A.1 Scope

29.2023GPPRelease 17Signalling System No. 7 (SS7) signalling transport in core networkStage 3TS

This annex defines the application of M3UA in 3GPP core networks. The purpose of the Annex is to ensure the interoperability of different implementations of M3UAs used by different operators and vendors. This is achieved by:

– Clarifying certain concepts which are used in RFC 4666;

– Defining those features in RFC 4666 for which support is mandatory;

– Defining those features in the RFC 4666 for which support is optional;

– Defining those features in RFC 4666 which shall not be used;

The specification is intended for interfaces between network domains, however, it can also be used inside one network domain, and constitutes a minimum set of M3UA requirements to be supported between IP nodes and between IP nodes and SGW nodes in a 3GPP network.