RFC 2217 (rfc2217) - Page 1 of 14
Telnet Com Port Control Option
Alternative Format: Original Text Document
Network Working Group G. Clark
Request for Comments: 2217 Cisco Systems, Inc.
Category: Experimental October 1997
Telnet Com Port Control Option
Status of this Memo
This memo defines an Experimental Protocol for the Internet
community. This memo does not specify an Internet standard of any
kind. Discussion and suggestions for improvement are requested.
Distribution of this memo is unlimited.
Introduction
This memo proposes a protocol to allow greater use of modems attached
to a network for outbound dialing purposes.
Table of Contents
1. Negotiation of the Com Port
Control Option Protocol .................. 5
2. Com Port Configuration Commands .................. 6
Version
Baud Rate
Data Bit Size
Parity
Stop Bit size
3. Special Com Port Control Commands ................. 8
XON/XOFF Flow Control
HARDWARE Flow Control
BREAK Signal
DTR Signal
RTS Signal
4. Notification of Com Port and .................. 12
Modem Line Changes
5. Flow Control .................. 13
6. Security Considerations .................. 13
7. Author's Address .................. 14
8. Reference Section .................. 14
Discussion
The Telnet protocol defines an interactive, character-oriented
communications session. It was originally designed to establish a
session between a client and a remote login service running on a host
[5].
Clark Experimental