oft P. Verbeeck/L. Schatteman - March 2000 All rights reserved © 2000, Alcatel, Antwerp. Selim...

P. Verbeeck/L. Schatteman - March 2000All rights reserved © 2000, Alcatel, Antwerp.

oftoft

Selim SARPER - Program Director & ARGE Müdürü

[email protected]

P. Verbeeck/L. Schatteman - March 2000All rights reserved © 2000, Alcatel, Antwerp.

oftoft

Alcatel 1000 Call ServerP. Verbeeck - Program Director Call

Server & [email protected]

Last updated: March 27th 2000

All rights reserved © 2000, AlcatelPVb-WZ-JM/LSch - Antwerp/Plano, March 2000, page 3 oftoft

Topics.

Product Positioning. How does the network evolve? What is a call server? Where does it fit in the network? Some applications.


Why does the Network topology change? (1)

Data (r)evolution: Data Traffic volume is rapidly overtaking Voice

Traffic volume. But: Voice still accounts for up to 80% of Operator

Revenues. Changes in regulatory environment:

Competition forces operators to review the cost of their operations.

Unbundling of the network / bundling of services allows new entrants to propose customers interesting deals.


Why does the Network topology change? (2)

Dial-Up Internet traffic (over-)loading the TDM network

Different access equipment for different service POTS/ISDN, Leased Line, Frame Relay, ADSL

The need for more bandwidth Technology evolution.

Codecs, processing capacity, … And above all:


Why switch to the New Network?

There can be only one reason: your bottom-line. New Revenues:

Offering bundled services between voice- and data.Offering new services to create a synergy between both domains.

Enhance existing voice-services with Web-capabilities. (e.g.: profile modifications.

Reduce Costs:One single network to manage for voice and data.Reduced engineering cost due to self-routing capabilities of packet-based networks.


Network of today

DataATM , IP

BBNAS

NAS

Transit TDM

Local

SMC

DSLAM

NAS = Network access serverSMC = Service Management CenterDSLAM = Digital Subscriber Line Access Multiplexer

LEX

TEX

Litespan RSU


Network of TodayIssues

Reduction of OPEX Gap between 2Mbit/s, as switching termination, and

SDH at transmission side Dial-Up Internet traffic (over-)loading the TDM

network Exponential growth in the data traffic Different access equipment for different service

POTS/ISDN, Leased Line, Frame Relay, ADSL The need for more bandwidth


Future network

DataATM , IP

Transit TDM

Local

P.F.P.F.

SMC

DSLAM

BBNAS

NAS

P.F.

TGW = Trunking GatewayCS = Call Server

TGW

CS TGW

All rights reserved © 2000, AlcatelPVb-WZ-JM/LSch - Antwerp/Plano, March 2000, page 10 oftoft5

NetworkIndependent

Services

Legacy Network Signaling/Service

Legacy Network Media

Call Server

Gateway

Network Architecture of future4 functional layers


??IP address for E.164?

GateKeeperCall Server

Controlling Voice over Data

Call server functions: Control of access/trunking and ‘residential’ gateways Toll/Tandem (Class 4) and Local Exchange (Class 5) bypassMegacop and other control protocols (MGCP, Sigtran, H.323, …) VToA and VoIP, in future also TDM and mobileDistributes call control functionality into regional platformDeployment of PoPs (Point of Presence) in new service areas


The next generation “Virtual Switch”

CallServer

Control

Transport/Media

OSS Service layers

PSTNPSTN

LEX/TEX

WGW TGW

TGW

RGWAGW

DataServers

ApplicationServers

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Call Server : network viewin data network domain

DNSServer

WebServer

BankServer

A1000Call Server

IP Terminal(SIP/H323/MGCP)

E_MailServer

MultiMediaPeripherals

ApplicationServers

LEX NAS

WGW

IP/ATMNETWORK

MediaGateway

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Wireless

PSTN

Cable

TV

GW

GW

FR

RAN

ATM LAN

ProxyGWBBRAN

GW

Convergent Networks

Core

LMDS

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The Role in the NGN

A call server is the ‘intelligence’ in a distributed switch/router network, using gateways (Trunk-, Access-, Residential-, Wireless-GW) to convert the bearer traffic from their native transport mode to the mode used in the data-network (mainly IP)

Other names, used in the industry: SoftSwitch, Call Agent

A Call Server deals mainly with real-time services: voice, video, multimedia

It does not interfere with services that require no network support

All rights reserved © 2000, AlcatelPVb-WZ-JM/LSch - Antwerp/Plano, March 2000, page 17 oftoftH.321

B-ISDN

H.323orMEGACOP

Media(RTP)

Media(RTP)

Q.931

Media(RTP)

Q.931H.320

N-ISDN

IPGateway

PBXISUP/SS7

TCAP

ISDN - BRI ISDN - BRI

IPGateway

Media(RTP)

MEGACOP

IPGateway

Media(RTP)

MEGACOP

AnalogTelephone

MobileTelephone

Media(RTP)

H.323

H.323Terminal

Media(RTP)

H.323

H.323Terminal

MobileTelephone

AnalogTelephone

PBX

ISUP/SS7

SCPSCP

TCAP

LNP/WNPEnh 800

SS7 Network

STP

STP

STP

PSTNWireless/Wireline

PSTNWireless/Wireline

INAP, TCAP, LDAP, RADIUS

TCAP INAP

SCP

LDAP Radius Enh 800 Directory

IN Services

IP Internet/Intranet

ISUP/SS7

TCAP/SS7

H.323MEGACOP

SS7GW

Call Server

MGC Call AgentH.323 Gatekeeper

Integrated IP/PSTN network topology.

IP Internet/Intranet


ATM / IPATM / IP

NetworkNetwork

N7 Network

STP

LocalExchange

LocalExchange

SS7GW

Call Server

MGC Call Agent

STP

LocalExchange

STP

ISUP/N7 ISUP/N7

ISUP/N7

ISUP/N7

Call Control ProtocolMGCP

Control & Voice

Control & VoiceControl & VoiceVToA / VoIP

TrunkGateway

SS7GW

VToA / VoIPTrunk

Gateway

VToA / VoIPTrunk

Gateway

STP network overlay

Signaling without STP overlay

Application:Toll Exchange Replacement


ISDN POTS ISDN POTSxDSL

ATM / IP ATM / IP NetworkNetwork

Call Server

Control, Voice and Data

Control,Voice and Data

Control, Voice and Data

VToA / VoIPAccess

GatewayVToA / VoIPAccess

Gateway

VToA / VoIPAccess

Gateway

IAD

xDSL

ISDN POTSxDSL

Application: Local Exchange (Class 5) Replacement


CallServer

Control

Transport/Media

OSS Service layers

TGW

AGW

RGW ...

LEX/TEX

AGW

UMTS

The next generation “Virtual Switch”

DataServers

ApplicationServers

oft P. Verbeeck/L. Schatteman - March 2000 All rights reserved © 2000, Alcatel, Antwerp. Selim...

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