G/01141C
Edition 1
27/04/2012
MD-4931CFA Handbook
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Operator Handbook for CFA Door Phone G/01141C Issue 1 Page
9
3.9
How to Change Your PIN
1.
Set the ‘AUTO-ANSWER’ jumper in the unit to ON. (This is the factory default setting).
2.
Dial up the Door Phone from an independent telephone and wait for it to answer with a pip
tone.
3.
Press *
4.
Enter the current PIN (normally none).
5.
Press 1.
6.
Enter the new PIN (four digits,
or no digits if no PIN is required
)
7.
Press # to store the new PIN number, and a confirmation tone is heard.
Summary <* [PIN] 1 pppp…#>
3.10 Automatic
Disconnect
The MD-4931CFA will disconnect the telephone line if:
Four busy tones are detected.
DTMF *9 is detected.
Loop current loss or line reversal is detected
The push button is pressed and a new call is automatically established.
30 seconds of silence on the line side is detected.
Total call time limit has elapsed.
3.11 Dial (Long) Tone Disconnect
(3 seconds default)
Some telephone systems provide dial tone or long tones as the disconnect signal. The MD-
4931CFA may be programmed to disconnect after 1 second to 255 seconds of continuous tone
(two seconds minimum is recommended).
Summary <* [PIN] 603 t…#>, where t = 1
255 (or 0 = off) seconds. (ie. enter a value of
the seconds required or enter 0 to turn this feature off).
3.12 Door Latch/Relay Output Closure Timer
(5 seconds default)
The door latch and voltage free relay output normally stay closed (or open) for five seconds when
activated by the person receiving a door phone call. The closure (or open) timer can be adjusted
from 1 second to 255 seconds.
Summary <* [PIN] 602 t…#>, where t = 1
255 seconds (ie. enter a value of the seconds).
3.13 Master
Reset
You can reset all user programmed information back to the factory default condition.
Press *699# after answer.
Take care not to unintentionally enter this command!!!
