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Telnet terminal speed option (RFC1079)

IP.com Disclosure Number: IPCOM000001888D
Original Publication Date: 1988-Dec-01
Included in the Prior Art Database: 2000-Sep-12
Document File: 3 page(s) / 4K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

C.L. Hedrick: AUTHOR

Abstract

Status of This Memo

This text was extracted from a ASCII Text document.
This is the abbreviated version, containing approximately 68% of the total text.

Network Working Group C. Hedrick

Request for Comments: 1079 Rutgers University

December 1988

Telnet Terminal Speed Option

Status of This Memo

This RFC specifies a standard for the Internet community. Hosts on

the Internet that exchange terminal speed information within the

Telnet protocol are expected to adopt and implement this standard.

Distribution of this memo is unlimited.

This standard is modelled on RFC 930 [1], the telnet terminal type

option. Much of the text of this document is copied from that RFC.

Motivation

Most operating systems have provisions to keep track of the speed

(bit rate) of directly attached terminals and modems. This

information is used to control various timing-dependent display

processes, e.g., the number of padding characters used for delay.

Some software also has user interfaces that are tuned differently for

fast and slow terminals. The purpose of this option is to provide

similar information for telnet connections.

1. Command Name and Code

TERMINAL-SPEED

Code = 32

2. Command Meanings

IAC WILL TERMINAL-SPEED

Sender is willing to send terminal speed information in a

subsequent sub-negotiation.

IAC WON'T TERMINAL-SPEED

Sender refuses to send terminal speed information.

IAC DO TERMINAL-SPEED

Sender is willing to receive terminal speed information in a

subsequent sub-negotiation.

IAC DON'T TERMINAL-SPEED

Sender refuses to accept terminal speed information.

IAC SB TERMINAL-SPEED SEND IAC SE

Sender requests receiver to transmit his (the receiver's)

terminal speed. The code for SEND is 1. (See below.)

IAC SB TERMINAL-SPEED IS ... IAC SE

Sender is stating his terminal speed. The code for IS is 0.

(See below.)

3. Default

WON'T TERMINAL-SPEED

Terminal speed information will not be exchanged.

DON'T TERMINAL-SPEED

Terminal speed information will not be exchanged.

4. Description of the Option

WILL and DO are used only to obtain and grant permission for future

discussion. The actual exchange of status information occurs within

option subcommands (IAC SB TERMINAL-SPEED...).

Once the two hosts have exchanged a WILL and a DO, the sender of the

DO TERMINAL-SPEED is free to request speed information. Only the

sender of the DO may send requests (IAC SB TERMINAL-SPEED SEND IAC

SE) and only the sender of the WILL may transmit actual speed

information (within an IAC SB TERMINAL-SPEED IS ... IAC SE command).

Terminal speed information may not be sent spontaneously, but only in

response to a request.

The terminal speed information is an NVT ASCII string. This string

contains the decimal representation of the transmit and receive

speeds of the terminal, separated by a comma, e.g.,

9600,100

No le...