RFC 660 · UNKNOWN · 1974
MON · 15 JUN 2026
Some changes to the IMP and the IMP/Host interface
Overview
RFC 660, “Some changes to the IMP and the IMP/Host interface”, is an Unknown document published in October 1974 by D.C. Walden. The canonical text is published by the RFC Editor.
Abstract
Decoupling of message number sequences of hosts; host-host access control; message number window; messages outside normal mechanism; see also BBN 1822.
What “Unknown” means
The standards-track status of this early RFC was never formally classified.
Read this RFC
The canonical text of RFC 660 is hosted at rfc-editor.org. Available in TXT,HTML.
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- RFC 656 Telnet output vertical tabstops option
- RFC 655 Telnet output formfeed disposition option