktop, eSpace Mobile, and eSpace Mobile HD) comply with

the intranet access security policies deployed by the enterprise.

Extranet Access SecurityAn enterprise network is divided into two parts: demilitarized zone (DMZ) and enterpriseintranet. These two parts belong to different network segments, between which an intranetfirewall is deployed to isolate the two parts using network address translation (NAT). An extranetfirewall is deployed at the edge of the enterprise network, and all terminals can access the DMZonly through this firewall. The session border controller (SBC) bridges the enterprise extranetand DMZ. It implements NAT traversal with the assistance of the extranet firewall. Thecommunications data is encrypted before being transmitted over the public network. Encryptedtransmission ensures data security.The SBC is deployed in parallel with the enterprise firewall, and this network can be called afirewall bypass network. Figure 6-1 shows the networking. The MAA or eServer addressconfigured on the terminal is the firewall's external IP address obtained after the NAT isperformed on the firewall.

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Figure 6-1 SBC deployed in parallel with the firewall

The following describes the authentication and registration principles of a UC terminal on theextranet:

1. eSpace Desktop sends an authentication request to the eServer through the firewall.2. The eServer sends the SBC's external IP address corresponding to the SIP server (which is

the U1900 series unified gateway) back to eSpace Desktop through the firewall.3. eSpace Mobile or eSpace Mobile HD sends an authentication request to the MAA in the

DMZ through the firewall.4. The MAA sends the SBC's external IP address corresponding to the SIP server back to

eSpace Mobile or eSpace Mobile HD through the firewall.5. A UC terminal sends a registration request to the SBC's external IP address.6. The SBC, through the external SIP proxy registration port, forwards the registration request

to the internal SIP server for registration.

Figure 6-2 shows the networking when the SBC is deployed behind the firewall. The IP addressof the eServer/MAA configured on the UC terminal is an extranet IP address that has beentranslated by the firewall.



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Figure 6-2 SBC deployed behind the firewall

The following describes the authentication and registration principles of a UC terminal on theextranet:

1. The UC terminal sends an authentication request to the eServer/MAA through the firewall.2. The eServer/MAA sends the mapping extranet IP address of the SIP server (U1900 series)

on the firewall to the terminal.3. The UC terminal sends a voice registration request to the extranet IP address of the firewall.4. The firewall sends the registration request to the SIP server through the SIP proxy

registration port to register the UC terminal.

6.2 Communication Service SecurityIn eSpace UC solution, service data, including voice, message, and video, is transmitted over arelatively open IP network. To avoid security issues, eSpace UC solution provides multipleservice security management mechanisms.

End-to-End Signaling and Media Encryption

l eSpace UC solution supports TLS-based encryption of signaling streams exchangedbetween terminal and servers, between terminals and unified gateways, between servers,and between servers and unified gateways.

l eSpace UC solution supports SRTP-based encryption of media streams to ensure thetransmission security of voice and data.

Service Interface Authentication

eSpace UC solution provides comprehensive management interface security policies. Thesecurity management protocols based on strong authentication and encryption ensure



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confidentiality and integrity of management channels. eSpace UC solution also providesinsecure protocols for customers to use in trusted networks, ensuring the flexibility of securitymechanisms.

Passwords are required before users invoke some interfaces between terminals and servers,between servers, or for accessing the BMU through web browsers.

Encrypted Storage and Transmission of Sensitive Data

l The access passwords used between terminals and servers and between servers areencrypted for storage.

l The passwords used for authentication between terminals and servers and between serversare encrypted for storage.

l The passwords used for joining data conferences are encrypted for storage.

l The access passwords used between terminals and servers and between servers areencrypted for transmission.

l Interfaces between the BMU and web browsers and between the BMU and conferenceclients support HTTPS.

l Interfaces between the BMU and AD server support LDAPS.

l Sensitive data is stored in the access-controlled database or configuration file. Only theoperating system administrator and the database accounts associated with applications areallowed to access the database or configuration file.

Digital Certificate Security

l Strong passwords are used for encrypting and decrypting private key files of the digitalcertificate. The passwords are encrypted for storage.

l eSpace UC solution supports replacement of digital certificates. Enterprises can customizetheir passwords, apply for certificates from certificate authorities, and replace the defaultsystem certificates.

The following interfaces use digital certificates for authentication:

l Web interface for a web browser to access the BMU

l Interface for a conference client to access the Meeting MS

l Interface for a SoftConsole to access the ConsoleServer

Service Rights Control

eSpace UC solution can control call service rights on a per-user basis. Users' call rights can beconfigured based on their business scopes to avoid issues such as toll fraud and protect enterprisebenefits.

