Summary

Recommendation ITU-T Q.3625 v.1 (2016) specifies requirements for supplementary services such as completion of communications to busy subscriber (CCBS) and completion of communications by no reply (CCNR) to be provided on the IMS platform.

The version number, v.1, indicates that this is version one of Recommendation ITU-T Q.3625, and that it relates to Release 10 of the relevant 3GPP/ETSI standard.

This Recommendation endorses ETSI TS 124 642 V10.7.0 (2013-07), "Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; Completion of Communications to Busy Subscriber (CCBS) and Completion of Communications by No Reply (CCNR) using IP Multimedia (IM) Core Network (CN) subsystem; Protocol specification (3GPP TS 24.642 version 10.7.0 Release 10)".