IP Telephony Telephony and and IP Multimedia services Multimedia services architectures architectures 21-9-2004, Noël Crespi, noel.crespi@int-evry.fr / +33160764623
SIP & IMS Architecture SIP & IMS Architecture HSS HSS Application Application server server SGSN SGSN GGSN GGSN S- -CSCF CSCF P- -CSCF CSCF S P Packet Switched domain Packet Switched domain IP Multimedia IP Multimedia 3GPP Radio 3GPP Radio Application Application Subsystem Subsystem server server IAD IAD IP networks IP networks SIP SIP Proxy Proxy DSLAM DSLAM BAS BAS SIP SIP xDSL access xDSL access Proxy Proxy SIP SIP- -PRI PRI Gateway Gateway Access Access PSTN PSTN Router Router Point Point WLAN access WLAN access
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 at at equipments sharing and convergent services. Standardisation work 3GPP & ETSI 3GPP & ETSI
Network services control Network services control mechanisms mechanisms 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
Media control Media control -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
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, C a l regarding the PRI protocol regarding the PRI protocol l specifications itself but also the specifications itself but also the French specific PRI protocol French specific PRI protocol specifications. specifications.
SIP services lab in INT SIP services lab in INT • Runs with with open source open source • Runs proxies (IPTEL SER, Java (IPTEL SER, Java proxies based SIP Proxy SIP Proxy based • • Open Source S- Open Source S -CSCF CSCF • Several SIP clients SIP clients • Several • • Interconnexion with Interconnexion with Nortel Nortel Networks and France Networks and France Telecom 1Q05 (RNRT Telecom 1Q05 (RNRT National project project SUPER). SUPER). National
Mobile Local Services Mobile Local Services Ambient/Context • Local services • Local services Awareness & Adaptation • Multi- -access access • Multi Service Layers • Multimodality • Multimodality • Open architecture • Open architecture Communication/Session Control • Service adaptation & • Service adaptation & Context awareness awareness Context IP transport WPAN WLAN UMTS TRAIN STATION TAXI BT BT IR WLAN IR WLAN
Related standardisation standardisation activities activities Related • 3GPP 3GPP • – CN1 CN1 – • IETF (joint IETF (joint activity activity with with • Network operators operators and and Network manufacturers) ) manufacturers – SIP SIP – – SIPPING SIPPING –
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