Intellian FB500 - Page 15

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3.3 Primary Handset
The wired Primary Handset has a colour LCD and keypad for making and receiv-
ing 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 functions. The
Primary Handset connector is plugged into the BDU primary handset port and it is
powered directly from the BDU.