DID (Direct Inward Dialing) Interface Unit. The direct inward dialing interface supports up to four DID or four 2-way DID lines. Immediate or wink start or delay dial signaling can be mixed on this ETU. NEC Electra Elite 48/192 DID(4)-U10 ETU Direct Inward Dial (750170)
The Direct Inward Dialing Interface supports up to four DID or four 2-way DID lines. Immediate, wink start, delay start, and second dial tone signaling are accommodated.
For use with the NEC Electra Elite 48/192 phone system.