[Users] OpenSER 1.2.1 resend of messages not matched in tm?

Klaus Darilion klaus.mailinglists at pernau.at
Wed Jun 20 18:16:34 CEST 2007


No solution - but I have seen this happing too sometimes (with openser 1.1)

regards
klaus

Tobias Lindgren wrote:
> Hi all,
> 
> I'm running openser 1.2.1 w/ tm module. In some calls, specially
> FAX-calls, my gateways tries T.38 first and then performs fallback to
> G711. This scenario makes my OpenSER resend some messages even though it
> has got an ACK.
> 
> What happends is that the terminating PBX doesn't support T.38 and sends
> a "488 Not Acceptable Media" respons to my OpenSER which is relayed back
> to my gateway. The relay of messages looks like this:
> - INVITE with T.38 from GW to PBX
>  1. PBX sends 488 to OpenSER
>  2. OpenSER ACKs to PBX
>  3. OpenSER sends 488 to GW
>  4. GW ACKs to OpenSER
>  5. OpenSER sends 488 to GW
>  6. GW ACKs to OpenSER
> - INVITE with G711 from GW to PBX
>  1. PBX OK back to GW
> 
> Now after the new INVITE with G711 OpenSER starts to send the
> 488-messages to my Gateway again, and I'm assuming it does so because it
> think they are not ACKed? Any idea to what goes wrong here?
> 
> Br,
> /Tobias
> 
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