M00002408
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TIA-873.002 Revision B, June 1, 2009 All-IP Core Network Multimedia Domain; IP Multimedia Subsystem – Stage 2
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Availability date: 09/09/2021
Description / Abstract:
This document defines the stage-2 service description for the IP
Multimedia Core Network Subsystem (IMS), which includes the
elements necessary to support IP Multimedia (IM) services. ITU-T
Recommendation I.130 [4] describes a three-stage method for
characterisation of telecommunication services, and ITU-T
Recommendation Q.65 [3] defines stage 2 of the method.
This document does not cover the Access Network functionality or
IP Connectivity Access Network aspects except as they relate to
provision of IM services. These aspects are covered in the
normative Annex E.
This document identifies the mechanisms to enable support for IP
multimedia applications. In order to align IP multimedia
applications wherever possible with non-IMS IP applications, the
general approach is to adopt non- IMS specific IP based
solutions.