VR3G-1 and VR3G-1P Board Connectors
From Zenitel Wiki
| Item | Description | Comment |
| 1 | CPU Module | . |
| 2 | Tamper Switch | Connected to input #4 |
| 3 | Relay | Double Throw relay contact with 60W switching power. COM, NO, NC contacts are provided. Max: 250VAC/220VDC, 2A, 60W. |
| 4 | I/O interface | 6 general purpose I/Os. Each I/O can be configured either as an input or 12mA LED driver output |
| 5 | Line Output | Balanced 600 ohm audio line out. Suitable for e.g. external induction loop amplifier |
| 6 | Power Input | Optional 24VDC power input from external power supply |
| 7 | LAN Port | 10/100/1000Mbps RJ-45 port connecting to Ethernet. PoE/PoE+ is supported. |