NEC Australia Pty Ltd Xen Master & Xen Axis
5 - 134 Installing Electronic Telephone Units
A6-324000-642-01 – Release 4.0
May 2001
4.6.4 LED Indications
Live LED indications are listed below.
✆ Blinking Red Normal Operation
✆ Steady Red Operation Stopped (power still on)
✆ Off No Power
LED 101~401 indications are listed below.
✆ Steady Red Lines 1~4 busy
✆ Off Lines 1~4 idle
FAX LED indications are listed below.
✆ Steady Red Fax port is in use (device off-hook)
✆ Off Fax port is idle (device on-hook)
4.6.5 Connectors
The following connector is located on the COID(4)-U( )
ETU.
✆ CN1 Connects to the backboard
4.7 DID(4)-U13 ETU
4.7.1 Description
The DID(4)-U13 ETU provides interface for Direct Inward
Termination (or DID) lines. This ETU provides for a
maximum of four DID lines. Wink start, delay start,
immediate start, and second Dial Tone are accommodated
with this ETU. Dial Pulse and DTMF are also supported.
There are four built-in DTMF signal detectors. Refer to
Figure 5-21 DID(4)-U13 ETU.
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