Nortel Millennium Phone: Intrusion detector
There is a small circuit mounted on the side of the chassis that connects to power, phone line and several switches.
This connects to the main board via 16 pin ribbon cable.
- 1: Unknown
- 2: Ground
- 3: Unknown
- 4: Vcc +5v (maybe for intrusion switches only)
- 5: Unknown
- 6: Ground
- 7: unlock detection, Upper chamber
- 8: cashbox removed detector
- 9: unlock detection, Lower chamber
- 10: Unknown
- 11: Ground
- 12: unknown, conected to pin 1 on transformer QHP25YA1
- 13: unknown, conected to pin 2 on transformer QHP25YA1
- 14: Ground
- 15: Tel Line Ring
- 16: Tel Line Tip
The intrusion sensors appear to be connected to ground normally, and connect to
+5V when the fault occurs.
