Nortel Networks DCT1900 manual Mixing CPU1 and CPU2 based Systems, Master Cable Output

Technical Product Manual - DCT1900

Installation Instructions, Modular Cabinet – CPU Cabling

CAT 5

Master Cable Output

1 White/Blue

2 Blue/White

4White/Orange

RJ-45 5 Orange/White

7 White/Green

8Green/White

		4
	CAT 5 White/Orange	5
66 Block
	Cable
	Orange/White
	CAT 5
	White/Orange Cable	4
	Orange/White	5

CAT 5

Cable

Slave 1

In

RJ-45

Out

Slave 2

In

RJ-45

Out

White/Orange

4 Orange/White 5

Make a cable for each Slave CPU using only pins 4 and 5 of the

RJ-45, and connect to the Master Output on the 66 block as per the diagram.

Daisy chaining is possible using each Slave as a master for a

Sub-cluster configuration (maximum of 2 levels of slaves).

The cable delay must be measured for each connection, entered in each slave’s configuration in nanoseconds.

Slave 3

In

RJ-45

Out

Fig. 20-8 CPU2 Sync Cable for more than 2 REs

20.5Mixing CPU1 and CPU2 based Systems

Connection of the Sync Cable

CPU1 to CPU2 - CPU 1 Master (Figure 20-9)

When connecting CPU1 master to CPU2 slave, it will be necessary to cut the supplied cables and terminate them at the punch-down blocks. Cross connect the CPU1 blue pair to the CPU2 orange pair, pins 4 & 5 in the RJ45. Measure the delay, and enter the value into the CPU2 (slave) configuration in nanoseconds.

CPU2 to CPU1 - CPU2 Master, Multiple REs (Figure 20-10)

If connecting a CPU2 as master with a CPU1 as a slave, it will be necessary to cut the supplied cables and terminate them at on a punch down block. The CPU2 will have an output on the blue, orange, and green pairs, while the CPU1 will have an input on the blue pair. Cross connect one of the CPU2 outputs to the blue pair of the CPU1 input. This can be repeated for up to 3 slaves REs. Measure the delay and enter the value into the slave configuration in nanoseconds.

20-10	Install-DCT1900/R8/mw
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