Section 2: PCB Installation and Startup
Aspila EX Hardware Manual Section 2: PCB Installation and Startup 2-49
2
Initial Installation of Trunk PCBs
When first installing the system:
1. Set the run/block switch
DOWN on all COIU-LS1, COIU-LG1, 4TLIU, DIOPU, 1PRIU or
BRIU PCBs.
2. Insert all PCBs in sequential order. The installer must install trunk PCBs in order (i.e.; slot 5
first, slot 6 next, slot 7 next, etc.) for a sequential numbering plan.
3. Set the run/block switch
UP on each PCB.
Installing COIU-LS1/LG1, 4TLIU, DIOPU, or BRI PCB’s:
The order in which trunk PCBs are physically inserted determines the num-
bering plan. For example, if four PCBs are installed in the following order,
the numbering plan below would apply:
Installing PRI PCBs
The PRI Interface PCB uses the first block of 32 consecutive trunks.
For example, if you have an 8COIU PCB installed for trunks 1-8, the PRI
PCB will automatically use trunks 9-40. If you have 8COU PCBs installed
for trunks 1-8 and 17-24, the PRI PCB will use trunks 25-56. The PRI PCB
cannot use trunks 9-16 (even if available) since they are not part of a consec-
utive block of 32 trunks.
Order of
Install
PCB Slot # PCB Line Circuits
148COIU1-8
254COUI9-12
3 7 4TLIU 13-16
4 6 4TLIU 17-20
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