Toll Fraud Prevention

Toll fraud is a severe communication security issue facing enterprises. The following toll fraudscenarios may exist:



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l Someone may illegally obtain the administrator's account and password, and modify theservice configuration and disable the CDR using the administrator's account and passwordobtained. Then, he or she can place toll calls.

l Someone can connect to a toll call number through the enterprise's automatic switchboard.

l An international toll call can be connected by routing the call from the enterprise's localgateway to the enterprise's international gateway.

l Someone who is not an enterprise's employee may illegally obtain an employee accountand register with the enterprise's internal voice gateway to place toll calls.

eSpace UC solution provides comprehensive security mechanisms to effectively prevent tollfraud in the preceding scenarios.

l The core gateways and servers are deployed on the enterprise intranet and isolated fromthe public network.

l The core gateways and servers are hardened, and unused ports and accounts are disabled.The two measures combine to mitigate the risks of system attacks.

l Complex passwords are supported. It is recommended that strong passwords be used forthe administrator accounts and other key accounts, and such passwords be changedperiodically to reduce the risks of obtaining accounts and passwords in an unauthorizedmanner.

l Multiple rights control approaches are used to reduce the toll fraud risks. The approachesinclude controlling outgoing calls from the automatic switchboard, controlling outgoingcalls routed through trunks, controlling user service rights, and limiting the duration andconcurrence of toll calls.

l Users can be authenticated by IP address, password, IP address+password, or IP addresssegment to prevent unauthorized user registration.

l Whitelists and blacklists for management IP addresses can be configured. If the IP addressof a maintenance terminal is not whitelisted, users cannot log in to eSpace U1911/U1960/U1980/U1981 through this maintenance terminal.

l The CDRServer is provided for recording CDRs in real time. The recorded CDRs ensuretraceable information in case of toll fraud.

Directory Access Rights Control

The administrator can set different user levels (a maximum of 20 user levels) for accessing thecorporate directory. Users at a higher level can view information about others at the same or alower level, but users at a lower level cannot view information about others at a higher level.

Sensitive Word Filter

eSpace UC solution supports filtering of sensitive words. If an IM carries sensitive words definedin the system, the sensitive words are displayed as asterisks (*) at the Rx end. The administratorcan set the sensitive words.

IM and File Transfer Security

l The maximum characters that an IM contains can be limited.



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The text to send can contain a maximum of 1000 characters (including emoticons, each ofwhich takes up 3 characters). The content (including pictures) to send in each IM cannotexceed 10 MB.

l The type and size of a file that can be transferred are configurable.

– The types of files that are not allowed to transfer are configurable. No default settingsare provided.

– The maximum size of a file to transfer is configurable. The maximum size is 50 MB,which is also the default value.

– The maximum number of files to transfer concurrently to a single receiver on a per-userbasis is configurable. The value ranges from 1 to 5. The default value is 5.

6.3 Management Plane SecurityThis topic describes the management plane security.

l eSpace UC solution supports an independent management plane, which separatesmanagement data from service data.

– The management data and service data generated during interaction between the BMUand terminals are transmitted through different ports.

– eSpace U1911/U1960/U1980/U1981 supports separation of management network portsfrom service data network ports.

l Maintenance terminals access the servers or eSpace U1911/U1960/U1980/U1981 throughSSH.

l Comprehensive management protocols are used.

– HTTPS is used for web management.

– FTPS is used for file upload and download.

– eSight uses SNMPv3 for managing service NEs and uses TR069 over SSL for managingIP phones. The management channel between eSight and eSpace U1911/U1960/U1980/U1981 runs SSH.

l eSpace UC solution supports authentication based on strong passwords, and the defaultpasswords are strong passwords, too. This approach effectively prevents brute-forceattacks.

l eSpace UC solution records operation logs and run logs of different components, and theselogs can be viewed and downloaded.

6.4 IP Network SecurityeSpace UC solution provides a secure networking scheme to ensure the IP network security.

Figure 6-3 illustrates a secure network.



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Figure 6-3 Secure network

Network description:

l Firewalls are deployed between each enterprise branch and the Internet, and the enterprise'sinternal network topology is invisible to external users.

l eSpace UC solution offers a Communication Matrix, which provides guidance for users toconfigure port access policies on the firewalls. Users can disable the unused ports accordingto the Communication Matrix.

l A DMZ is created between the intranet and extranet, and devices such as the SBC and MAAare deployed in the DMZ. Firewalls are deployed between the Intranet, DMZ, and extranetfor network isolation and port access control.



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7 Openness

eSpace UC solution provides open, standard interfaces for third-party systems to performsecondary development. The standards-compliant external interfaces enable eSpace UCsolution to connect to and be integrated with diverse third-party systems.

