Upgrading From Sl-1 Vle/Xl To Meridian 1 Option 71 - Nortel Meridian SL-1 Supplementary Manual

Upgrading from SL-1 VLE/XL to Meridian 1 Option 71

1 Obtain printouts of all the characteristics (TN, loop, telephones and all
other assignments and features) of the existing system. Retain these
printouts for an after conversion check.
2 Using overlay program 43, perform a data dump to the existing tape or
disk.
3 Remove front panels from QCA24 and QCA25 cabinets.
4 Unpack the QPC417 junctor board and mounting bracket. Secure
bracket to junctor board with screws provided.
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5 Set ENB/DIS switch on all power monitor cards to DIS.
6 Load overlay program 35 and STAT CPU to determine which CPU is
active. If necessary switch CPU's (SCPU) to ensure that system is
operating in CPU 1.
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7 Set the MAINT/NORM switch on CPU 1 shelf to MAINT.
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Position the QPC417 junctor board at the top of the QCA25
cabinet and secure to frame with mounting screws (Figure 7-1).
Attach QPC36A Terminating plugs to connectors for unused
network groups.
Disable memory associated with CPU 0 (00, 01, 02, and so on).
Disable CMA 0.
Set ENB/DIS faceplate switches on the QPC215 SBE associated
with CPU 0 to DIS.
Load overlay program 39 and STAT SCG to determine which
SCG is active. If necessary switch SCG's (SCLK) to ensure that
system clock 1 is active.
Set CPU 0 breaker on the QBL11 power distribution box to OFF.
Tag and disconnect all cables connected to faceplate connectors
on circuit packs located on CPU 0 shelf.
Disconnect remaining cables from end of CPU 0 shelf.
Upgrading from SL-1 VLE/XL to Option 71 7-5
Shelf upgrades to Meridian 1 553-3001-253