[Devel] an interesting case

[Di-Shi Sun]

Hi All,

We met an interesting case. The test bed is the source, IPX Softswitch 2.0, to OpenSER, to the destination. 
1. The source sent an INVITE to OpenSER
2. OpenSER forwarded the INVITE to the destination
3. The destination sent a 183 to OpenSER
4. OpenSER forwared the 183 to the source
5. The source sent a BYE to OpenSER to cancel the call
I am sure it is wrong (according to rfc 3666, 2.5 section).

My question is if there is any way for OpenSER to know that the 200 OK for the INVITE has not been received. If it is possible, then it will be a workaround for this issue.

Thanks,

Di-Shi Sun.
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