[SR-Users] Missing ACK

Geoffrey Mina geoffreymina at gmail.com
Tue Jun 29 13:47:39 CEST 2010


I have also seen this with Kamailio 1.5 I have not confirmed whether
Kamailio is sending the 200 OK back down to my asterisk server or not.

On Tue, Jun 29, 2010 at 7:15 AM, Klaus Darilion <
klaus.mailinglists at pernau.at> wrote:

> The log does not tell us anything.
>
> If you want to know from us if your config is wrong or your clients/server
> is buggy, then we need an ngrep dump recorded at the SIP proxy:
>
> ngrep -Wbyline -t -q port 5060
>
> regards
> Klaus
>
> Am 29.06.2010 12:37, schrieb Ole Kaas:
>
>  Hello,
>>
>> See transmission below. For some reason the ACK package is lost/dropped
>> and the remote server retransmits the 200 OK status. But Kamailio does not
>> retransmit the ACK on receiving the retransmitted OK's. Eventually the
>> remote server gives up and pulls the plug after ~20 seconds. Is this a bug
>> or should I look closer at my routing script? The script is for the ACK
>> handling pretty much the same at the vanilla script delivered with the
>> source. I'm still on version 3.0.0.
>>
>> /Ole
>>
>> ->  Request: INVITE sip:phonenum at destination, with session description
>> <- Status: 100 Trying
>> <- Status: 180 Ringing
>> <- Status: 183 Session Progress, with session description
>> <- Status: 200 OK, with session description
>> ->  Request: ACK sip:phonenum at destination
>> <- Status: 200 OK, with session description
>> <- Status: 200 OK, with session description
>> <- Status: 200 OK, with session description
>> <- Status: 200 OK, with session description
>> <- Status: 200 OK, with session description
>> <- Status: 200 OK, with session description
>> ->  Request: BYE sip:phonenum at destination
>> ->  Request: BYE sip:phonenum at destination
>> <- Status: 481 Call leg/transaction does not exist
>> _______________________________________________
>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
>> sr-users at lists.sip-router.org
>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>>
>
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