How to disable Call Waiting on D4412/D6412 Panels.

 If Phone Number 1 is programmed with a sequence to cancel call waiting (typically [*][7][0][P] followed by the phone number, program Phone 2 without the call waiting cancel sequence. If the subscriber cancels Call Waiting without notifying their alarm installing company, the control panel can still send reports using Phone 2. Dialing a call waiting sequence on a non-call waiting line prevents the system from dialing the central station receiver successfully.