Nortel Communication Server 1000S Installation And Configuration Manual page 69

Isdn primary rate interface
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Figure 19
Clock Controller – Option 1
Primary
clocking
source
Secondary
clocking
source
ISDN Primary Rate Interface equipment overview
REF 1
Primary
Reference
REF 2
REF 1
Secondary
Reference
REF 2
ISDN Primary Rate Interface
Primary
Primary
Secondary
Secondary
Page 69 of 394
Clock
Controller 0
J1
J2
J3
Clock Controller
Backup
Clock
Controller 1
J1
J2
J3
553-7401
Installation and Configuration

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