User's Manual

Troubleshooting: Span Control Link68P64115A18–1

Mar 2003

1X SC 4812T Lite BTS Optimization/ATP Software Release R2.16.1.x

DRAFT

6-35

Troubleshooting: Span Control Link

Span Problems (No Control Link)

Table 6-31: Troubleshoot Control Link Failure

n Step Action

1 Connect the LMF computer to the MMI port on the applicable MGLI2/GLI2 as shown in

Figure 6-5.

2 Start an MMI communication session with the applicable MGLI2/GLI2 by using the Windows

desktop shortcut icon (refer to Table 3-10).

3 Once the connection window opens, press the LMF computer Enter key until the GLI2> prompt

is obtained.

At the GLI2> prompt, enter:

config ni current <cr> (equivalent of span view command)

The system will respond with a display similar to the following:

The frame format in flash is set to use T1_2.

Equalization:

Span A – Default (0–131 feet for T1/J1, 120 Ohm for E1)

Span B – Default (0–131 feet for T1/J1, 120 Ohm for E1)

Span C – Default (0–131 feet for T1/J1, 120 Ohm for E1)

Span D – Default (0–131 feet for T1/J1, 120 Ohm for E1)

Span E – Default (0–131 feet for T1/J1, 120 Ohm for E1)

Span F – Default (0–131 feet for T1/J1, 120 Ohm for E1)

Linkspeed: Default (56K for T1 D4 AMI, 64K otherwise)

Currently, the link is running at the default rate

The actual rate is 0

NOTE

Defaults for span equalization are 0–131 feet for T1/J1 spans and 120 Ohm for E1.

Default linkspeed is 56K for T1 D4 AMI spans and 64K for all other types.

There is no need to change from defaults unless the OMCR/CBSC span configuration requires it.

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 6-32.

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 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 pull–down menu.