Nortel Communication Server 1000S Installation And Configuration Manual page 71

Figure 21
Clock Controller – Option 3
Primary
Reference
Secondary
Reference
An NT8D72BA may
be configured as an
alternate to DDP2
ISDN Primary Rate Interface equipment overview
DDP2
clk 0
Port 0
clk 1
Primary Ref 1
Clk0
Port 1
Primary Ref 2
Clk1
DDP2
clk 0
Port 0
clk 1
Secondary Ref 1
Clk0
Port 1
Secondary Ref 2
Clk1
NT8D72BA
Both references from port 1
ISDN Primary Rate Interface
Secondary Ref 1
J1 Ref 1
J2 Ref 2
Secondary Ref 2
Page 71 of 394
Clock Controller
for CPU 0
J1 Sec.
J2 Prim.
Clock Controller
for CPU 1
J1 Sec.
J2 Prim.
553-7404
Installation and Configuration