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ETSI TS 122 250
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ETSI TS 122 250 Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; IP Multimedia Subsystem (IMS) Group Management; Stage 1 (3GPP TS 22.250 version 14.0.0 Release 14)
standard by European Telecommunications Standards Institute, 03/01/2017
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Full Description
ETSI TS 122 250 defines the stage one description of the IMS group management. Stage one is the set of requirements which shall be supported for the provision of IMS group management, seen primarily from the subscribers' and service providers' points of view.The TS includes information applicable to network operator, service provider, terminal and network manufacturer.
Additional functionalities not documented in the TS are considered outside the scope of this TS. Such additional functionality may be on a network-wide basis, nation-wide basis or particular to a group of users. Such additional functionality shall not compromise conformance to the requirements of the IMS group management defined in this specification.