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NTD12 Dual-port DTI/PRI card description and installation
Page 107 of 188
ISDN PRI Installation
Table 28 - External connectors and LEDs
Function
Faceplate
Designator
Type
Description
Switch ENB/DIS
Plastic,
ESD
protected
Card Enable/disable switch
Connectors
Port 0 Clock 0
RJ11 Connector
Connects reference clock to
Clock Controller card
Port 0 Clock 1
RJ11 Connector
Connects reference clock to
Clock Controller card
Port 1 Clock 0
RJ11 Connector
Connects reference clock to
Clock Controller card
Port 1 Clock 1
RJ11 Connector
Connects reference clock to
Clock Controller card
J5 TRK
9 Pin Female
D Connector
Two external DS-1 Trunk 0
and Trunk 1
J6 DCH
26 Pin Female
D Connector
Connects to DCHI or MSDL
LEDs
OOS
2 Red LEDs
ENET 0 or ENET 1 disabled
DIS
2 Red LEDs
Trunk 0 or Trunk 1 disabled
ACT
2 Green LEDs
Trunk 0 or Trunk 1 lines
active
RED
2 Red LEDs
Red Alarm on Trunk 0 or
Trunk 1
YEL
2 Yellow LEDs
Yellow Alarm on Trunk 0 or
Trunk 1
LBK
2 Green LEDs
Loop Back test being
performed on Trunk 0 or
Trunk 1
DCH
Bicolor Red/Green
LED
NTBK51AA status