- NEC 4ATRU 4 port analog trunk PCB
- Supports 4 analog loop start CO trunks
- Mode switch for taking the PCB out of service
- Status LED indicating proper PCB operation
- Port activity LED that indicates traffic on the PCB
- 2 Power failure cut through circuits
- Upon failure of commercial AC power, PCB automatically cuts through 2 trunk circuits to 2 power failure telephones
- Built-in caller ID
NEC80010B
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