User's Manual

Basic Troubleshooting – Span Control Link
08/15/2000
6-29
SC 4812ETL BTS Optimization/ATP
PRELIMINARY
Span Problems (No Control
Link)
Table 6-28: Troubleshoot Control Link Failure
n Step Action
1 Connect the CDMA LMF computer to the MMI port on the applicable MGLI2/GLI2 as shown in
Figure 6-4.
2 Start an MMI communication session with the applicable MGLI2/GLI2 by using the Windows
desktop shortcut icon (refer to Table 3-11).
3 Once the connection window opens, press the CDMA LMF computer Enter key until the GLI2>
prompt is obtained.
4 At the GLI2> prompt, enter:
span view <cr>
The system will respond with a display similar to the following framing format and line code
configuration example:
COMMAND ACCEPTED: span view
The parameter in NVM is set to T1_2.
56K AMI 64K B8ZS
Span Type–T1–3 Span Type–T1–2
Span Rate=56 Span Rate=64
Span A Type–T1 long haul Span A Type–T1 long haul
Span A Type–T1 long haul Span A Type–T1 long haul
Lapd slot for Span A=0 Lapd slot for Span A=0
Lapd slot for Span B=0 Lapd slot for Span B=0
5 The span configurations loaded in the GLI must match those in the OMCR/CBSC database for the
BTS. If they do not, proceed to Table 6-29.
6 Repeat steps 1 through 5 for all remaining GLIs.
7 If the span settings are correct, verify the edlc parameters using the show command.
Any alarm conditions indicate that the span is not operating correctly.
S Try looping back the span line from the DSX panel back to the MM, and verify that the looped
signal is good.
S Listen for control tone on the appropriate timeslot from the Base Site and MM.
8 Exit the GLI MMI session and HyperTerminal connection by selecting File from the connection
window menu bar, and then Exit from the dropdown menu.
9 If no TCHs in groomed MCCs (or in whole SCCP shelf) can process calls, verify that the ISB
cabling is correct and that ISB A and ISB B cables are not swapped.
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