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POST INSTALLATION TEST
Repair Procedure When LED Indicates Abnormality
All 24 B-channels sent from the TSW are looped back to the TSW at Interface on the card. At this
time, the adjacent node detects AIS signals. (See
2. Line Loopback
All 24 B-channels sent from the line are looped back to the line at Line Interface on the card. (See
in the figure below.)
3. Payload Loopback
All 24 B-channels sent from the line are looped back to the line at Speech Path Control Block on
the card. (See
Self-Node
1
DTI pkg
front cable
FCH card
Sending Test
Data Pattern
CHAPTER 6
Page 136
Revision 3.0
in the figure below.)
Internal
Loopback
FUSION
Network
Analysis Method
Result of
Result of
Result of
Figure 6-4 Loopback Points of DTI Card
ND-70185 (E)
Get other manuals https://www.bkmanuals.com
in the figure below.)
2
External loopback
(Line Loopback)
NG:
Self-Node has errors
OK,
NG:
Line has errors
OK,
OK:
NG:
Other Node has errors
Other Node
3
Payload
loopback
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