NEC Australia Pty Ltd Xen Master & Xen Axis
5 - 128 Installing Electronic Telephone Units
A6-324000-642-01 – Release 4.0
May 2001
The COI(8)-U( ) ETU provides identical circuits to serve
up to eight CO trunks that can be any combination of
DTMF and Decadic signalling. Refer to Figure 5-17
COI(8)-U( ) ETU.
4.3.2 Installation
A maximum of 8 COI(8)-U( ) ETUs can be installed in the
Xen Master system (maximum of 64 trunks) in slots S1~S8
in the first, second or third KSU.
A maximum of 2 COI(8)-U( ) ETUs can be installed in the
Xen Axis system (maximum of 16 trunks) in slots S3 ~ S7.
4.3.3 Switch Settings
The Reset Switch resets the Unit.
4.3.4 LED Indications
Live LED indications are listed below.
✆ Blinking Red Normal Operation
✆ Steady Red Operation Stopped (power still on)
✆ Off No Power
16 LEDs 101~801 indications are listed below.
✆ Steady Red Lines 1~8 busy
✆ Off Lines 1~8 idle
4.3.5 Connectors
The following connector is located on the COI(8)-U( ) ETU.
Figure 5-17 COI(8)-U( ) ETU
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