This Recommendation provides the implementation conformance statement (ICS) proforma for the Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); IMS-based PSTN/ISDN Emulation; Stage 3 specification defined in [ETSI TS 183 043] in compliance with the relevant requirements and in accordance with the relevant guidance given in [ITU-T X.296] and [b-ETSI 300 406].