# ISO/IEC 22535:2005 — Withdrawn and superseded ISO standards For ISO/IEC 22535:2005, item title is Information technology — Telecommunications and information exchange between systems — Corporate telecommunication networks — Tunnelling of QSIG over SIP; status code is 9599; successor is ISO/IEC 22535:2006; withdrawn / published date is 2005-05-20, recorded from its source on 2026-08-05. - **Identifier:** ISO/IEC 22535:2005 _(verified: appears in the quote below)_ - **Item title:** Information technology — Telecommunications and information exchange between systems — Corporate telecommunication networks — Tunnelling of QSIG over SIP _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO/IEC 22535:2006 - **Withdrawn / published date:** 2005-05-20 _(verified: appears in the quote below)_ ## What the source says > 41000,IS,,ISO/IEC 22535:2005,Information technology — Telecommunications and information exchange between systems — Corporate telecommunication networks — Tunnelling of QSIG over SIP,Technologies de l'information — Télécommunications et échange d'information entre systèmes — Réseaux de télécommunications 'corporate' — 'Tunnelling' de QSIG sur SIP,2005-05-20,1,['35.100.30'],ISO/IEC JTC 1/SC 6,9599,,[42920],['en'],11,"

ISO/IEC 22535:2005 specifies tunnelling of 'QSIG' over the Session Initiation Protocol (SIP) within a corporate telecommunication network (CN).

'QSIG' is a signalling protocol that operates between Private Integrated services Network eXchanges (PINX) within a Private Int ## Source - https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv Last verified: 2026-08-05. Review by: 2027-02-01. Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).