1-8 System organization
Description of CE/PE UEM (NT8Dl
lAC/DC)
Slots
1,2,
and 3 are reserved for the following circuit cards:
:
-
Floppy Disk Interface (FDI) (QPC742)
-
Central Processing Unit (CPU) (QPC687)
-
Memory/Peripheral Signalling Card (NT8D19AA)
Slots 4 through 9 in the Network area can be used by the following cards:
-
Superloop Network Card (lVlXDO4AA) serves one superloop (four
loops).
-
Enhanced Network Card (QPC4 14) serves two loops.
-
Conference/IDS Card (Conf/rDS) (NTSD17AA) uses two loops in the
Network area; at least one ConfR’DS is required in the system.
-
Digital Trunk Interface Card (DTI) (QPC472) occupies two slots.
-
D-Channel Interface Card @CHI) (QPC757)
-
Quad Serial Data Interface Card (QSDI) (QPC84 1)
-
Floppy Disk Unit (FDU) (NT8D68AA)
Note:
FDU occupies two slots and resides either in Network slots 4-9
or Peripheral Equipment (PE) slots O-9, depending on slot availability.
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If all slots in the first column of the CE/PE UEM are occupied, FDU
can reside in the second PE module.
System engineering
553-3001-151