I have a Cisco AS5400 connected to a mobile operator using PGW (SS7) nailed. I have the config as shown on the attachment.When calls from the mobile operator reach the AS5400 they follow the VoIP dial-peer to the destination IP but only few out of many calls is successful. Out of the successful calls few may last few (3mins)minutes while many will last less than 30 seconds and others will mainly failed. We have tried different carriers but the same problem.
Is there anything that I am doing wrong, please advice.
I went through the isdn debug and looks like the router is recieving the disconnect from the telco almost after 30-60s. You might send the following debugs all taken at ONE go. Please make sure you have turn "service timestamps debug datetime msec".
debug voip ccapi inout
debug h225 q931
debug h225 asn1
debug h245 asn1
debug h323 h225 events
debug h323 h245 events
These debugs would at least confirm if the router is doing any mischief or not. Otherwise we can then get back to telco.
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