Pinouts
Base Station rear connectors
Click/touch image to enlarge/minimize
DECT SYNC (connector E)
| Sync In | Sync Out | |
|---|---|---|
| Pin 1 | DECTSYNC + | DECTSYNC + |
| Pin 2 | DECTSYNC - | DECTSYNC - |
| Pin 3 | 8 KHZ+ | 8 KHZ+ |
| Pin 6 | 8 KHZ- | 8 KHZ- |
Partyline (connectors F)
| Pin | Description |
|---|---|
| Pin 1 | Ground (shield) |
| Pin 2 | Power |
| Pin 3 | Audio |
GPIO (connector K)
Click/touch image to enlarge/minimize 
| Pin | Description |
|---|---|
| Pin 1 | Relay 1 COM |
| Pin 2 | Relay 1 NC |
| Pin 3 | Relay 1 NO |
| Pin 4 | Relay 2 COM |
| Pin 5 | Relay 2 NC |
| Pin 6 | Relay 2 NO |
| Pin 7 | Input 1 (Ground to activate) |
| Pin 8 | GND |
| Pin 9 | Relay 3 COM |
| Pin 10 | Relay 3 NC |
| Pin 11 | Relay 3 NO |
| Pin 12 | Relay 4 COM |
| Pin 13 | RELAY 4 NC |
| Pin 14 | RELAY 4 NO |
| Pin 15 | Input 2 (Ground to activate) |