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Contact Closure

How do i utilize a SNOM PA1 and the wiring pig tails in order to do a contact closure?

1 Comment

Dear John,

you can simulate the phone's keypad shorting this pins of the keyboard connector

 Dial Pad Key   PIN  PIN
0 2 3
1 6
6 1
7 6
8 5
9 7 0

An example could be a door phone application:

Key 6 and 7 control Dial Pad Key 1, see also PA-1 Keyboard Matrix
Connect Key 6 and 7 to the Door Phone Call Button
From the PA-1 Web User Interface, configure a Speed Dial to an internal Extension and assign it to Dial Pad Key 1
Alternatively, you can use any combination of keys or single Dial Pad Key:


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