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ISO/IEC 17876:2000WithdrawnInformation technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Inter-exchange signalling protocol — Private User Mobility (PUM) — Registration supplementary serviceISO/IEC 17878:2000WithdrawnInformation technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Inter-exchange signalling protocol — Private User Mobility (PUM) — Call handling additional network featuresISO/IEC 19460:2001WithdrawnInformation technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Inter-exchange signalling protocol — Single Step Call Transfer Supplementary ServiceISO/IEC 21408:2001WithdrawnInformation technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Inter-exchange signalling protocol — Simple dialog supplementary serviceISO/IEC 22535:2006WithdrawnInformation technology — Telecommunications and information exchange between systems — Corporate Telecommunication Networks — Tunnelling of QSIG over SIPISO/IEC 23290:2002WithdrawnInformation technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Mapping functions for the tunnelling of QSIG through H.323 networks