# ISO 3309:1991 — Withdrawn and superseded ISO standards

For ISO 3309:1991, item title is Information technology — Telecommunications and information exchange between systems — High-level data link control (HDLC) procedures — Frame structure; status code is 9599; successor is ISO/IEC 3309:1993; withdrawn / published date is 1991-06-13, recorded from its source on 2026-08-05.

- **Identifier:** ISO 3309:1991 _(verified: appears in the quote below)_
- **Item title:** Information technology — Telecommunications and information exchange between systems — High-level data link control (HDLC) procedures — Frame structure _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO/IEC 3309:1993
- **Withdrawn / published date:** 1991-06-13 _(verified: appears in the quote below)_

## What the source says

> 8559,IS,,ISO 3309:1991,Information technology — Telecommunications and information exchange between systems — High-level data link control (HDLC) procedures — Frame structure,Technologies de l'information — Télécommunications et échange d'information entre systèmes — Procédure de commande de liaison de données à haut niveau (HDLC) — Structure de trame,1991-06-13,4,['35.100.20'],ISO/IEC JTC 1/SC 6,9599,[8558],[8561],['en'],7,

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).