u Selim SARPER Program Director ARGE Mdr selim

u Selim SARPER - Program Director & ARGE Müdürü selim. sarper@alcatel. com. tr P.

u Alcatel 1000 Call Server P. Verbeeck - Program Director Call Server & Gateways

Topics. u Product Positioning. w How does the network evolve? w What is a

Why does the Network topology change? (1) Data (r)evolution: w Data Traffic volume is

Why does the Network topology change? (2) Dial-Up Internet traffic (over-)loading the TDM network

Why switch to the New Network? u There can be only one reason: your

Network of today SMC Transit TDM Data ATM , IP NAS = Network access

Network of Today Issues Reduction of OPEX u Gap between 2 Mbit/s, as switching

Future network CS SMC Data ATM , IP TGW Transit TDM NAS BB NAS

Network Architecture of future 4 functional layers Legacy Network Signaling/Service Network Independent Services Legacy

Controlling Voice over Data Gate. Keeper Call Server ? IP address for E. 164?

The next generation “Virtual Switch” Data Servers OSS Application Servers Service layers c c

Call Server : network view in data network domain coftc A 1000 Call Server

Convergent Networks coftc Core GW BBRAN GW GW GW PSTN TV Wireless Proxy FR

The Role in the NGN A call server is the ‘intelligence’ in a distributed

Integrated IP/PSTN network topology. SCP SCP TCAP INAP LNP/WNP Enh 800 SS 7 Network

Application: Toll Exchange Replacement Call Server ISUP/N 7 Network STP SS 7 GW MGC

Application: Local Exchange (Class 5) Replacement Call Server ATM / IP Network Control, Voice

The next generation “Virtual Switch” Data Servers OSS Application Servers Service layers Call Server

Slides: 19

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u Alcatel 1000 Call Server P. Verbeeck - Program Director Call Server & Gateways pvbe@sebb. bel. alcatel. be Last updated: March 27 th 2000 P. Verbeeck/L. Schatteman - March 2000 coftc All rights reserved © 2000, Alcatel, Antwerp.

Topics. u Product Positioning. w How does the network evolve? w What is a call server? w Where does it fit in the network? w Some applications. PVb-WZ-JM/LSch - Antwerp/Plano, March 2000, page coftc All rights reserved © 2000, Alcatel

Why does the Network topology change? (1) Data (r)evolution: w Data Traffic volume is rapidly overtaking Voice Traffic volume. w But: Voice still accounts for up to 80% of Operator Revenues. u Changes in regulatory environment: w Competition forces operators to review the cost of their operations. w Unbundling of the network / bundling of services allows new entrants to propose customers interesting deals. u PVb-WZ-JM/LSch - Antwerp/Plano, March 2000, page coftc All rights reserved © 2000, Alcatel

Why does the Network topology change? (2) Dial-Up Internet traffic (over-)loading the TDM network u Different access equipment for different service w POTS/ISDN, Leased Line, Frame Relay, ADSL u The need for more bandwidth u Technology evolution. w Codecs, processing capacity, … u And above all: u PVb-WZ-JM/LSch - Antwerp/Plano, March 2000, page coftc All rights reserved © 2000, Alcatel

Why switch to the New Network? u There can be only one reason: your bottom-line. w New Revenues: l Offering bundled services between voice- and data. l Offering new services to create a synergy between both domains. l Enhance existing voice-services with Web-capabilities. (e. g. : profile modifications. w Reduce Costs: l One single network to manage for voice and data. l Reduced engineering cost due to self-routing capabilities of packet-based networks. PVb-WZ-JM/LSch - Antwerp/Plano, March 2000, page coftc All rights reserved © 2000, Alcatel

Network of today SMC Transit TDM Data ATM , IP NAS = Network access server SMC = Service Management Center DSLAM = Digital Subscriber Line Access Multiplexer TEX BB NAS LEX Local DSLAM Litespan PVb-WZ-JM/LSch - Antwerp/Plano, March 2000, page coftc RSU All rights reserved © 2000, Alcatel

Network of Today Issues Reduction of OPEX u Gap between 2 Mbit/s, as switching termination, and SDH at transmission side u Dial-Up Internet traffic (over-)loading the TDM network u Exponential growth in the data traffic u Different access equipment for different service w POTS/ISDN, Leased Line, Frame Relay, ADSL u The need for more bandwidth u PVb-WZ-JM/LSch - Antwerp/Plano, March 2000, page coftc All rights reserved © 2000, Alcatel

