Hello there,
I think that i found a bug within failure routes on version 4.1.1, i have a
call flow that needs to use the failure routes 4 times if nobody answer the
call, but when the call goes to the 3º attempt to same failure route
kamailio doesn't handle the transaction,
With the same kamailio script but using the version 4.0.1 kamailio works
correctly.
Please check the attachment with kamailio debug level 3
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Cumprimentos
José Seabra