- NEC 8ATRU 8 port analog trunk PCB- Supports 8 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 IDNEC80011B