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TS 23.517 (SA2)
TISPAN – IP Multimedia Subsystem (IMS) – Functional architecture

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V8.0.0 (PDF)  2007/12  27 p.

Rapporteur:  Mr. Bertenyi, Balazs
See also:  ETSI (TISPAN) ES 282 007TS 23.417

This TS describes the IP Multimedia Subsystem (IMS) core component of the TISPAN NGN functional architecture and its relationships to other subsystems and components.


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1 Scope2 References3 Definitions and abbreviations3.1 Definitions3.2 Abbreviations4 Overall architecture5 Overview6 Functional entities6.1 Call Session Control Function (CSCF)6.2 Media Gateway Control Function (MGCF)6.3 Multimedia Resource Function Controller (MRFC)6.4 Breakout Gateway Control Function (BGCF)6.5 Interconnection Border Control Function (IBCF)7 Internal reference points7.1 Reference point MGCF - CSCF (Mg reference point)7.2 Reference point CSCF - MRFC (Mr reference point)7.3 Reference point CSCF - CSCF (Mw reference point)7.4 Reference point CSCF - BGCF (Mi reference point)7.5 Reference point BGCF - MGCF (Mj reference point)7.6 Reference point BGCF - BGCF (Mk reference point)7.7 Reference point CSCF or BGCF - IBCF (Mx Reference Point)8 Value added services architecture8.1 Overview8.2 Reference points9 External reference points9.1 Interfaces with entities in the transfer plane9.2 Interface with the UE9.3 Interfaces with the user profile9.4 Interfaces with Charging Functions10 Interconnection with other networks10.1 Interfaces with the PSTN/ISDN10.2 Interfaces with other IP-based service subsystems11 Interface with the Network Attachment Subsystem (NASS)12 Interface with the Resource and Admission Control Subsystem (RACS)A IMS Access scenariosB IMS interconnection scenariosZZ Change history


1  ScopePDF-p. 6
2  References
3  Definitions and abbreviationsPDF-p. 7
4  Overall architecturePDF-p. 8
5  OverviewPDF-p. 9
6  Functional entitiesPDF-p. 10
7  Internal reference points
8  Value added services architecture
9  External reference points
10  Interconnection with other networks
11  Interface with the Network Attachment Subsystem (NASS)PDF-p. 19
12  Interface with the Resource and Admission Control Subsystem (RACS)PDF-p. 20
A  IMS Access scenariosPDF-p. 21
B  IMS interconnection scenariosPDF-p. 22
ZZ  Change historyPDF-p. 25

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