# ISO 7776:1986/Cor 3:1991 — Withdrawn and superseded ISO standards

For ISO 7776:1986/Cor 3:1991, item title is Information processing systems — Data communications — High-level data link control procedures — Description of the X.25 LAPB-compatible DTE data link procedures — Technical Corrigendum 3; status code is 9599; successor is ISO/IEC 7776:1995; withdrawn / published date is 1991-03-01, recorded from its source on 2026-08-05.

- **Identifier:** ISO 7776:1986/Cor 3:1991 _(verified: appears in the quote below)_
- **Item title:** Information processing systems — Data communications — High-level data link control procedures — Description of the X.25 LAPB-compatible DTE data link procedures — Technical Corrigendum 3 _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO/IEC 7776:1995
- **Withdrawn / published date:** 1991-03-01 _(verified: appears in the quote below)_

## What the source says

> 14656,IS,Cor,ISO 7776:1986/Cor 3:1991,Information processing systems — Data communications — High-level data link control procedures — Description of the X.25 LAPB-compatible DTE data link procedures — Technical Corrigendum 3,Téléinformatique — Procédures de commande de liaison de données à haut niveau — Description des procédures de liaison d'équipement terminal de transmission de données ETTD compatible X.25 LAPB — Rectificatif technique 3,1991-03-01,1,['35.100.20'],ISO/IEC JTC 1/SC 6,9599,,[22172],"['en','fr']",1,

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).