Splitting The Cores - Nortel Meridian 1 Hardware Replacement Manual

Splitting the cores

1 Verify that the disk drives are synchronized:
LD 137
STAT
2 If the disks are synchronized, proceed with Step 3 on page 65. If they
are not synchronized, execute the SYNC command:
SYNC
****
3 Verify that clock controller 0 is active. If it is not, switch to clock
controller 0:
LD 60
SSCK 0
SWCK
****
4 Verify that Core 0 is the active Core:
LD 135
STAT CPU
TEST CPU
If Core 0 is active, proceed with Step 5 on page 65. If Core 0 is not the active
CPU, swap Cores and verify again:
SCPU
STAT CPU
5 Verify that CMDU 0 is active. You may need to switch CMDUs.
LD 137
STAT
SWAP
6 Set the MAINT/NORM switch on the CP card in Core 0 to MAINT.
7 Set the ENB/DIS switch on all CNI cards in Core 1 to DIS.
8 Insert the Database Transfer Utility diskette which corresponds to
your Call Processor card into the IOP/CMDU or CMDU in Core 1.
Replacing equipment
to load the program
to get the status of the disk drives
to synchronize the drives
to exit the program
to load the program
to get the status of clock controller 0
to switch to clock controller 0 (if necessary)
to exit the program
to load the program
to check CPU status
to test the CPU
to swap CPUs
to check CPU status
to load the program
Get the status of CMDU and IOP.
Switch CMDUs (if necessary).
Page 65 of 250
Hardware Replacement