Hi everybody,
I'm testing following scenario(for client) using SIPp and Open IMS Core :
Messages Retrans Timeout
Unexpected-Msg
INVITE ----------> 115 0 0
100 <---------- 113 0 0
180 <---------- 110 0 0
200 <---------- 110 8 0
ACK ----------> 110 8
BYE ----------> 110 3 0
200 <---------- 108 0 0
ACK ----------> 108 0
As you can see there is 8 times retransmissions for 200 OK, which client
receives and ACK request, which client sends.
Now I can't understand fully the meaning of retransmissions for 200 OK and
ACK. As 200 OK is just a response, so retransmission doesn't make any sense.
And the ACK is a request, which expects no response, so why there is
retransmission for ACK?
thanks in advance
Babak
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