Troubleshooting guide

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Cisco PGW 2200 Softswitch Release 9.8 Operations, Maintenance, and Troubleshooting Guide
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Chapter 6 Troubleshooting the Cisco PGW 2200 Softswitch Platform
Resolving SS7 Network Related Problems
Traffic Restart
Ensure that the MTP3 traffic restart timers and thresholds agree with the network defaults. Confirm that
the far-end switch or STP has the same values.
SS7 Destination is Out of Service
Typically, a signaling destination is out of service when all the SS7 links from the
Cisco PGW 2200 Softswitch to the destination or APC are out of service, or when all of the SS7 links
from the destination to the APC are out of service.
To restore an SS7 destination to service, perform the following steps:
Step 1 If you have not already collected system data, refer to the method that is described in the “Collecting
System Data for Cisco TAC” section on page 6-93.
Step 2 Contact your SS7 provider to verify the links from the DPC to the associated STP.
Step 3 Verify the state of the signaling channels, as described in the “Verifying the Status of all Signaling
Services” section on page 3-9.
If any of the SS7 links are out-of-service, restore the links according to the instructions in the “SS7 Link
is Out-of-Service” section on page 6-96. If all of the SS7 links to a destination are out-of-service, restore
the destination as described in the “SS7 Destination is Out of Service” section on page 6-102.
If the condition clears, the procedure is complete. Otherwise, proceed to Step 4.
Step 4 Contact the Cisco TAC to analyze the problem further and to determine a solution. For more information
about contacting the Cisco TAC, see the “Obtaining Documentation and Submitting a Service Request”
section on page xviii.
SS7 Route is Out of Service
To restore an SS7 route to service, perform the following steps:
Step 1 If you have not already collected system data, refer to the method that is described in the “Collecting
System Data for Cisco TAC” section on page 6-93.
Step 2 Change the service state of the destination to in-service, as described in the “Setting the Service State of
a Signaling Service” section on page 6-103.
If the destination goes into service, the procedure is complete. Otherwise, proceed to Step 3.
Step 3 Verify the state of the signaling channels, as described in the “Verifying the Status of all Signaling
Services” section on page 3-9.
If none of the SS7 links are in-service, proceed to Step 4. If all or at least one of the SS7 links to the
destination are in-service, then contact your SS7 provider to verify the links from the DPC to the
associated STP.
Step 4 Determine why the link is not aligning properly by checking the alignment status on the Cisco ITP-L
that is associated with the affected link, as described in the “Verifying the Link Alignment Status”
section on page B-6.
If the condition clears, the procedure is complete. Otherwise, proceed to Step 5.