Line Cut Indication (Optional Feature)
What it means: The telephone service to the security system has been interrupted. The system cannot send an
alarm signal to ADT’s Customer Monitoring Centers.
What you’ll notice: Less than one minute after the line cut occurs, the siren sounds or the keypad beeps, depending
on whether the system is on or off.
1. To silence the keypad’s beeping, press the CANCEL key.
2. If the siren is sounding, silence it by entering your keypad code.
3. Check your telephone for a dial tone. If there is no telephone service,
contact your telephone company.
4. If there is a dial tone, ensure that the system’s telephone cable is
securely plugged into the telephone jack. If it is not, plug it in.
5. If the cable is plugged in, call the ADT Customer Monitoring team at
800.445.0872. We are available to help you 24 hours a day, seven
days a week.
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