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Nortel Networks Circuit Card User Manual

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 NT5D97 Dual-port DTI2/PRI2 card
 Page 359 of 906
Operation
The following discussion describes possible scenarios when replacing a 
digital trunk NT8D72BA PRI2 card or QPC536E DTI2 card or NTCK43 
Dual PRI card configuration with a NT5D97 DDP2 card configuration.
Figure 78
Clock Controller – Option 1
553-7401
Primary
clocking
source
Primary
Reference
Secondary
Reference
J1
J2
J3
Clock Controller
Backup
Clock
Controller 0
Clock
Controller 1
J1
J2
J3
Primary
Primary
Secondary
Secondary
REF 1
REF 2
REF 1
REF 2
Secondary
clocking
source