# ISO/IEC 15991:1998 — Withdrawn and superseded ISO standards

For ISO/IEC 15991:1998, item title is Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network —  Specification, functional model and information flows — Call priority interruption and call priority interruption protection supplementary services; status code is 9599; successor is ISO/IEC 15991:2003; withdrawn / published date is 1998-12-20, recorded from its source on 2026-08-05.

- **Identifier:** ISO/IEC 15991:1998 _(verified: appears in the quote below)_
- **Item title:** Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network —  Specification, functional model and information flows — Call priority interruption and call priority interruption protection supplementary services _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO/IEC 15991:2003
- **Withdrawn / published date:** 1998-12-20 _(verified: appears in the quote below)_

## What the source says

> 29668,IS,,ISO/IEC 15991:1998,"Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Specification, functional model and information flows — Call priority interruption and call priority interruption protection supplementary services","Technologies de l'information — Télécommunications et échange d'information entre systèmes — Réseau privé à intégration de services — Spécification, modèle fonctionnel et flux d'informations — Services supplémentaires d'interruption de priorité d'appel et de protection d'interruption de priorité d'appel",1998-12-20,1,['33.040.35'],ISO/IEC JTC 1/SC 6,9599,,[36856],['en'],42,

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).