RFC 1340		    Assigned Numbers		       July 1992


				TELNET OPTIONS

The Telnet Protocol has	a number of options that may be	negotiated.
These options are listed here.	"IAB Official Protocol Standards" [62]
provides more detailed information.

   Options  Name					      References
   -------  -----------------------			      ----------
      0	    Binary Transmission				       [110,JBP]
      1	    Echo					       [111,JBP]
      2	    Reconnection					[42,JBP]
      3	    Suppress Go	Ahead				       [114,JBP]
      4	    Approx Message Size	Negotiation		       [133,JBP]
      5	    Status					       [113,JBP]
      6	    Timing Mark					       [115,JBP]
      7	    Remote Controlled Trans and	Echo		       [107,JBP]
      8	    Output Line	Width					[40,JBP]
      9	    Output Page	Size					[41,JBP]
     10	    Output Carriage-Return Disposition			[28,JBP]
     11	    Output Horizontal Tab Stops				[32,JBP]
     12	    Output Horizontal Tab Disposition			[31,JBP]
     13	    Output Formfeed Disposition				[29,JBP]
     14	    Output Vertical Tabstops				[34,JBP]
     15	    Output Vertical Tab	Disposition			[33,JBP]
     16	    Output Linefeed Disposition				[30,JBP]
     17	    Extended ASCII				       [136,JBP]
     18	    Logout						[25,MRC]
     19	    Byte Macro						[35,JBP]
     20	    Data Entry Terminal				    [145,38,JBP]
     22	    SUPDUP					     [26,27,MRC]
     22	    SUPDUP Output					[51,MRC]
     23	    Send Location				       [68,EAK1]
     24	    Terminal Type				      [128,MS56]
     25	    End	of Record				       [103,JBP]
     26	    TACACS User	Identification				 [1,BA4]
     27	    Output Marking				       [125,SXS]
     28	    Terminal Location Number				[84,RN6]
     29	    Telnet 3270	Regime				       [116,JXR]
     30	    X.3	PAD					       [70,SL70]
     31	    Negotiate About Window Size			     [139,DW183]
     32	    Terminal Speed				       [57,CLH3]
     33	    Remote Flow	Control				       [58,CLH3]
     34	    Linemode						[9,DB14]
     35	    X Display Location				       [75,GM23]
     36	    Environment	Option					  [DB14]
     37	    Authentication Option				  [DB14]
     38	    Encryption Option					  [DB14]
    255	    Extended-Options-List			       [109,JBP]



Reynolds & Postel				               [Page 75]

RFC 1340		    Assigned Numbers		       July 1992


				 DOCUMENTS


   [1]	  Anderson, B.,	"TACACS	User Identification Telnet Option",
	  RFC-927, BBN,	December 1984.

   [9]	  Borman, D., Editor, "Telnet Linemode Option",
	  RFC 1116, Cray Research, Inc., August	1989.

   [25]	  Crispin, M., "Telnet Logout Option", Stanford	University-AI,
	  RFC-727, April 1977.

   [26]	  Crispin, M., "Telnet SUPDUP Option", Stanford	University-AI,
	  RFC-736, October 1977.

   [27]	  Crispin, M., "SUPDUP Protocol", RFC-734, NIC 41953,
	  October 1977.

   [28]	  Crocker, D., "Telnet Output Carriage-Return Disposition
	  Option", RFC-652, October 1974.

   [29]	  Crocker, D., "Telnet Output Formfeed Disposition Option",
	  RFC-655, October 1974.

   [30]	  Crocker, D., "Telnet Output Linefeed Disposition", RFC-658,
	  October 1974.

   [31]	  Crocker, D., "Telnet Output Horizontal Tab Disposition
	  Option", RFC-654, October 1974.

   [32]	  Crocker, D., "Telnet Output Horizontal Tabstops Option",
	  RFC-653, October 1974.

   [33]	  Crocker, D., "Telnet Output Vertical Tab Disposition Option",
	  RFC-657, October 1974.

