UNE-EN 302094-4V1.1.1

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 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the user (Endorsed by Asociación Espanola de Normalización in January of 2022.)