Using Remote Programming Software:
- Browse to PANEL WIDE PARAMETERS/Phone, Auto-Forward and RAM Configuration.
- Double-click and select: Enable Supervision (System Trouble at CMD CTR).
Using Keypad Programming:
- Set Phone Line Fault Response Options, nibble 0220, to a non-zero value to enable phone line supervision; Check chart below to view nibble programming options.
![D6412 Phone Supervision Settings.png D6412 Phone Supervision Settings.png](https://community.boschsecurity.com/t5/image/serverpage/image-id/802i6B19F92DE76FDF2C/image-size/large?v=v2&px=999)
Select one of the following:
- (1) - Enable supervision
- (3) - Enable supervision, Burg alarm & strobe functions, All or part on
- (5)- Enable supervision, Burg alarm & strobe functions, off
- (7) - Enable supervision, Burg alarm & strobe functions, All or part on, and off
- When phone line supervision is enabled, the panel monitors for voltage. If voltage drops below 1 V for 40 seconds the panel declares a phone line fault.