Nortel Networks NN43001-301 manual Clock Controller options description Clock Option

74ISDN Primary Rate Interface equipment overview

Table 20

Clock Controller options - description

Clock Option	Notes
Option 1	This option provides a single CPU system with 2 clock sources
	derived from the 2 ports of the DDP.
	Connector Clk0 provides a clock source from Port 0.
	Connector Clk0 provides a clock source from Port 1.
	Refer to Figure 31 "Clock Controller - Option 1" (page 75)
Option 2	This option provides a Dual CPU system with 2 references of a
	clock source derived from port 0 of the DDP.
	Connector Clk0 provides a Ref 1 clock source from Port 0.
	Connector Clk1 provides a Ref 2 clock source from Port 0.
	Refer to Figure 32 "Clock Controller - Option 2" (page 76)
Option 3	This option provides a Dual CPU system with 2 references of a
	clock source derived from port 1 of the DDP.
	Connector Clk0 provides a Ref 1 clock source from Port 1.
	Connector Clk1 provides a Ref 2 clock source from Port 1.
	Refer to Figure 33 "Clock Controller - Option 3" (page 77)
Option 4	This option provides a Dual CPU system with 2 references from
	each clock source derived from the DDP.
	Connector Clk0 provides a Ref 1 clock source from Port 0.
	Connector Clk1 provides a Ref 2 clock source from Port 0.
	Connector Clk0 provides a Ref 1 clock source from Port 1.
	Connector Clk1 provides a Ref 2 clock source from Port 1.
	Refer to Figure 34 "Clock Controller - Option 4" (page 78)

Nortel Communication Server 1000

ISDN Primary Rate Interface Installation and Commissioning

NN43001-301 02.03 Standard

Release 5.5 7 December 2007

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