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+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.
+
+
+
+
+
+
+Hedrick                                                         [Page 1]
+
+RFC 1079              Telnet Terminal Speed Option         December 1988
+
+
+      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
+
+
+
+Hedrick                                                         [Page 2]
+
+RFC 1079              Telnet Terminal Speed Option         December 1988
+
+
+   No leading zeros may be included.  No extraneous characters such as
+   spaces may be included.
+
+      The following is an example of use of the option:
+
+         Host1: IAC DO TERMINAL-SPEED
+
+         Host2: IAC WILL TERMINAL-SPEED
+
+      (Host1 is now free to request status information at any time.)
+
+         Host1: IAC SB TERMINAL-SPEED SEND IAC SE
+
+         Host2: IAC SB TERMINAL-SPEED IS "1200,1200" IAC SE
+
+      (This command is 15 octets.)
+
+5. Implementation Suggestions
+
+   Many systems allow only certain discrete terminal speeds.  In such
+   cases it is possible that a speed may be received that does not match
+   one of the allowed values.  We suggest that you pick the nearest
+   speed that is allowed, rounding in a "safe" direction.  Safety will
+   depend upon the use of the speed information.  If it is being used
+   for padding, it is best to round up, since too much padding is better
+   than too little.
+
+Reference
+
+   [1]  Solomon, M., and Wimmers, E., "Telnet Terminal Type Option",
+        RFC 930, January, 1985
+
+[AAuthor's Address:
+
+   Charles Hedrick
+   Rutgers University
+   Center for Computer and Information Services
+   Hill Center, Busch Campus
+   P.O. Box 879
+   Piscataway, NJ 08855-0879
+
+   Phone: (201) 932-3088
+
+   Email: HEDRICK@ARAMIS.RUTGERS.EDU
+
+
+
+
+
+
+
+Hedrick                                                         [Page 3]
+
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