Troubleshooting guide

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Cisco PGW 2200 Softswitch Release 9.8 Operations, Maintenance, and Troubleshooting Guide
OL-0800-14
Chapter 6 Troubleshooting the Cisco PGW 2200 Softswitch Platform
Resolving SS7 Network Related Problems
Note See Cisco PGW 2200 Softswitch Release 9.8 Provisioning Guide for more information on the MTP
timers.
Verifying MTP2 Timers
To verify the values that are used for the MTP2 timers on the Cisco ITP-Ls, complete the following steps:
Step 1 Enter the #show ss7 mtp2 timer channel command at the Cisco ITP-L to display the settings for the
MTP2 timers.
Where:
channel—Specifies a channel, 0 through 3.
The system returns a message like the following:
SS7 MTP2 Timers for channel 0 in milliseconds
Protocol version for channel 0 is Japan NTT Q.703 Version 1-1
T1 aligned/ready = 15000
T2 not aligned = 5000
T3 aligned = 3000
T4 Emergency Proving = 3000
T4 Normal Proving = 3000
T5 sending SIB = 200
T6 remote cong = 3000
T7 excess ack delay = 2000
T8 errored int mon = 0
TA SIE timer = 20
TF FISU timer = 20
TO SIO timer = 20
TS SIOS timer = 20
Step 2 Compare the MTP2 timers settings that are listed for the Cisco ITP-Ls to the MTP2 timers that are used
at the associated destination.
If the MTP2 timers settings match, the timer settings are not causing the signaling problem. Continue
troubleshooting the problem.
If the MTP2 timers settings do not match, perform the procedure in the “Modifying MTP2 Timers”
section on page 6-109.
Verifying MTP3 Timers
To verify the values that are used for the MTP3 timers, complete the following steps:
Step 1 Log on to active Cisco PGW 2200 Softswitch, start an MML session, and enter the
prov-rtrv:lnksetprop:name=“MML_name” command to display the settings for the MTP3 timers.
Where:
MML_name—MML name for the linkset that is associated with the MTP3 timers you want to verify.