Summary

Recommendation ITU-T Q.3629 v.1 (2016) specifies the interworking requirements between the IP multimedia (IM) core network (CN) subsystem and circuit switched (CS) networks.

The version number, v.1, indicates that this is version one of Recommendation ITU-T Q.3629, and that it relates to Release 10 of the relevant 3GPP/ETSI standard.

This Recommendation endorses ETSI TS 129 163 V10.19.0 (2016-01) "Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; Interworking between the IP Multimedia (IM), Core Network (CN), subsystem and Circuit Switched (CS) networks; (ETSI TS 129 163 V10.19.0 Release 10)".