Nortel Communication Server 1000S Installation And Configuration Manual page 99

Figure 33
Clock Controller - Option 3
Primary Reference
Secondary Reference
ISDN Primary Rate Interface equipment overview
DDP1
Clk 0
Port 0
Clk 1
Clk 0
Port 1
Clk 1
DDP2
Clk 0
Port 0
Clk 1
Clk 0
Port 1
Clk 1
A QPC720 may
be configured
as an alternative
to DDP2
Both References from Port 1
ISDN Primary Rate Interface
Primary Ref 1
Primary Ref 2
Secondary Ref 1
Secondary Ref 2
J1 Ref 1
QPC720
J2 Ref 2
Installation and Configuration
Page 99 of 394
CC for CPU0
J1 Sec
J2 Pri
CC for CPU1
J1 Sec
J2 Pri
Secondary Ref 1
Secondary Ref 2
553-AAA0081