
May 2001
System Hardware Manual
5 - 153
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5.2.3
LED Indications
Live LED indications are listed below.
✆
Blinking Red
Normal Operation
✆
Steady Red
Operation Stopped (power still on)
✆
Off
No Power
LED 1 indications are listed below.
✆
On
Some circuit(s) are receiving DTMF
signalling
✆
Off
All PBR(s) are idle
5.2.4
Connectors
The following connector is located on the PBR( )-U13
ETU.
✆
CN1
Connects to the backboard
5.3
VDH2(8)-U13 ETU
5.3.1
Description
The VDH2(8)-U13 ETU integrates both LAN and station
cabling. This is a standard ESI ETU with additional
circuitry for the LAN integration function.
Key Telephones and Attendant Consoles can be
connected to the VDH2(8)-U13 ETU via a VDD-UA Unit.,
CTU(C)-UA Unit or PCT(C)-U13 Unit.
Each VDH2(8)-U13 ETU has a built-in HUB facility that
has eight ports (IEEE 802.3 10Base-2).