RFC 139 · UNKNOWN · 1971
MON · 15 JUN 2026
Discussion of Telnet Protocol
Overview
RFC 139, “Discussion of Telnet Protocol”, is an Unknown document published in May 1971 by T.C. O'Sullivan. It updates RFC 137. It has since been updated by RFC 158. 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 139 is hosted at rfc-editor.org. Available in TXT,HTML.
Relationships to other RFCs
Other RFCs from 1971
- RFC 138 Status report on proposed Data Reconfiguration Service
- RFC 140 Agenda for the May NWG meeting
- RFC 137 Telnet Protocol - a proposed document
- RFC 141 Comments on RFC 114: A File Transfer Protocol
- RFC 136 Host accounting and administrative procedures
- RFC 142 Time-Out Mechanism in the Host-Host Protocol
- RFC 135 Response to NWG/RFC 110
- RFC 143 Regarding proffered official ICP