ISO/IEC 13873:1995 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Call diversion supplementary services
2003ISO/IEC 13873:2003 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network; Inter-exchange signalling protocol; Call diversion supplementary services
1999ISO/IEC 13873:1995/Cor 1:1999 Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Inter-exchange signalling protocol — Call diversion supplementary services — Technical Corrigendum 1
1995ISO/IEC 13873:1995 Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Call diversion supplementary services