ETSI EN 302 094-2 Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System No. one (DSS1) and Signalling System No.7 (SS7) protocols; Call Forwarding on Not Reachable (CFNRc) supplementary service for Cordless Terminal Mobility (CTM) phase 1; Part 2: Protocol Implementation Conformance Stateme

standard by European Telecommunications Standards Institute, 09/01/1999