The telnet command allows you to make an outbound telnet connect from the
mailbox regardless of the method used to access the mailbox. This would
allow a 'vanilla' AX25 user on a TNC to switch into the Tcp/Ip network.
The format is 'T <host-name>' and the session may be terminated by the 
use of the configurable escape key. CRTL-X is the default.
