# ISO/IEC 15505:2000 — Withdrawn and superseded ISO standards For ISO/IEC 15505:2000, item title is Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network (PISN) — Specification, Functional Model and Information Flows — Message Waiting Indication Supplementary Service; status code is 9599; successor is ISO/IEC 15505:2003; withdrawn / published date is 2000-03-30, recorded from its source on 2026-08-05. - **Identifier:** ISO/IEC 15505:2000 _(verified: appears in the quote below)_ - **Item title:** Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network (PISN) — Specification, Functional Model and Information Flows — Message Waiting Indication Supplementary Service _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO/IEC 15505:2003 - **Withdrawn / published date:** 2000-03-30 _(verified: appears in the quote below)_ ## What the source says > 31614,IS,,ISO/IEC 15505:2000,"Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network (PISN) — Specification, Functional Model and Information Flows — Message Waiting Indication Supplementary Service","Technologies de l'information — Télécommunications et échange d'information entre systèmes — Réseau privé à intégration de services (PISN) — Spécifications, modèle fonctionnel et flux d'informations — Service supplémentaire d'indication d'attente de message",2000-03-30,2,['33.040.35'],ISO/IEC JTC 1/SC 6,9599,[27974],[36960],['en'],15, ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).