The Telex Legacy wireless intercom system incorporates the option of three audio channels that are selectable at each XO-1 beltpack. The XO-1 beltpacks also provide the user independent volume control and headset microphone level control.

The XO-AP base station automatically selects the RF (radio frequency) channel for communication with a feature called ClearScan. ClearScan is initiated at power up and automatically scans and sets the Telex Legacy base station to the best and clearest RF channel (1 – 11) for operation.