The TCI session require authentication, after connect open you have to enter username, and password, after that you can use TCI commands for see list of active users on network devices, see list of network devices and it's status, drop user from all devices, clear port on specifyed device. All output from tacppd will have form: ``#:\tresponse''. But \t this is TAB (\t). I will write response in form ``#: Ok'', but you should know, that space after ``#:'' - this is TABulation. Also every responce will ended with symbols \r\n, but i will not write it in examples. In every session you can send many commands. Also you can have TCI session opened for a long time.