1. Verify the phone line voltage reads at least 6VDC when measuring voltage across Tip & Ring or 10ma when measuring current in series with either side of the phone line.
2. Verify proper phone number entry.
3. Verify the programmed reporting format is compatible with the receiver. For example, if the receiver only provides Contact ID ACK tones, then the control panel’s reporting format must be set as Contact ID.
4. Monitor the panel phone line while it sends a report.
Alarm panels require precise timing between DTMF tones or pulses during communication. The characteristics of IP based phone systems (e.g. latency, codecs, etc.) may impact this timing and cause the communication to fail. Because the existing telephone system is increasingly transitioning from POTS (Plain Old Telephone System) to an internet based system, it may be difficult to know if an IP based phone system is used.