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Issue 6
5 - 112
6.4.2
Installation
Install only one ECR-U( ) in slots S3~S6.
6.4.3
LED Indications
Live LED indications are listed below.
Blinking Red
Steady Red
Off
Busy LED indications are listed below.
Steady Red
Off
6.4.4
Connectors
Refer to
Table 5-55 Connector Descriptions (CN2)
Figure 5-61 ECR-U( )
CN1
CN2
CN3
CN4
Table 5-55 Connector Descriptions (CN2)
Pin Number
Normal Operation
Operation Stopped (power on
No Power
Some Relays Busy
All Relays Idle
ETU.
Connects to the Backboard
Relay Contacts for Relays 11 and 12
Both-way
Audio
External Paging
Audio output for Tone Ringer and Night
Chime
Description
13~16
Not Used
12
Relay #1 General Purpose
11
10
Relay #0 General Purpose
9
5~8
Not Used
4
Zone Paging Audio Input
3
2
External Paging BGM input
1
Installing Electronic Telephone Units
Electra Elite
and
Connection
for
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