IP Telephony Telephony and and IP Multimedia services Multimedia - - PowerPoint PPT Presentation

IP IP Telephony Telephony and and Multimedia services Multimedia services architectures architectures

21-9-2004, Noël Crespi, noel.crespi@int-evry.fr / +33160764623

SIP & IMS Architecture SIP & IMS Architecture

PSTN PSTN

3GPP Radio 3GPP Radio Packet Switched domain Packet Switched domain GGSN GGSN SGSN SGSN IP Multimedia IP Multimedia Subsystem Subsystem P P-

• CSCF

CSCF S S-

• CSCF

CSCF Application Application server server Application Application server server HSS HSS

IP networks IP networks

BAS BAS DSLAM DSLAM xDSL access xDSL access IAD IAD SIP SIP Proxy Proxy SIP SIP Proxy Proxy SIP SIP-

• PRI

PRI Gateway Gateway Router Router WLAN access WLAN access Access Access Point Point

Multi access to the IMS Multi access to the IMS

Heterogeneous access to IMS SIP services. This allows network Heterogeneous access to IMS SIP services. This allows network equipments sharing and convergent services. Standardisation work equipments sharing and convergent services. Standardisation work at at 3GPP & ETSI 3GPP & ETSI

Application Servers invocation Application Servers invocation mechanisms in SIP mechanisms in SIP-

• Proxies.

Proxies. The mechanism studied are planned The mechanism studied are planned to be introduced in 3GPP & IETF to be introduced in 3GPP & IETF

Network services control Network services control mechanisms mechanisms

• New mechanisms to control

New mechanisms to control media resources in SIP media resources in SIP multimedia networks multimedia networks

• Use of SIP, XML and VoiceXML

Use of SIP, XML and VoiceXML

Media control Media control

SIP PRI interworking SIP PRI interworking

Interworking between SIP protocol Interworking between SIP protocol and Q931/PRI protocol. and Q931/PRI protocol. This allows any SIP user to call This allows any SIP user to call subscribers located on a legacy subscribers located on a legacy TDM voice network. TDM voice network. The goal is to standardize this, The goal is to standardize this, regarding the PRI protocol regarding the PRI protocol specifications itself but also the specifications itself but also the French specific PRI protocol French specific PRI protocol specifications. specifications.

C a l l

SIP services lab in INT SIP services lab in INT

• Runs

Runs with with open source

• pen source

proxies proxies (IPTEL SER, Java (IPTEL SER, Java based based SIP Proxy SIP Proxy

• Open Source S

Open Source S-

• CSCF

CSCF

• Several

Several SIP clients SIP clients

• Interconnexion

Interconnexion with with Nortel Nortel Networks and France Networks and France Telecom 1Q05 (RNRT Telecom 1Q05 (RNRT National National project project SUPER). SUPER).

Mobile Local Services Mobile Local Services

• Local services

Local services

• Multi

Multi-

• access

access

• Multimodality

Multimodality

• Open architecture

Open architecture

• Service adaptation &

Service adaptation & Context Context awareness awareness

Ambient/Context Awareness & Adaptation

Service Layers

Communication/Session Control

WLAN BT

UMTS WLAN

IP transport

WPAN WLAN TRAIN STATION

BT

TAXI

Related Related standardisation standardisation activities activities

• 3GPP

3GPP

– – CN1 CN1

• IETF (joint

IETF (joint activity activity with with Network Network operators

• perators and

and manufacturers manufacturers) )

– – SIP SIP – – SIPPING SIPPING