External InterfacesFigure 7-1 illustrates the external interfaces provided by eSpace UC solution.

Figure 7-1 eSpace UC solution external interfaces

Secondary Development CapabilitiesTable 7-1 describes the secondary development capabilities supported by eSpace UC solution.

Huawei eSpace Unified Communications SolutionOverview 7 Openness


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Table 7-1 Secondary development capabilities

Module Secondary Development Capability

ECS openness Supports secondary development or third-party integration of thefollowing ECS functions:l Bulletin sendingl Click to dial (CTD)l Click to conference (CTC)l User registration and deregistrationl Scheduled conferencel SMS connection (MAS2.0)

Control COM control, C++ control, C# control, and JS control

CustomizableeSpace DesktopUI

Supports replacement of the following resources:l Desktop shortcut icon and namel eSpace logo on the eSpace Desktop GUIl eSpace in the title bar of the main windowl Background picture in the login windowl Personal computer and public computer icons in the login windowl eSpace icon in the system trayl Background of the navigation bar in the main windowl Button icons in the navigation bar in the main window

Connection to the Carrier NetworkeSpace U1911/U1960/U1980/U1981 connects to the PSTN using trunks, including SS7 (E1),PRA (E1/T1), QSIG (E1/T1), R2 (E1), BRI, and AT0 (FXO).

NOTE


Interoperability with Third-Party Telephony SystemseSpace U1911/U1960/U1980/U1981 can interoperate with a variety of third-party telephonysystems, such as Cisco UCM and Avaya IPT systems using SIP trunks. Supported servicesinclude basic telephony, supplementary telephony, and voice conferencing. In addition, eSpaceU1911/U1960/U1980/U1981 can connect to conventional PBXs using narrowband trunks, suchas SS7 and PRA. This compatibility expands the enterprise phone user base and also supportssmooth evolution from TDM-based communication to IP-based communication.

For more information about the interoperability of eSpace UC solution with third-party systems,visit http://3ms.huawei.com/ and choose Solutions of Enterprise BG > UC&C to obtain thecorresponding interoperability testing reports.



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http://3ms.huawei.com/

Integration with AD ServerseSpace UC solution uses the Light Directory Access Protocol (LADP) to integrate with anenterprise's existing Microsoft Active Directory (AD) server. After successful integration,contact information in the corporate directory in AD servers is synchronized to the BusinessManagement Unit (BMU) included in eSpace UC solution.

The integration between eSpace UC solution and an enterprise's AD server has the followingbenefits:

l The enterprise administrator maintains the corporate directory on the AD server.l The enterprise administrator configures AD server connection parameters and timed data

synchronization tasks on the BMU. After such configuration, updates on the corporatedirectory are synchronized in real time from the AD server to the BMU.

Integration with Microsoft LyncMicrosoft Lync is an enterprise-ready unified communications platform launched by Microsoft.It provides functions such as voice, IM, video, audio, and web conferencing over the Internet.

The voice gateway in eSpace UC solution can integrate with Microsoft Lync for voicecommunications. A VoIP client plug-in is available in eSpace UC solution to be integrated intothe Microsoft Lync client for voice functions.l Integration between the voice gateway and Microsoft Lync to implement the following

functions:

– Voice communication between a Microsoft Lync client and a UC terminal

– Voice communication between a Microsoft Lync client and a PSTN user.The supported Microsoft Lync version is Microsoft Lync 2010 and Microsoft Lync 2013.

l A VoIP client plug-in integrated into a Microsoft Lync client to provide the followingfunctions on the Microsoft Lync client:

– Enabling and disabling the VoIP client plug-in on the Microsoft Lync client

– Two new options (voice call and video call) displayed in the shortcut menu after a right-click on a contact

– Plug-in tool panel, which contains icons for displaying the keypad, viewing historicalrecords, setting the UC login account, switching between the UC soft terminal anddesktop phone, and setting audio and video parameters.

– Answering calls

– Call control

– PresenceThe supported Microsoft Lync version is Microsoft Lync 2013.

Microsoft Outlook IntegrationeSpace UC solution provides the following functions on Microsoft Outlook after integration:l Displays the status of senders' and recipients' UC soft terminals in the mail address bar.l Allows users to place a P2P or conference call by clicking the corresponding button when

the information about one or more users entered in the mail address bar matches the user(s) in the corporate directory.



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l Allows users to start a P2P or temporary group IM chat by clicking the corresponding buttonwhen the information about one or more users entered in the mail address bar matches theuser(s) in the corporate directory.

