User's Manual

SCCP Backplane Troubleshooting – continued
08/01/2001
6-23
1X SCt4812ET Lite BTS Optimization/ATP
PRELIMINARY
No BBX2 Control in the Shelf
Table 6-21: MGLI2 Control Good – No Control over Co–located
BBX2s
Step Action
1 Visually check all GLI2 connectors (both module and
backplane) for damage.
2 Replace the remaining GLI2 with a known good GLI2.
3 Visually check BBX2 connectors (both module and
backplane) for damage.
4 Replace the BBX2 with a known good BBX2.
No (or Missing) Span Line Traffic
Table 6-22: BBX2 Control Good – No (or Missing) Span Line Traffic
Step Action
1 Visually check all GLI2 connectors (both module and
backplane) for damage.
2 Replace the remaining GLI2 with a known good GLI2.
3 Visually check all span line distribution (both connectors and
cables) for damage.
4 If the problem seems to be limited to one BBX2, replace the
BBX2 with a known good BBX2.
No (or Missing) MCC24/MCC8E Channel Elements
Table 6-23: No MCC24/MCC8E Channel Elements
Step Action
1 Verify CEs on a co–located MCC24/MCC8E (MccType=2)
2 If the problem seems to be limited to 1 MCC24/MCC8E,
replace the MCC24/MCC8E with a known good
MCC24/MCC8E.
– Check connectors (both module and backplane) for
damage.
3 If no CEs on any MCC24/MCC8E:
– Verify clock reference to CIO.
6