$ telnet -l [username] [remote machine IP] [port (optional)]
To connect to the device with specific IP address
$ telnet 192.168.122.105
To quit the connected machine
$ logout
To connect remote server with user and port number
$ telnet -l remote_user 192.168.122.105 3000
To connect to the telnet shell
$ telnet
telnet>
To print help options
$ telnet
telnet > h
To exit the telnet shell
telnet > quit
regards,
T.Dhanasekar