Network Working Group                                        A. McKenzie
Request for Comments: 562                                      BBN-TENEX
NIC: 18638                                                28 August 1973
Updates: RFC 495
References: RFCs 513, 529


              Modifications to the TELNET Specification

  Almost four months have passed since the new TELNET Protocol
  specification was published.  Since then, only two RFCs have been
  issued suggesting modifications, and the most recent of these was
  distributed two months ago.  Further, the date from the old TELNET to
  the new TELNET (1 January 1974) is only four months away.  It
  therefore seems appropriate to officially modify the specification to
  account for the suggested modifications, and to declare a moratorium
  on the incorporation of additional suggestions until after the
  switchover. (Of course, no moratorium on the specification of
  additional options is required.)

  The two attached documents represent the revised TELNET Protocol
  specifications; they replace NIC #15372, TELNET Protocol
  Specification, and NIC #15373, TELNET Option Specifications.  The
  remainder of this RFC summarizes the changes.  Page numbers refer to
  the earlier documents.

Changes to TELNET Protocol Specification

  Page 8        - The phrase "blocked on input" is removed (see RFC
                  #513).

  Page 9, 10    - An additional use of IP is mentioned (see RFC #529).

  Page 10       - The explanation of AO is expanded (see RFC #513).

  Page 11       - The definition of "'print position' (e.g., an
                  overstrike)" is clarified (see RFC #513).

  Page 11, 12   - The description of the TELNET Synch Signal is
                  reworked to be in conformance with the ideas of RFC
                  #529 (also see RFC #513).

  Page 14       - The explanation of the CR-NUL convention is expanded
                  (see RFC #513).

  Page 16       - An additional command, End of Subnegotiation
                  Parameters (SE) is defined (see RFCs 513, 529).




A. McKenzie                                                     [Page 1]

RFC 562        Modifications to the TELNET Specification  28 August 1973


Changes to TELNET Option Specifications

  Pages 2, 3    - Use of the command SE is explained (see RFCs 513,
                  529).

  Page 3        - Doubling of IAC in subnegotiation parameters is
                  required (see RFC #513).


         [This RFC was put into machine readable form for entry]
     [into the online RFC archives by Helene Morin, Via Genie 12/99]








































A. McKenzie                                                     [Page 2]