# ISO 22671:2007 — Withdrawn and superseded ISO standards

For ISO 22671:2007, item title is Space data and information transfer systems — Space link extension (SLE) — Forward communications link transmission unit (CLTU) service; status code is 9599; successor is ISO 22671:2011; withdrawn / published date is 2007-01-26, recorded from its source on 2026-08-05.

- **Identifier:** ISO 22671:2007 _(verified: appears in the quote below)_
- **Item title:** Space data and information transfer systems — Space link extension (SLE) — Forward communications link transmission unit (CLTU) service _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 22671:2011
- **Withdrawn / published date:** 2007-01-26 _(verified: appears in the quote below)_

## What the source says

> 43443,IS,,ISO 22671:2007,Space data and information transfer systems — Space link extension (SLE) — Forward communications link transmission unit (CLTU) service,Systèmes de transfert des données et informations spatiales — Extension de liaisons spatiales (SLE) — Service de l'unité de transmission pour la liaison d'envoi de télécommande (CLTU),2007-01-26,2,['49.140'],ISO/TC 20/SC 13,9599,[36396],[58052],['en'],149,"<p>ISO 22671:2007 defines the communications link transmission unit (CLTU) service in conformance with the transfer services specified in ISO 15396:1998. The forward CLTU service is a space link extension (SLE) transfer service that enables a mission to send communications link tra

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).