RFC 804 · UNKNOWN · 1981
MON · 15 JUN 2026
CCITT draft recommendation T.4
Overview
RFC 804, “CCITT draft recommendation T.4”, is an Unknown document published in January 1981 by International Telegraph and Telephone Consultative Committee of the International Telecommunication Union. The canonical text is published by the RFC Editor.
Abstract
This is the CCITT standard for group 3 facsimile encoding. This is useful for data compression of bit map data.
What “Unknown” means
The standards-track status of this early RFC was never formally classified.
Read this RFC
The canonical text of RFC 804 is hosted at rfc-editor.org. Available in TXT,HTML.
Other RFCs from 1981
- RFC 803 Dacom 450/500 facsimile data transcoding
- RFC 802 ARPANET 1822L Host Access Protocol
- RFC 806 Proposed Federal Information Processing Standard: Specification for message format for computer based message systems
- RFC 801 NCP/TCP transition plan
- RFC 799 Internet name domains
- RFC 798 Decoding facsimile data from the Rapicom 450
- RFC 797 Format for Bitmap files
- RFC 796 Address mappings