Nortel Meridian 1 Manual page 654

Upgrade system installation through x11 release 21

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27 Switch the cables at the PE end:

If NT8D92 cables inside the IPE modules are not connected,

connect them to the faceplates of the appropriate NT8D01

Controller cards.

28 Turn on power to the cabinet:

Set the AC input circuit breaker on the –48V rectifier in the cabinet

Set the CAB INP circuit breaker on the power control shelf in the

cabinet and all other shelf circuit breakers to ON.

29 In the option 61C, verify that all cards are enabled (all ENB/DIS

switches are set to ENB).

30 Follow the appropriate step below to restore power in each

Core/Network module.

Note: If power to both Core/Network modules is restored

simultaneously, the CMDUs should still be synchronized.

For AC-powered systems, simultaneously set the MPDU in both

Core/Network modules to ON (up position).

For DC-powered systems, simultaneously set the switch on the

module power supply in both Core/Network modules to ON (up

31 Reenter system configuration data into the customer database, if

required, in the following sequence:

To improve system performance, balance the network loops

between both Core/Network shelves. To do this, do the following:

Define the target loop using the Configuration Program

Move the loops using the Move Data Blocks Program (LD 25).

Refer to X11 input/output guide (553-3001-400) for instructions on

using LD 17 and LD 25.

Note: You may have to add one or more network loops in the database

for network shelf 1 (loops 16 through 31) to make the network shelf

operational.

Upgrade system installation Upgrading to Meridian 1 system options

Meridian 1 option 51 upgrades

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