TX series and all CTS units have the ability to launch calls from the SSH admin command line, as well as view call status. Simply log into the admin CLI and enter "call start " to start the call. "Show call status" will allow you to see negotiated bandwidth, resolution and other relevant call information.
For all commands and their functions (below is for TX 6.0 software, the commands are simillar throughout earlier versions):
http://www.cisco.com/en/US/partner/docs/telepresence/tx_sw/6_0/command_ref/tx_sw_cli_cmd_call.html
Thanks -
Tina
