USB COM port interface for connection to PC. - LED indicators for power, ring, hook, and tone detection. - Fully RFI proofed. - USB bus powered. - Up to four Telco Sentinels may be rack mounted on one RA-1, 1-RU rack shelf. . . .

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USB COM port interface for connection to PC.
– LED indicators for power, ring, hook, and tone detection.
– Fully RFI proofed.
– USB bus powered.
– Up to four Telco Sentinels may be rack mounted on one RA-1, 1-RU rack shelf.

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