[SR-Users] How do deal with a lost ACK and TM
Geoffrey Mina
geoffreymina at gmail.com
Mon Jun 21 15:12:57 CEST 2010
I am not 100% sure I fully understand my issue, but I think I'm on the right
track. I have a situation where Asterisk will drop calls a few seconds
after they are set up. What I believe is happening:
a=asterisk
k=kamailio
k --> INVITE --> a
a --> 100 TRYING --> k
a --> 183 RINGING --> k
a --> 200 OK --> k
k --> ACK -->a (this packet is never received by asterisk)
a --> 200 OK (retransmit) -->k
a --> 200 OK (retransmit) -->k
a --> 200 OK (retransmit) -->k
a --> no response to critical packet - terminating call
It doesn't appear that Kamailio is retransmitting the ACK. I would think
that would be part of the TM module, but perhaps I am not using it
properly. Is this possible or is there something else going on?
Thanks.
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