RFC 158 · UNKNOWN · 1971
MON · 15 JUN 2026
Telnet Protocol: A Proposed Document
Overview
RFC 158, “Telnet Protocol: A Proposed Document”, is an Unknown document published in May 1971 by T.C. O'Sullivan. It updates RFC 139. It has since been updated by RFC 318. It has been obsoleted by RFC 495 — 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 158 is hosted at rfc-editor.org. Available in TXT,PDF,HTML.
Relationships to other RFCs
Other RFCs from 1971
- RFC 157 Invitation to the Second Symposium on Problems in the Optimization of Data Communications Systems
- RFC 156 Status of the Illinois site: Response to RFC 116
- RFC 160 RFC brief list
- RFC 155 ARPA Network mailing lists
- RFC 161 Solution to the race condition in the ICP
- RFC 154 Exposition Style
- RFC 162 NETBUGGER3
- RFC 153 SRI ARC-NIC status