-8     Specify  an 8-bit data path.  This causes an attempt to negotiate the TELNET BINARY option on both
       input and output.

-E     Stop any character from being recognized as an escape character.

-F     forward a forwardable copy of the local credentials to the remote system.

-K     Specify no automatic login to the remote system.

-L     Specify an 8-bit data path on output.  This causes the BINARY option to be negotiated on output.

-S tos Set the IP type-of-service (TOS) option for the telnet connection to the value tos, which can be a
       numeric  TOS  value  (in  decimal,  or a hex value preceded by 0x, or an octal value preceded by a
       leading 0) or, on systems that support it, a symbolic TOS name found in the /etc/iptos file.

-X atype
       Disable the atype type of authentication.

-a     Attempt automatic login.  This sends the user name via the USER variable of the ENVIRON option, if
       supported  by  the  remote  system.   The  name  used  is  that of the current user as returned by
       getlogin(2) if it agrees with the current user ID; otherwise it is the name  associated  with  the
       user ID.

-c     Disable  the  reading  of  the  user's .telnetrc file.  (See the toggle skiprc command on this man
       page.)

-d     Set the initial value of the debug flag to TRUE

-e escape char
       Set the initial telnet escape character to escape char.  If escape char  is  omitted,  then  there
       will be no escape character.

-f     forward a copy of the local credentials to the remote system.

-k realm
       If  Kerberos  authentication is being used, request that telnet obtain tickets for the remote host
       in realm realm instead of the remote host's realm, as determined by krb_realmofhost(3).

-l user
       If the remote system understands the ENVIRON option, then user will be sent to the  remote  system
       as  the  value for the variable USER.  This option implies the -a option.  This option may also be
       used with the open command.

-n tracefile
       Open tracefile for recording trace information.  See the set tracefile command below.

-r     Specify a user interface similar to rlogin(1).  In this mode, the escape character is set  to  the
       tilde (~) character, unless modified by the -e option.

-x     Turn  on  encryption  of the data stream.  When this option is turned on, telnet will exit with an
       error if authentication cannot be negotiated or if encryption cannot be turned on.

-output
       This is the same as the encrypt stop output command.

-a     Attempt automatic login.  This sends the user name via the USER  variable  of  the  ENVIRON
       option,  if  supported  by the remote system.  The name used is that of the current user as
       returned by getlogin(2) if it agrees with the current user ID; otherwise  it  is  the  name
       associated with the user ID.

[-l] user
       may  be  used  to  specify  the user name to be passed to the remote system via the ENVIRON
       option.

-port  When connecting to a non-standard port, telnet omits any  automatic  initiation  of  TELNET
       options.   When the port number is preceded by a minus sign, the initial option negotiation
       is done.