To add an extension module, simply click “Add”. Navigate to the correct EXT tab to configure the soft keys of the extension module. Multiple extension modules can be added to handsets that support them.
Note: Applying any changes to Managed SIP Devices from the Com.X GUI will cause the handset to reboot. The device will reboot,and then update configuration upon startup. This process results in the phone being unavailable for around one minute after a Review/Apply.