Configuring a Reverse-Telnet Session

Router#telnet [host] [port] [/debug]

You can specify the target host either by host name or by IP address. You can use the optional debug switch to obtain more-detailed information about the connection. If you simply enter the name of the host to which you want to make a connection, the system tries to establish a Telnet session with that host by default. The interface through which the connection is made provides the source IP address for the connection.

You use the disconnect command to cut off a particular session or all sessions:

Router#disconnect [session-number]

Also, you can put the current session on hold by pressing Ctrl-Shift-6 followed by x.