The supported Outlook versions are Outlook 2007, 2010, and 2013.

Internet Explorer IntegrationeSpace UC solution provides the following functions on IE after integration:l Dial plate: Users can click the dial plate button on the toolbar to display the dial plate.l Meeting management: Users can click the meeting management button on the toolbar to

display the meeting management page.

The supported Outlook versions are IE8, IE9, IE10 and IE11.

Interoperability with TelepresenceeSpace UC solution can interoperate with the SMC and MCU of the 86 series and 89 series inthe telepresence system to implement the following functions:l Supports audio and video communication between TP endpoints and UC soft terminals.l Allows UC soft terminals to join a telepresence conference by dialing the conference access

code.l Enables TP endpoints to call UC soft terminals to join a conference.l Allows UC soft terminals to start a data conference after they join a telepresence audio or

video conference.

Interoperability with PolycomeSpace UC solution can interoperate with the Polycom conference system for audio and videocommunication.l UC soft terminals can set up point-to-point audio and video calls with terminals in the

Polycom conference system.l UC soft terminals can dial a conference prefix to join a Polycom conference.l Polycom terminals can call UC soft terminals to join a Polycom conference.l UC soft terminals can call Polycom terminals to join a UC voice conference.



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8 Operation and Maintenance

8.1 Centralized NE MonitoringeSight centrally monitors NEs by managing their performance and alarms.

Topology Management

eSight provides a network topology to present NEs and their connections. With the help of thenetwork topology, users can understand the hierarchical structure and running status of all NEsacross the network. When a new NE is created, eSight automatically discovers and adds it to thenetwork topology. Alternatively, users can manually search for new NEs and add them to thenetwork topology.

Resource Management

eSight manages NEs by subnet. According to the physical locations of the devices, theadministrators can put the devices into different subnets for management.

Performance Management

eSight collects the performance data of managed NEs and displays it in charts. By reading thesecharts, users can understand potential network risks and take preventative measures accordingly.

eSight displays monitoring results in bar charts or line charts to clearly show the performancetrends. The administrators can eliminate potential risks by taking active measures before aperformance counter reaches its threshold.

Alarm Management

eSight monitors network alarms in topology views, alarm panels, and alarm bar charts. Itmonitors network exceptions in real time so that the administrators can take measures againstthe detected network exceptions in a timely manner to restore network operation. Theadministrators can set remote notification rules, masking rules, and tones for alarms based onthe site requirements, which optimizes network management.

Once eSight detects an alarm, the administrators can review alarm details, acknowledge thealarm, locate the alarm, and then clear the alarm.

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Configuration Management

eSight allows the administrators to remotely configure specific devices.

Device Panel Management

eSight provides an intuitive device simulation GUI (also known as device panel) for eSpaceU1911/U1960/U1980/U1981, where the administrators can view board and indicator status.

Maintenance Management

eSight supports batch upgrade of eSpace IADs and IP phones, which is useful when a largenumber of devices need to be upgraded.

8.2 Centralized Service ManagementeSpace UC solution supports centralized service management using the Business ManagementUnit (BMU) and built-in web management system of eSpace U1911/U1960/U1980/U1981.

BMU

The BMU is a service management system in eSpace UC solution. By connecting to multipleunified gateways, CDRServers, and ConsoleServers, the BMU enables users to manage a singleor a batch of numbers, accounts, and conferences as well as perform other self-service tasks.Table 8-1 describes the BMU functions.

Table 8-1 BMU functions

Function Allows Users To...

Numbermanagement

l Configure number allocation policies.l Add, modify, and delete SIP numbers and POTS numbers in batches.

Accountmanagement

l Allocate passwords and roles to accounts.l Add, modify, and delete accounts in batches.

Serviceconfiguration

Configure service rights for numbers in batches.

Conferencemanagement

Configure conference access prefixes.

Self-service l Modify personal information.l Configure the One Number Link You (ONLY) service.l Activate services.l Query the call history.l Schedule and query conferences.



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Built-in Web Management System of eSpace U1911/U1960/U1980/U1981

eSpace U1911/U1960/U1980/U1981 provides a built-in web management system for users to:

l Configure boards, users, and trunks using the configuration wizards provided.

l Configure data, services, and networks in an intuitive manner.

l Perform self-service tasks, including scheduling and querying conferences, initiatinginstant conferences, activating services, and maintaining service passwords.

8.3 Batch NE Configuration and UpgradeeSight is a network element (NE) management system in eSpace UC solution. Using eSight,users can bulk configure and upgrade a variety of NEs, including eSpace IADs and IP phones.

Table 8-2 describes the batch NE configuration and upgrade functions of eSight.

