Nortel Circuit Card Installation Manual page 323

Table 113
External connectors and LEDs
Faceplate
Function Designator
Switch ENB/DIS
Connectors Unit 0 Clock 0
Unit 0 Clock 1
Unit 1 Clock 0
Unit 1 Clock 1
J5 TRK
J6 DCH
LEDs ENET
DIS
OOS
NEA
FEA
LBK
DCH
NT5D97 Dual-port DTI2/PRI2 card
Type
Plastic, ESD protected
RJ11 Connector
RJ11 Connector
RJ11 Connector
RJ11 Connector
9 Pin
Female D Connector
26 Pin
Female D Connector
2 Red LEDs
2 Red LEDs
2 Yellow LEDs
2 Yellow LEDs
2 Yellow LEDs
2 Yellow LEDs
Bicolor Red/Green LED
Circuit Card
Page 323 of 906
Description
Card Enable/disable switch
Connects reference clock 0 to
Clock Controller card 0
Connects reference clock 0 to
Clock Controller card 1
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 status
Description and Installation