Troubleshooting guide

9-37
Cisco Broadband Local Integrated Services Solution Troubleshooting Guide
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Chapter 9 Troubleshooting Cisco Media Gateways
Symptoms and Solutions
Symptoms and Solutions
This section includes possible solutions to the following possible symptoms:
• “VISM Card Did Not Become Active” section on page 9-37
• “T1/E1 Configuration Mismatch” section on page 9-37
• “DSP Download Failure” section on page 9-39
• “VISM Front Card/Back Card Mismatch” section on page 9-39
• “Cannot Use the cc Command to Access a VISM Card” section on page 9-40
• “VISM Card Resets Intermittently” section on page 9-40
• “VISM Card Does Not Accept a Firmware Download” section on page 9-40
• “Echo Is Heard on a Voice Call” section on page 9-41
• “VISM Card LEDs Are Not Lighted” section on page 9-41
VISM Card Did Not Become Active
Investigate the following possible causes for a VISM card that does not become active:
• An E1 card is inserted in a slot where a T1 card was present, or a T1 card is inserted in a slot where
an E1 card was present, resulting in configuration mismatch.
• The minimum number (five) of DSPs failed to download.
• A front card type does not match the back card type—if the front card is T1 and the back card is E1,
or the front card is E1 and the back card is T1.
• The VISM card MIB image version does not match the PXM disk MIB image version.
T1/E1 Configuration Mismatch
Use the PXM dspcds command to identify a T1/E1 configuration mismatch, as follows:
NODENAME.1.7.PXM.a > dspcds
Slot CardState CardType CardAlarm Redundancy
---- ----------- -------- --------- -----------
1.1 Empty Clear
1.2 Empty Clear
1.3 Empty Clear
1.4 Empty Clear
1.5 Mismatch VISM-8E1 Clear
1.6 Empty Clear
1.7 Active PXM1-OC3 Clear
1.8 Empty Clear
1.9 Empty Clear
1.10 Empty Clear
1.11 Empty Clear
1.12 Empty Clear
1.13 Empty Clear
1.14 Empty Clear
1.15 Empty Clear
1.16 Empty Clear
1.17 Empty Clear
1.18 Empty Clear
1.19 Empty Clear