Future network CS SMC Data ATM , IP TGW Transit TDM NAS BB NAS P. F. TGW = Trunking Gateway CS = Call Server P. F. Local DSLAM PVb-WZ-JM/LSch - Antwerp/Plano, March 2000, page coftc All rights reserved © 2000, Alcatel

Network Architecture of future 4 functional layers Legacy Network Signaling/Service Network Independent Services Legacy Network Media Call Server Gateway PVb-WZ-JM/LSch - Antwerp/Plano, March 2000, page coftc All rights reserved © 2000, Alcatel 5

Controlling Voice over Data Gate. Keeper Call Server ? IP address for E. 164? ? Call server functions: Control of access/trunking and ‘residential’ gateways Toll/Tandem (Class 4) and Local Exchange (Class 5) bypass Megacop and other control protocols (MGCP, Sigtran, H. 323, …) VTo. A and Vo. IP, in future also TDM and mobile Distributes call control functionality into regional platform Deployment of Po. Ps (Point of Presence) in new service areas PVb-WZ-JM/LSch - Antwerp/Plano, March 2000, page coftc All rights reserved © 2000, Alcatel

The next generation “Virtual Switch” Data Servers OSS Application Servers Service layers c c Call Server oft Control Transport/Media TGW LEX/TEX WGW TGW RGW AGW PVb-WZ-JM/LSch - Antwerp/Plano, March 2000, page coftc PSTN All rights reserved © 2000, Alcatel

Call Server : network view in data network domain coftc A 1000 Call Server Bank Server DNS Server Web Server Application Servers E_Mail Server IP/ATM NETWORK LEX NAS Multi Media Peripherals Media Gateway IP Terminal (SIP/H 323/MGCP) PVb-WZ-JM/LSch - Antwerp/Plano, March 2000, page coftc WGW All rights reserved © 2000, Alcatel

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) u Other names, used in the industry: Soft. Switch, Call Agent u A Call Server deals mainly with real-time services: voice, video, multimedia u It does not interfere with services that require no network support u PVb-WZ-JM/LSch - Antwerp/Plano, March 2000, page coftc All rights reserved © 2000, Alcatel

Integrated IP/PSTN network topology. SCP SCP TCAP INAP LNP/WNP Enh 800 SS 7 Network TCAP/SS 7 STP INAP, TCAP, LDAP, RADIUS SS 7 GW ISUP/SS 7 H. 323 MEGACOP IP Media(RTP) Gateway MEGACOP ISDN - BRI Mobile Telephone Directory MGC Call Agent H. 323 Gatekeeper ISUP/SS 7 PBX Enh 800 Call Server ISUP/SS 7 STP PSTN Wireless/Wireline Radius IP Internet/ Intranet TCAP LDAP IN Services Media(RTP) IP Internet/ Intranet H. 323 Terminal Analog Telephone H. 320 N-ISDN PVb-WZ-JM/LSch - Antwerp/Plano, March 2000, page Media (RTP) Q. 931 Media (RTP) PBX Media (RTP) c c oft IP Gateway MEGACOP H. 323 Media (RTP) H. 323 or MEGACOP IP Gateway PSTN Wireless/Wireline Q. 931 Media (RTP) ISDN - BRI Mobile Telephone H. 323 Terminal Analog Telephone H. 321 B-ISDN All rights reserved © 2000, Alcatel

Application: Toll Exchange Replacement Call Server ISUP/N 7 Network STP SS 7 GW MGC Call Agent STP network overlay Call Control Protocol MGCP STP Signaling without STP overlay ATM / IP ISUP/N 7 Network ISUP/N 7 Control & Voice VTo. A / Vo. IP Trunk Gateway Local Exchange PVb-WZ-JM/LSch - Antwerp/Plano, March 2000, page Control & Voice VTo. A / Vo. IP Trunk Gateway Local Exchange coftc VTo. A / Vo. IP Trunk Gateway Local Exchange All rights reserved © 2000, Alcatel 6

Application: Local Exchange (Class 5) Replacement Call Server ATM / IP Network Control, Voice and Data x. DSL VTo. A / Vo. IP Access Gateway IAD ISDN POTS PVb-WZ-JM/LSch - Antwerp/Plano, March 2000, page VTo. A / Vo. IP Access Gateway x. DSL ISDN POTS coftc All rights reserved © 2000, Alcatel 9

The next generation “Virtual Switch” Data Servers OSS Application Servers Service layers Call Server Control Transport/Media AGW TGW AGW LEX/TEX. . . RGW UMTS PVb-WZ-JM/LSch - Antwerp/Plano, March 2000, page coftc All rights reserved © 2000, Alcatel