User manual

13FX 250 / FX 500 User Manual
The wired Primary Handset has a colour LCD and keypad for making and receiving voice
calls and sending SMS using an interface similar with a mobile phone. It can serve as a
remote access for user to access various BDU funcī†Ÿons. The Primary Handset connector
is plugged into the BDU primary handset port and it is powered directly from the BDU.
3.1.3 Primary Handset