© Aastra - 2012

Internet2 SIP Voice ServicesCloud Computing for Unified Communications:Key Issues

Gary MadingManager, Product ManagementAastra USA

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Introduction & Agenda

VoIP & UC introductionState of standardsHosted PBX architectureFeatures / functionalityI2 OfferingManagementClose & Questions

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Voice over Internet Protocol (VoIP)

TDM-based PBXs are being replaced with VoIP PBXsTDM switching fabric functions are now handled by the IP networkUnified Communications can now be integrated with converged telephony systems

Voice over IP (VoIP) defines a way to carry voice calls over an IP network including the digitization and packetization of the voice streams. IP Telephony utilizes the VoIP standards to create a telephony system where higher level features such as advanced call routing, voice mail, contact centers, etc., can be utilized.

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Traditional PBX vs. IP PBX

Proprietary digital phones

Switching Matrix Trunks

Call Processing

Dedicated closed network

Traditional PBX

Open-standards SIP phones

MediaGateway

Shared IPnetwork

Feature Server

IP PBX

LAN

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Components of Unified Communications (UC)

Connecting the right people …

To the right information …

At the right time …

Through a variety of communications channels …

To reduce workflow latency.

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Open Standards

Standards bodies• Internet Engineering Task Force (IETF)• SIP Forum• SIPConnect

IP Multimedia Subsystem (IMS) frameworkMultivendor supportInvestment protectionSIP is now used extensively for system integration in a converged network

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Hosted vs Premises PBX

Hosted PremisesLower initial investment You own the systemLower support cost More controlAccess to PBX features from any location

Limited dependence on the WAN

Scalability Allows for better customizationFlexibility in dynamic business environments

Your data (recordings, prompts, etc.)stays local

Maintenance and upgrades rolled into operating expensesEasier support for remote and mobile workersEasier addition of ad-hoc services

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Areas of Attack for VoIP Networks

Policies and Procedures

Physical Security

Network Security (IO, UDP, TCP, etc)

Supporting Services Security(Web server, database, DHCP)

OS Security

Weak voicemail passwords, abuse of long-distance privileges

Total call server compromise, reboot, denial of service

SYN flood, ICMP unreachable, trivial flooding attacks, DDoS

SQL injection, DHCP resource exhaustion

Buffer overflows, worms, denial of service (crash), weak configuration

Toll fraud, SPIT, phishing, malformed messages (fuzzing) INVITE/ BYE/ CANCEL floods, call hijacking, call eavesdropping, call modification

VoIP protocol and application security

Source: Hacking Exposed VoIP: Voice Over IP Security Secrets & Solutions by David Endler and Mark Collier

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I2 Hosted PBX: Best-In-Class Solution

Turnkey solutions customized for higher educationAastra & Partners committed to open standardsMultiple stages of independent interoperability testing

• BroadSoft • Aastra labs• Texas A&M University labs

Faster innovationBetter service

Manufacture Interop Integration Sales Support

Best-in-Class Solution for Customers

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Deployment Architecture - Cloud

PBX infrastructure in the cloud• Centrally deployed, remotely managed• Local call control option when WAN fails• Option of full or basic features• Integration with desktop and mobile

devices

SIP Trunking• T1-PRI replacement• Metered or all-in plans• Long distance options• Toll-free options• Business continuity• Multi-site interconnect

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Initial Core Deployment

Cores deployed in New York and HoustonService turn-up expected in SeptemberAdditional nodes added as service expands

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Standard Deployment

Multiple levels of redundancyMulti-tenantNo single points of failureDeployed in geographically separate data centersEach chassis has redundant power supplies, fans, Ethernet switches and pass-through interfacesEach blade has dual, quad-core processors, RAID HDs and quad NICsHighly scalable Load sharingReal-time data replication and synchronizationRemotely managedZero downtime upgradesRollback capableIntegrates with existing PBXs and unifies corporate dial planExtensive OAM&P capabilities

Primary Site

Secondary Site

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Robust Security

Web/XSP Server• Secure http/https access• PC client interfaces• Web portal for feature control• MS Lync (OCS) and IBM Sametime

integration• Simplified API for custom integration

SIP Session Manager• Best-of-breed Session Border

Controller• SIP session security management• SIP aware NAT traversal• Topology hiding• DoS and intrusion prevention