   [34]	  Crocker, D., "Telnet Output Vertical Tabstops	Option",
	  RFC-656, October 1974.

   [35]	  Crocker, D. and R. Gumpertz, "Revised	Telnet Byte Marco
	  Option", RFC-735, November 1977.

   [38]	  Day, J., "Telnet Data	Entry Terminal Option",	RFC-732,
	  September 1977.

   [40]	  DDN Protocol Handbook, "Telnet Output	Line Width Option",
	  NIC 50005, December 1985.

   [41]	  DDN Protocol Handbook, "Telnet Output	Page Size Option",
	  NIC 50005, December 1985.

   [42]	  DDN Protocol Handbook, "Telnet Reconnection Option",
	  NIC 50005, December 1985.

   [51]	  Greenberg, B., "Telnet SUPDUP-OUTPUT Option",	RFC-749,
	  MIT-Multics, September 1978.

   [57]	  Hedrick, C., "Telnet Terminal	Speed Option", RFC-1079,
	  Rutgers University, December 1988.

   [58]	  Hedrick, C., "Telnet Remote Flow Control Option",
	  RFC-1080, Rutgers University,	December 1988.

   [68]	  Killian, E., "Telnet Send-Location Option", RFC-779,
	  April	1981.

   [70]	  Levy,	S., and	T. Jacobson, "Telnet X.3 PAD Option", RFC-1053,
	  Minnesota Supercomputer Center, April	1988.

   [75]	  Marcy, G., "Telnet X Display Location	Option", RFC-1096,
	  Carnegie Mellon University, March 1989.

   [84]	  Nedved, R., "Telnet Terminal Location	Number Option",	RFC-946,
	  Carnegie-Mellon University, May 1985.

   [103]  Postel, J., "Telnet End of Record Option", RFC-885,
	  Information Sciences Institute, December 1983.

   [107]  Postel, J. and D. Crocker, "Remote Controlled	Transmission and
	  Echoing Telnet Option", RFC-726, March 1977.

   [109]  Postel, J. and J. Reynolds, "Telnet Extended Options - List
	  Option", RFC-861, Information	Sciences Institute, May	1983.

   [110]  Postel, J. and J. Reynolds, "Telnet Binary Transmission",
	  RFC-856, Information Sciences	Institute, May 1983.

   [111]  Postel, J. and J. Reynolds, "Telnet Echo Option", RFC-857,
	  Information Sciences Institute, May 1983.

   [112]  Postel, J., and J. Reynolds, "Telnet Protocol	Specification",
	  RFC-854, Information Sciences	Institute, May 1983.

   [113]  Postel, J. and J. Reynolds, "Telnet Status Option", RFC-859,
	  Information Sciences Institute, May 1983.

   [114]  Postel, J. and J. Reynolds, "Telnet Suppress Go Ahead	Option",
	  RFC-858, Information Sciences	Institute, May 1983.

   [115]  Postel, J. and J. Reynolds, "Telnet Timing Mark Option",
	  RFC-860, Information Sciences	Institute, May 1983.

   [116]  Rekhter, J., "Telnet 3270 Regime Option", RFC-1041,
	  IBM, January 1988.

   [125]  Silverman, S., "Output Marking Telnet	Option", RFC-933, MITRE,
	  January 1985.

   [128]  Solomon, M., and E. Wimmers, "Telnet Terminal	Type Option",
	  RFC-930, Supercedes RFC-884, University of Wisconsin,	Madison,
	  January 1985.

   [136]  Tovar, "Telnet Extended ASCII	Option", RFC-698, Stanford
	  University-AI, July 1975.

   [139]  Waitzman, D.,	"Telnet	Window Size Option", RFC-1073,
	  BBN STC, October, 1988.

   [145]  Yasuda, A., and T. Thompson, "TELNET Data Entry Terminal
	  Option DODIIS	Implementation", RFC 1043, DIA,	February 1988.
