RFC 651 · UNKNOWN · 1974
TUE · 15 SEP 2026
Revised Telnet status option
Overview
RFC 651, “Revised Telnet status option”, is an Unknown document published in October 1974 by D. Crocker. It has been obsoleted by RFC 859 — refer to the newer document for the authoritative version. The canonical text is published by the RFC Editor.
What “Unknown” means
The standards-track status of this early RFC was never formally classified.
Read this RFC
The canonical text of RFC 651 is hosted at rfc-editor.org. Available in TXT,HTML.
Relationships to other RFCs
Other RFCs from 1974
- RFC 652 Telnet output carriage-return disposition option
- RFC 653 Telnet output horizontal tabstops option
- RFC 654 Telnet output horizontal tab disposition option
- RFC 647 Proposed protocol for connecting host computers to ARPA-like networks via front end processors
- RFC 655 Telnet output formfeed disposition option
- RFC 656 Telnet output vertical tabstops option
- RFC 645 Network Standard Data Specification syntax
- RFC 657 Telnet output vertical tab disposition option