# ISO 21217:2010 — Withdrawn and superseded ISO standards For ISO 21217:2010, item title is Intelligent transport systems — Communications access for land mobiles (CALM) — Architecture; status code is 9599; successor is ISO 21217:2014; withdrawn / published date is 2010-04-01, recorded from its source on 2026-08-05. - **Identifier:** ISO 21217:2010 _(verified: appears in the quote below)_ - **Item title:** Intelligent transport systems — Communications access for land mobiles (CALM) — Architecture _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 21217:2014 - **Withdrawn / published date:** 2010-04-01 _(verified: appears in the quote below)_ ## What the source says > 50507,IS,,ISO 21217:2010,Intelligent transport systems — Communications access for land mobiles (CALM) — Architecture,Systèmes intelligents de transport — Accès aux communications des services mobiles terrestres (CALM) — Architecture,2010-04-01,1,"['35.240.60','03.220.01']",ISO/TC 204,9599,,[61570],['en'],38,"

ISO 21217:2010 specifies the architectural communications framework of “Intelligent Transport Systems” (ITS) for the family of CALM-related International Standards. The architecture is described in an abstract way with several graphical views and examples. The graphical representations partly follow the ISO Open Systems Interconnection (OSI) principles. In addition to the requirement ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).