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Procedure 19
Replacing the MSDL card
1
Disable the MSDL card in LD 96.
2
Disconnect MSDL to PRI cables.
3
Remove the faulty MSDL card.
4
Unpack and inspect the new MSDL card.
5
Set the MSDL switch settings to correspond to
6
Insert the new MSDL card into the selected card slot of the module
following the card guides.
7
Observe the red LED on the MSDL faceplate. If it turns on, flashes
three times, and stays on continuously, the MSDL is operating
correctly but is not yet enabled.
If the LED turns on and stays on continuously without flashing three
times, the card may be defective. Go to step 11.
8
Run and connect NT6D80 to QPC720 PRI J5 with a NTND26 cable.
9
Enable the MSDL card in LD 96.
10
Unplug the MSDL card and reinsert it. If the red LED still does not flash
three times, leave the card installed for approximately 10 minutes to
allow the card to be initialized.
11
After 10 minutes unplug the card, reinsert it, and if the card still does
not flash three times, the card is defective and must be replaced.
MSDL installation for all systems
Page 97 of 188
Table 25
and
Figure
ISDN PRI
Installation
26.
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