Dph(4)-U( ) Etu; Description; Figure 5-37 Dph(4)-U( ) Etu - NEC ElectraElite 48 System Hardware Manual

Electra Elite
System Hardware Manual
5.3

DPH(4)-U( ) ETU

5.3.1

Description

The DPH(4)-U( ) ETU provides connection for four
Doorphones (DP-D-1A), and also provides the associated
four Door Lock Release relays.
Doorphones and relays are paired together. The station
user talking into a doorphone, controls only the Door Lock
Release relay for that doorphone when the feature code
is dialed.
The DPH(4)-U( ) has two audio paths to be shared by four
doorphones. Two simultaneous doorphone calls are
allowed. Doorphones 1/3 and 2/4 are paired together.

Figure 5-37 DPH(4)-U( ) ETU

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