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 Bearer Channel Connection Problems
Step 2 Remove the padding according the to point code address type that applies to the point code (14-, 16-, or
24-bit).
Note For an explanation of the point code address types, see
Cisco PGW 2200 Softswitch Release 9.8 Provisioning Guide.
Continuing with the example, because the problem is with an ITU SS7 connection, the address should
be 14 bits in length, resulting in the binary value 11011000110011.
Note If you are troubleshooting signaling problems for a Japanese ISUP connection, remember that
the Cisco PGW 2200 Softswitch sends the higher-order bits first for those point codes. The fields
for any sent point code value that you retrieve for a Japanese ISUP connection must be reversed
while in its binary value, so that you can correctly identify the associated point code on the
Cisco PGW 2200 Softswitch.
Step 3 Convert the binary code into decimal, using the correct point code format.
Note For an explanation of the point code formats, see Cisco PGW 2200 Softswitch Release 9.8
Provisioning Guide.
Concluding the example, since the problem is with an ITU SS7 connection and the value came from a
Cisco PGW 2200 Softswitch log message, the address should use the ITU International point code
format (3-bits/8-bits/3-bits, or 3-8-3), the resulting point code is 6.198.3.
Resolving Bearer Channel Connection Problems
Processing bearer channels is the primary responsibility of the Cisco PGW 2200 Softswitch. The main
function of the Cisco PGW 2200 Softswitch is to ensure that an ingress bearer channel at one endpoint
can connect successfully to an egress bearer channel at another endpoint.
The state of the bearer channels is often a good indicator of the overall operation of the system. You can
find procedures for determining the state of bearer channels in the “Verifying CIC States” section on
page 3-15.
The following sections contains procedures that are related to resolving problems associated with the
Cisco PGW 2200 Softswitch platform bearer channel connections:
• Setting the Administrative State, page 6-124
• Querying Local and Remote CIC States, page 6-129
• Performing CIC Validation Tests, page 6-131
• Resolving ISDN D-Channel Discrepancies, page 6-137
• Unblocking CICs, page 6-139
• Resetting CICs, page 6-140
• Resolving Stuck CICs, page 6-141
• Auditing Call States, page 6-144