# ISO 22671:2005 — Withdrawn and superseded ISO standards

For ISO 22671:2005, item title is Space data and information transfer systems — Space link extension (SLE) — Forward command link transmission unit (CLTU); status code is 9599; successor is ISO 22671:2007; withdrawn / published date is 2005-06-15, recorded from its source on 2026-08-05.

- **Identifier:** ISO 22671:2005 _(verified: appears in the quote below)_
- **Item title:** Space data and information transfer systems — Space link extension (SLE) — Forward command link transmission unit (CLTU) _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 22671:2007
- **Withdrawn / published date:** 2005-06-15 _(verified: appears in the quote below)_

## What the source says

> 36396,IS,,ISO 22671:2005,Space data and information transfer systems — Space link extension (SLE) — Forward command link transmission unit (CLTU),Systèmes de transfert des données et informations spatiales — Extension de liaisons spatiales (SLE) — Unité de transmission pour la liaison d'envoi de télécommande (CLTU),2005-06-15,1,['49.140'],ISO/TC 20/SC 13,9599,,[43443],['en'],141,<p>ISO 22671:2005 specifies the forward command link transmission unit (CLTU) that may be provided by a space link extension (SLE) system for inter-agency cross support. The CLTU service is an SLE transfer service that enables a mission to send CLTUs to a spacecraft.</p>

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).