Table 8-2 Batch NE configuration and upgrade functions

NE You Can Bulk Configure... You Can Bulk Upgrade...

eSpace IAD l Network parametersl Proxy server parametersl eSight basic parameters

Host softwareeSpace IADs periodically detect theupgrade files and versions on the FTPserver and automatically upgrade theirsoftware when a new version is detected.

IP phone l Device restart parametersl Configuration file loading

parametersl Automated upgrade

parameters

Main programs of eSpace 6805, eSpace7800 series, and eSpace 8850Main programs, language packages, andsignal tones of eSpace 7900 series

8.4 Local Configuration and MaintenanceThe Local Maintenance Terminal (LMT) is a local configuration and maintenance system foreSpace U1911/U1960/U1980/U1981.

The LMT system connects to eSpace U1900 series using SSH/Telnet, and a maximum of foureSpace U1900 series can be connected at the same time.

Main management functions of the LMT system:

l Configuration management

Provides a command navigation tree for data configuration and query.

l Alarm management

Supports real-time alarm query and provides alarm handling suggestions; supports alarmexport.

l Maintenance management



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Supports functions such as data configuration, voice file management, patch management,license management, and visualized VU script generation.

l Signaling tracingTraces and parses broadband and narrowband signaling.

l UpgradeProvides version and patch backup, version upgrade, and patch installation functions.

l Log collectionAllows users to load operation logs, run logs, and debug logs.

l Offline operationAllows users to parse alarm files, log files, and signaling tracing files offline, and supportsoffline upgrade of data files.

8.5 Statistics QueryeSpace UC solution supports statistics query. The enterprise administrator can query related dataon the BMU, and common enterprise users can query their call records on the self-serviceplatform.

Statistics Query Functions for the Enterprise AdministratorThe enterprise administrator can log in to the BMU to query data listed in Table 8-3.

Table 8-3 Statistical items to query

Statistical Item Description

Call record Collects the call records of all enterprise users.

Number of UCsoft terminal users

Collects the number of online UC soft terminal users and the number ofregistered UC soft terminal users. The administrator can also obtain thelicense specifications, helping the administrator learn about whether thenumber of registered users is close to that supported by the license.

Enterprise userstatistics

Collects the total number of enterprise users and the total number ofregistered UC soft terminal users within a specified period.

Log audit

Includes message audits and login audits. The log audit function can beenabled or disabled as required.l Message audit: audits IM, file transfer, and SMS logs.l Login audit: audits login and logout logs.

Conferenceresources

Displays the usage of conference resources on a certain unified gatewayor on all unified gateways in charts. This approach helps theadministrator schedule conference resources more appropriately.



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9 CDR and Billing

eSpace U1911/U1960/U1980/U1981 works with the CDRServer to generate call detail records(CDRs) for the Business Management Unit (BMU) or a third-party billing system to obtain.

Networking

eSpace U1911/U1960/U1980/U1981 generates CDRs for all users connected to it and saves theCDRs to its CDR pool. The CDRServer obtains the CDRs from the CDR pool of eSpace U1911/U1960/U1980/U1981, parses the CDRs to generate CDR files, and save them in the local disk.A CDRServer can connect to a maximum of 255 eSpace U1911/U1960/U1980/U1981s.

Figure 9-1 Networking

l The BMU obtains call records from the CDRServer through an FTPS interface, and writesthe call records to the database.

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l The administrator can manage call records on the BMU, such as querying and deleting callrecords.

l Enterprise users can query their own call records on the BMU self-service platform.l The CDRServer allows a third-party billing system to obtain the CDRs through an FTP or

FTPS interface.

The CDRServer can be installed on a PC that runs Windows Server 2008 R2 Standard (64-bit).According to the user capacity, the CDRServer can be deployed separately or on the same serveras the eServer or BMU.

Function DescriptionTable 9-1 describes the CDRServer functions.

Table 9-1 CDRServer functions


Querying CDRs Users can use query CDR files from the CDRServer using anycombinations of the following search criteria: calling number, callednumber, IP address of the device where CDRs are generated, and CDRgeneration time.

Deleting historicalCDRs

Users can delete CDR files from the CDRServer to free up disk space.

Viewing CDRpool information

Users can view the CDR pool status of eSpace U1911/U1960/U1980/U1981 on the CDRServer according to the eSpace U1911/U1960/U1980/U1981 IP address.

Controlling CDRtransfer

Users can set the CDR transfer status. When new CDRs are generatedin the CDR pool of eSpace U1911/U1960/U1980/U1981, theCDRServer determines whether to move CDRs from the CDR pool tothe original CDR folder according to the CDR transfer status.

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