Digital cellular telecommunications system (Phase 2+) - Support of Mobile Number Portability (MNP) - Technical Realisation - Stage 2 (GSM 03.66 version 7.3.1 Release 1998)
Integrated Services Digital Network (ISDN) - Signalling System No.7 - Signalling Connection Control Part (SCCP) (connectionless and connection-oriented class 2) to support international interconnection - Part 3: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification (incl. Diskette!!!)
Integrated Services Digital Network (ISDN) - Signalling System No.7 (SS7) - ISDN User Part (ISUP) - Enhancements for support of Number Portability (NP) [ITU-T Recommendation Q.769.1 (2000), modified]
Integrated Services Digital Network (ISDN) - Signalling System No.7 (SS7) - ISDN User Part (ISUP) version 4 for the international interface - Part 2: ISDN supplementary service [ITU-T Recommendation Q.730 (1999), modified]
