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NEC Australia Pty Ltd
Xen Master & Xen Axis
5 - 132
Installing Electronic Telephone Units
A6-3
240
00-6
42-
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4.5.4
LED Indications
Live LED indications are listed below.
✆
Blinking Red
Normal Operation
✆
Steady Red
Operation Stopped (power still on)
✆
Off
No Power
LED 101~801 indications are listed below.
✆
Steady Red
Lines 1~8 busy
✆
Off
Lines 1~8 idle
4.5.5
Connectors
The following connector is located on the COID(8)-U( ).
✆
CN1
Connects to the backboard
4.6
COID(4)-U( ) ETU
4.6.1
Description
The COID(4)-U13 (U19 New Zealand) ETU provides an
interface with the Central Office for Caller ID Detection.
This ETU provides circuitry for outside ring detection, hold,
dialling, Caller ID detection, and control functions.
It also incorporates line reversal detection and busy tone
detection circuitry.
Содержание Xen Master
Страница 1: ...System Hardware Manual NEC Australia Pty Ltd A6 324000 642 01 Release 4 0 May 2001...
Страница 37: ...May 2001 System Hardware Manual 2 19 A6 324000 642 01 Release 4 0 May 2001 Figure 2 1 System Block Diagram...
Страница 123: ...May 2001 System Hardware Manual 5 105 A6 324000 642 01 Release 4 0 May 2001 Figure 5 7 CPUB U13 ETU...