Specifications

46
Operation
1. DC voltage is supervised and if it is detected the dial tone is monitored.
2. If the phone lines are equipped with a house phone with proper connection and is in use
the supervision is suspended until the house phone is ON-HOOK again.
3. If there is an event to be reported in the dialer queue and the house phone is in use the
dialer tries the second line to report the event.
4. if that line’s house phone is also in use the dialer seizes the line. The dialer disconnects
the house phone and reports the event to the central monitoring station.