Trusted Network

Untrusted Network

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Interfaces Ease-of-Use

URL = "http://" & XSP & "/com.aastra.xsi-actions/v1.0/user/" & UserId & "/calls/new/" & number

objHTTP.Open "POST", URL, False, UserId, PasswordobjHTTP.setRequestHeader "User-Agent", "ExcelDialer"objHTTP.send ("")

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Hosted PBX System Administration

Services Devices Routing /Numbers

EnterpriseManage enterprises, groups, numbers, services, devices

GroupManage departments, Groups, users, numbers, services, devices

DepartmentManage user moves, adds and changes

UserPersonalize services

Filter

Filter

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Hosted PBX Features

• Alternate Numbers• Anonymous Call Rejection• Auto Callback• Barge In Exempt• Blind Call Transfer• Call Forwarding Always• Call Forwarding Busy• Call Forwarding No Answer• Call Forwarding Remote Access• Call Forwarding Selective• Call Hold• Call Notify• Call Return• Call Transfer w Consultation• Call Transfer w Three Way

Consultation• Call Waiting• Calling Line ID Delivery• Calling Name Delivery• Calling Line ID Blocking• Calling Line ID Blocking Override

• Cancel Call Waiting• Consultation Hold• Directed Call Pickup• Directed Call Pickup with

Barge In• Distinctive Alerting• Diversion Inhibitor• Do Not Disturb• Extension Dialing• Instant Group Call• Last Number Redial• Priority Alerting• Push to Talk• Selective Call Acceptance• Selective Call Rejection• Sequential Ring• Shared Call Appearances• Simultaneous Ring• Speed Dial• Three Way Calling• Voice Portal Calling

• Account Codes• Authorization Codes• Call Intercept• Call Park• Directed Call Park• Call Pickup• Calling Group ID Delivery• Calling Plan

• Incoming Calls• Outgoing Calls• Forwarded Calls• Transferred Calls

• Configurable Attributes• Calling Line ID• Extensions• Feature Codes• Time Zones

• Music on Hold

Personal Features Group Features

+ Many more

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I2 Offering - Product Selection - User

Premium User Basic User

Unified Messaging

Premium ACD

Standard ACD

Agent Client

Supervisor Client

Receptionist

Lync Integration

Feature

Mobile Clients

Quality Monitoring

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I2 Offering - Product Selection - Site

CODECs

PBX Overlay

Gateways

Edge / SBC Products

Clearspan Node

Flat Rate (Metered LD)

Flat Rate (CONUS LD inc)

Hosted PBX

SIP Trunking

Toll Free Options

Interstate, Intrastate,

International LD

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Integrated Toolbar

Outlook, Internet Explorer, Firefox

Upper Toolbar Controls Services and Options

Lower Toolbar Manages Live Calls

OptionsLogin/Out

Simultaneous RingRemote Office Forwarding Options

Directories

Call Control Line Selector

Pop-up “Toast” Manages Incoming Calls

Dialing

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Mobility & Fixed Mobile Convergence

Included free in Premium licensingCarrier independentEasily managed by the user in the tool bar – no administrator involved (unless desired)Move calls seamlessly between endpoints, including mobile

Optional smartphone client• Two-stage dialing for lowering

roaming costs• VoWiFi ability• PBX features (DND, remote

office, transfer, conference, etc)

PSTN

LAN

Seamless Call Movement

Media Gateway

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VoIP Monitoring

Listening and Conversational Quality MOS scores (MOS-LQ, MOS-CQ) Listening and Conversational Quality R factors (R-LQ, R-CQ) Burst and Gap Call Quality Scores - R-Gap, R-Burst Narrowband and Wideband R and MOS scores Modem and Fax Quality Metrics Burst and Gap Loss/Discard statistics Web interface with interactive real-time charts

Monitoring Collector

SIP RTCP XR Records

Reporting

Aggregated Stats

Reporting Interface

Report Generator

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Lync / Sametime Integration

Integrates IBM Sametime and MS Lync (OCS) with ClearspanProvides Remote Call Control (RCC) as defined by MicrosoftAutomatically changes presence status when you are on the phoneIntegration is simple and inexpensive to deploy

AMS

SIP

RTP

Lync (OCS) or Sametime

Call Control

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Platform Developer Network

Services Interface

Developer’s Program Market Place

• Open APIs• RESTful interface

• Over 2000 existing developers

• Extensive documentation• Expert help

• Sell and license applications to hundreds of customers

• Make applications available to other I2 members

© Aastra - 2012

Q & A