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TR 23.897
Feasibility Study on
IMS Business Trunking
for Internet Protocol Private Branch Exchange (IP-PBX)
in Static Mode of Operation

3GPP‑Page   fToC↓   Partial Content →
V12.0.0 (Wzip)  2013/06  31 p.
Rapporteur:
Mr. Zarri, Michele
Deutsche Telekom AG

full Table of Contents for  TR 23.897  Word version:  12.0.0

each clause number in 'red' refers to the equivalent title in the Partial Content
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1Scope  p. 6
2References  p. 6
3Definitions, symbols and abbreviations  p. 7
3.1Definitions  p. 7
3.2Abbreviations  p. 7
4Use cases  p. 7
4.1Small enterprise with single point of access  p. 7
4.2Medium enterprise with single point of access  p. 7
4.3Large enterprise with multiple points of contact with the network  p. 8
5Architecture Requirements  p. 8
6Solution Alternatives  p. 8
6.1IBCF and Transit reuse  p. 8
6.1.1High level architecture  p. 8
6.1.2High level Flows  p. 9
6.1.2.1General  p. 9
6.1.2.2Terminating procedures  p. 9
6.1.2.3Originating procedures  p. 10
6.1.3Required provisioning in the network  p. 12
6.1.3.1Initial configuration at solution roll-out  p. 12
6.1.3.2Provisioning when adding a new IP-PBX  p. 12
6.1.3.3Provisioning when adding/modifying extensions behind an IP-PBX  p. 12
6.2enhanced IBCF  p. 12
6.2.1High level architecture  p. 12
6.2.1.1eIBCF  p. 12
6.2.1.2Cx' reference point  p. 13
6.2.2Session setup  p. 13
6.2.3PBX is deleted in the HSS  p. 14
6.3IBCF and S-CSCF reuse  p. 14
6.3.1High level architecture  p. 14
6.3.2High level Flows  p. 15
6.3.2.1Terminating procedures  p. 15
6.3.2.2Originating procedures  p. 16
6.3.3Required provisioning in the network  p. 17
6.3.3.1Initial configuration at solution roll-out  p. 17
6.3.3.2Provisioning when adding a new IP-PBX  p. 17
6.3.3.3Provisioning when adding/modifying extensions behind an IP-PBX  p. 17
6.4P-CSCF based  p. 17
6.4.1High level architecture  p. 17
6.4.2P-CSCF preconfigured with IP-PBX data  p. 18
6.4.3P-CSCF without provisioning of IP-PBX data  p. 18
6.4.3.1High-level principles  p. 18
6.4.3.2IMS Registration flow  p. 20
6.4.3.3Required provisioning in the network  p. 21
6.4.3.3.1Initial configuration at solution roll-out  p. 21
6.4.3.3.2Provisioning when adding a new IP-PBX  p. 21
6.4.3.3.3Provisioning when adding/modifying extensions behind an IP-PBX  p. 21
6.5Standalone BusTI-GW solution  p. 21
6.5.1High level architecture  p. 21
6.5.1.1BusTI-GW  p. 21
6.5.2Registration and session setup  p. 22
6.5.3Deregistration  p. 22
6.5.4Required provisioning in the network  p. 22
6.5.4.1Initial configuration at solution roll-out  p. 22
6.5.4.2Provisioning when adding a new IP-PBX  p. 22
6.5.4.3Provisioning when adding/modifying extensions behind an IP-PBX  p. 22
6.6S-CSCF Based Routing  p. 23
6.6.1General  p. 23
6.6.2Terminating Session Setup  p. 23
6.6.3Originating Session Setup  p. 25
6.6.4Required provisioning in the network  p. 25
6.6.4.1Initial configuration at solution roll-out  p. 25
6.6.4.2Provisioning when adding a new IP-PBX  p. 25
6.6.4.3Provisioning when adding/modifying extensions behind an IP-PBX  p. 25
7Alternatives Assessment and Conclusions  p. 26
7.1Alternatives evaluation criteria and scoring  p. 26
7.2Overview of provisioning efforts  p. 29
7.3Conclusions  p. 30
$Change history  p. 31

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