Avaya Nortel Communication Server 1000 Reference page 257

Function
LEDs
The following sections provide a brief description of each element on the faceplate.
Enable/Disable Switch
This switch is used to disable the card prior to insertion or removal from the network shelf.
While this switch is in disable position, the card does not respond to the system CPU.
ENET LEDs
Two red LEDs indicate if the "ENET0" and "ENET1" portions of the card are disabled. These
LEDs are lit in the following cases:
• When the enable/disable switch is in disabled state (lit by hardware).
• After power-up, before the card is enabled.
• When the ENET port on the card is disabled by software.
Circuit Card Reference
Faceplate Type
Designator
Unit 1 Clock 0 RJ11 Connector
Unit 1 Clock 1 RJ11 Connector
J5 TRK 9 Pin Female D
Connector
J6 DCH 26 Pin Female D
Connector
ENET 2 Red LEDs
DIS 2 Red LEDs
OOS 2 Yellow LEDs
NEA 2 Yellow LEDs
FEA 2 Yellow LEDs
LBK 2 Yellow LEDs
DCH Bicolor Red/
Green LED
Description
Connects reference clock 1 to Clock
Controller card 0
Connects reference clock 1 to Clock
Controller card 1
Two external E1 Trunk 0 and Trunk 1
Connects to external DCH or MSDL
ENET 0 or ENET 1 is disabled
Trunk 0 or Trunk 1 is disabled
Trunk is out of service
Local (Near End) Alarm
Far End Alarm
Loop Back test being performed on
Trunk 0 or Trunk 1
NTBK51AA/NTBK51CA status
Physical description
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