ITU-T Q.4015.1 PDF

This Recommendation specifies the testing requirements for the interworking between the IP multimedia (IM) core network (CN) subsystem and circuit switched (CS) networks; Conformance testing – Part 1: Protocol implementation conformance statement (PICS).

This Recommendation endorses ETSI TS 102 710-1 V5.2.1 (2016), Core Network and Interoperability Testing (INT); Interworking between the IP Multimedia (IM) Core Network (CN) subsystem and Circuit Switched (CS) networks; Conformance Test Specification; Part 1: Protocol Implementation Conformance Statement (PICS).