RFC 1041 (rfc1041) - Page 2 of 6

Telnet 3270 regime option

Alternative Format: Original Text Document


RFC 1041               Telnet 3270 Regime Option            January 1988


      imbedded spaces should escape it with backslash character ('\').
      Backslash character imbedded into terminal type name should be
      escaped with another backslash character.

      Empty REGIME-LIST means, that sender is able to support only NVT
      ASCII terminal as defined in [4].

   IAC SB 3270-REGIME IS REGIME IAC SE

      Sender is stating the name of the terminal it is willing to
      support.  The code for IS is 0.

      REGIME is an ASCII string (possibly empty) which is substring of
      the received REGIME-LIST string.  Empty string means that the
      sender is willing to support only NVT ASCII terminal as defined in
      [4].

3.  Default

   WON'T 3270-REGIME

      3270 Regime will not be established.

   DON'T 3270-REGIME

      3270 Regime will not be established.

4.  Motivation for the option

   This option allows a telnet server running VM or MVS to negotiate
   with the telnet client on the type of data stream (3270 or NVT ASCII)
   which both sides are willing support.

   The main reason for this option is to allow simple and efficient way
   to:

      o state, that both client and server want to exchange 3270 data
        stream,

      o switch from 3270 Regime into NVT ASCII Regime and back into 3270
        Regime,

      o dynamically renegotiate 3270 Regime parameters (like terminal
        type).







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