Did(4)-U( ) Etu; Description; Figure 5-23 Did(4)-U( ) Etu - NEC ElectraElite 48 System Hardware Manual

Electra Elite
System Hardware Manual
4.7

DID(4)-U( ) ETU

4.7.1

Description

The DID(4)-( ) interfaces Direct Inward Termination lines
and 2-way DID lines. This ETU provides a maximum of
four DID lines. Wink start, delay start, immediate start,
and second Dial Tone are accommodated with this ETU.
Dial Pulse and DTMF are also supported. There are four
built-in DTMF signal detectors. Tip and Ring electrical
fuses are provided to comply with UL 1459 requirements.

Figure 5-23 DID(4)-U( ) ETU

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