Table 19 clock controller options- summary – Nortel Networks NN43001-301 User Manual

Page 73

NT5D12 Dual-port DTI/PRI

A single CPU system has one Clock Controller card. This card can receive
reference clocks from two sources referred to as the primary and secondary
sources. These two sources can originate from a PRI, DTI, etc. PRI cards
such as the QPC720 are capable of supplying two references of the same
clock source. These are known as Ref1 (available at J1) and Ref2 (available
at J2) on the QPC720.

The NT5D12 card is capable of supplying two references from each clock
source, i.e., four references in total. NT5D12 can thus supply Clk0 and Clk1
from Port 0 and Clk0 and Clk1 from Port 1. Either Port 0 or Port 1 can
originate the primary source, as shown in

Figure 31 "Clock Controller -

Option 1" (page 75)

through

Figure 34 "Clock Controller - Option 4" (page

78)

Figure 34 "Clock Controller - Option 4" (page 78)

There is one new Clock Controller cable required for the new DDP card,
which is available in four sizes; this is the NTCG03AA/AB/AC/AD. Refer to

"Reference clock cables" (page 68)

for more information.

"Reference clock cables" (page 45)

summarizes the clock options.

Table