1 Scope

29.5773GPP5G SystemIP Short Message Gateway and SMS Router For Short Message ServicesRelease 18Stage 3TS

The present document specifies the stage 3 protocol and data model for the Nipsmgw and Nrouter Service Based Interface. It provides stage 3 protocol definitions and message flows, and specifies the API for each service offered by the IP-SM-GW and SMS Router.

The 5G System stage 2 architecture and procedures are specified in 3GPP TS 23.501 [2] and 3GPP TS 23.502 [3].

The Technical Realization of the Service Based Architecture and the Principles and Guidelines for Services Definition are specified in TS 29.500 [4] and TS 29.501 [5].

The Stage 2 architecture, procedures and services to support service based short message service (SMS) in 5G system (5GS) is specified in 3GPP TS 23.540 [14].