[Freeswitch-users] ACK to 200 OK in a Bridge

[Stephen Wilde]

This is not a particulare case: in all calls bridged by FS the ACK to the
200OK to the outbound leg is sent not related to the ACK received from
inbound leg.

I expect a flow as:
http://www.packetizer.com/ipmc/sip/papers/understanding_sip_voip/sip_call_flow.png

These are my traces:

LegA: http://pastebin.freeswitch.org/19565

LegB: http://pastebin.freeswitch.org/19566


On Fri, Jul 20, 2012 at 2:59 PM, Brian Foster <bdfoster at endigotech.com>wrote:

> Sorry, I think I understand a little better now.
>
> Please post a siptrace of both legs of the entire call on
> pastebin.freeswitch.org and link back here. Sanitize of you like, but
> dont make it too ambiguous.
>
> Brian Foster
> Endigo Computer LLC
>
> Sent from a mobile device.
> On Jul 20, 2012 8:49 AM, "Stephen Wilde" <wstephen80 at gmail.com> wrote:
>
>> I have the following issue: if I do a bridge of an inbound call to an
>> outbound call, when the called number answer the call with a 200 OK,
>> FreeSwitch sends the ACK instantely, without wait the ACK of the calling.
>>
>>  The message flow (as shown in the attached .png) is:
>>
>> CALLING              FS       CALLED
>>
>> INVITE       --------->
>> 100 Trying <---------
>>                              -------------> INVITE
>>                              <--------- 100 Trying
>>                              <--------- 200 OK
>>                              -------------> ACK
>> <--------- 200 OK
>> -------------> ACK
>>
>>
>>
>> When I expected that the ACK to called is related to ACK from the calling:
>>
>> CALLING              FS       CALLED
>>
>> INVITE       --------->
>> 100 Trying <---------
>>                              -------------> INVITE
>>                              <--------- 100 Trying
>>                              <--------- 200 OK
>> <--------- 200 OK
>> -------------> ACK
>>                              -------------> ACK
>>
>>
>>
>> For this reason, if sometimes the Calling doesn't send the ACK (because
>> it reject the 200 OK), the call is considered connected (and billed) by
>> Freeswitch (30s, probably due to a timeout waiting ack) and not by Calling
>> (0s).
>> There is a way (config?) to send ACK to called only when is received the
>> ACK from calling?
>>
>> Stephen
>>
>> _________________________________________________________________________
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>>
>> 
>> 
>>
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> _________________________________________________________________________
> Professional FreeSWITCH Consulting Services:
> consulting at freeswitch.org
> http://www.freeswitchsolutions.com
>
> 
> 
>
> Official FreeSWITCH Sites
> http://www.freeswitch.org
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>
> Join Us At ClueCon - Aug 7-9, 2012
>
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