telnet [options] [host [port]]Communicate with another host using the Telnet protocol. host may be either a name or a numeric Internet address (dot format). telnet has a command mode (indicated by the telnet> prompt) and an input mode (usually a login session on the host system).  If no host is given, telnet defaults to command mode. You can also enter command mode from input mode by  typing the escape character ^]. In command mode, type ? or help to list the available commands.
Solaris telnet provides these options:
-8Use an 8-bit data path. This negotiates the BINARY option for input and output.
-cDon't read $HOME/.telnetrc at startup.
-dSet the debug option to true.
-e cUse c as the escape character. The default is ^]. A null value disables the escape character mechanism.
-EDon't have an escape character.
-l userUse the ENVIRON option to pass the value of the USER environment variable.
-LUse an 8-bit data path on output. This negotiates the BINARY option only for output.
-n fileRecord trace information in file.
-rProvide an rlogin-style interface, in which the escape character is ~ and is only recognized after a carriage return. The regular telnet escape character must still be used before a telnet command. "~. Return" and "~ ^Z" terminates or stops a session, respectively. This feature may change in future versions of Solaris.