User's Manual

Troubleshooting: SCCP Backplane – continued
6-26 1X SC 4812T Lite BTS Optimization/ATP FEB 2005
PRELIMINARY
No AMR Control (MGLI good)
Table 6-24: MGLI Control Good – No Control Over AMR
n Step Action
1 Visually check the Master GLI Connectors (both card and backplane) for damage.
2 Replace the Master GLI with a known good GLI.
3 Replace the AMR with a known good AMR.
No BBX Control in the Shelf
Table 6-25: MGLI Control Good – No Control over Co–located BBX Cards
n Step Action
1 Visually check all GLI Connectors (both card and backplane) for damage.
2 Replace the remaining GLI with a known good GLI.
3 Visually check BBX Connectors (both card and backplane) for damage.
4 Replace the BBX with a known good BBX.
No (or Missing) Span Line Traffic
Table 6-26: BBX Control Good – No (or Missing) Span Line Traffic
n Step Action
1 Visually check all GLI Connectors (both card and backplane) for damage.
2 Replace the remaining GLI with a known good GLI.
3 Visually check all Span Line Distribution (both connectors and cables) for damage.
4 If the problem seems to be limited to one BBX, replace the BBX with a known good BBX.
No (or Missing) MCC24E/MCC8E Channel Elements
Table 6-27: No MCC–1X/MCC24E/MCC8E Channel Elements
n Step Action
1 Verify Channel Elements on a co–located MCC of the same type.
(CDF MccType Codes: MCC8E = 0; MCC24E = 2; MCC–1X = 3)
2 Check MCC Connectors (both card and backplane) for damage.
3 If the problem seems to be limited to one MCC, replace it with a known good MCC of the same
type.
4 If no Channel Elements are active on any MCC, verify the Clock Reference to the CIO.
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