# ISO/IEC 15506:2000 — Withdrawn and superseded ISO standards

For ISO/IEC 15506:2000, item title is Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network (PISN) — Inter-Exchange Signalling Protocol — Message Waiting Indication Supplementary Service; status code is 9599; successor is ISO/IEC 15506:2003; withdrawn / published date is 2000-03-16, recorded from its source on 2026-08-05.

- **Identifier:** ISO/IEC 15506:2000 _(verified: appears in the quote below)_
- **Item title:** Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network (PISN) — Inter-Exchange Signalling Protocol — Message Waiting Indication Supplementary Service _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO/IEC 15506:2003
- **Withdrawn / published date:** 2000-03-16 _(verified: appears in the quote below)_

## What the source says

> 31615,IS,,ISO/IEC 15506:2000,Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network (PISN) — Inter-Exchange Signalling Protocol — Message Waiting Indication Supplementary Service,Technologies de l'information — Télécommunications et échange d'information entre systèmes — Réseau privé à intégration de services (PISN) — Protocole de signalisation d'interéchange — Service supplémentaire d'indication d'attente de message,2000-03-16,2,['33.040.35'],ISO/IEC JTC 1/SC 6,9599,[27975],[36854],['en'],28,

## 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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).