NEC Australia Pty Ltd
Xen Master & Xen Axis
5 - 130
Installing Electronic Telephone Units
A6-3
240
00-6
42-
01 –
R
e
leas
e 4
.0
M
a
y
20
01
4.4.4
LED Indications
Live LED indications are listed below.
✆
Blinking Red
Normal Operation
✆
Steady Red
Operation Stopped (power still on)
✆
Off
No Power
LEDs 101~401 indications are listed below.
✆
Steady Red
Lines 1~4 busy
✆
Off
Lines 1~4 idle
FAX LEDs indications are listed below.
✆
Steady Red
Fax port is in use (device off-hook)
✆
Off
Fax port is idle (device on-hook)
4.4.5
Connectors
The following connector is located on the COI(4)-U( )
ETU.
✆
CN1
Connects to the backboard
4.5
COID(8)-U( ) ETU
4.5.1
Description
The COID(8)-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.