# ISO/IEC 10173:1991 — Withdrawn and superseded ISO standards For ISO/IEC 10173:1991, item title is Information technology — Integrated Services Digital Network (ISDN) primary access connector at reference points S and T; status code is 9599; successor is ISO/IEC 10173:1998; withdrawn / published date is 1991-08-22, recorded from its source on 2026-08-05. - **Identifier:** ISO/IEC 10173:1991 _(verified: appears in the quote below)_ - **Item title:** Information technology — Integrated Services Digital Network (ISDN) primary access connector at reference points S and T _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO/IEC 10173:1998 - **Withdrawn / published date:** 1991-08-22 _(verified: appears in the quote below)_ ## What the source says > 18189,IS,,ISO/IEC 10173:1991,Information technology — Integrated Services Digital Network (ISDN) primary access connector at reference points S and T,Technologies de l'information — Connecteur d'accès primaire au RNIS aux points de référence S et T,1991-08-22,1,['35.100.10'],ISO/IEC JTC 1/SC 6,9599,,[29512],['en'],12, ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).