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Case Scenarios for replacing a digital trunk NT8D72BA,
QPC536E, or NTCK43 by a DDP2 card
NT5D97 Dual-port DTI2/PRI2 installation and removal
The following discussion describes possible scenarios when replacing a
digital trunk NT8D72BA PRI2 card or QPC536E DTI2 card or NTCK43
Dual PRI card configuration with a NT5D97 DDP2 card configuration.
Case 1 - The two ports of a QPC414 network card are connected to two digital
trunks.
In this case, the QPC414 and the two digital trunks are replaced by a single
DDP2 card, which is plugged into the network shelf in the QPC414 slot.
Case 2 - One port of the QPC414 card is connected to a digital trunk, and the
second is connected to a peripheral buffer. Both cards are in a network loop
location.
In this case, the QPC414 should not be removed. The digital trunk is removed
and the DDP2 card is plugged into one of the two empty slots.
Case 3 - The network shelf is full, one port of a QPC414 network card is
connected to a digital trunk, and the second is connected to a peripheral
buffer. This arrangement is repeated for another QPC414. The digital trunks
are located in a shelf that provides only power.
In this case, the peripheral buffers will have to be re-assigned, so that each
pair of buffers will use both ports of the same QPC414 card. The other
QPC414 card can then be replaced by the NT5D97 DDP2.
Note: If an NT8D72BA/NTCK43 card is being replaced by a DDP2
card, the D-channel Handler can be reconnected to the DDP2 card, or
removed if an onboard NTBK51DDCH card is used. Also, DIP Switches
in the NT5D97 must be set properly before insertion. NT5D97 has a
different DIP Switch setting from NTCK43AB. Refer to
"NT5D97AA/AB DIP switch settings" on
setting).
ISDN Primary Rate Interface
Page 159 of 396
page 160
for DIP switch
Installation and Configuration
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