[Freeswitch-users] B-Leg / A-Leg Race Condition

Fri Aug 31 23:33:03 MSD 2012

I do have an OpenSIPs proxy in front of and behind the A and B Leg's - but the issue still seems to be in FS

Sonus_UAC --> OpenSIPs --> Freeswitch --> OpenSIPs --> Broadsoft_M6

Log and SIP trace from FS Log file posted to PasteBin: http://pastebin.freeswitch.org/19799

On Aug 31, 2012, at 12:14 AM, SamyGo <govoiper at gmail.com> wrote:

> Well that narrow downs the possible solutions to doing some stuff on FS only ! - I really think that Stopping or applying a work-around for the re-invite from Broadsoft will get this fixed. I did some googling on the SIP 491 code and re-invites in FS and mostly they point to session timers or some media_bridging option in dialplan.
> 
> 
> On Fri, Aug 31, 2012 at 12:03 PM, Mike Burlingame <mike.burlingame at me.com> wrote:
> The Sonus and M6 are out of my control they belong to my upstream and downstream so I have no access to them
> 
> Broadsoft support will not work this issue because FS ACKs the 200 OK so dialog is completed at least on the B-Leg so that's when the M6 sends the 2nd invite however the dialog has not completed on the A-Leg but FS still passes the Invite along resulting in the 491 
> 
> 
> Sent from my iPhone 4S
> 
> On Aug 30, 2012, at 11:42 PM, SamyGo <govoiper at gmail.com> wrote:
> 
>> OK, and can you see whats happening inside the SONUS when it gets the second invite (debug logs etc)? Can you control the M6 to stop re-invites !?
>> 
>> On Fri, Aug 31, 2012 at 10:29 AM, Mike Burlingame <mike.burlingame at me.com> wrote:
>> Sure I will put logs and sip dump up tomorrow A-Leg == Sonus B-Leg == Broadsoft M6
>> 
>> Sent from my iPhone 4S
>> 
>> On Aug 30, 2012, at 10:24 PM, SamyGo <govoiper at gmail.com> wrote:
>> 
>>> Hi,
>>> Can you please manage a proper sip trace for this ! I'd really love to troubleshoot and analyse the sip traces.
>>> What is the equipment on your A-leg ? 
>>> 
>>> BR
>>> Sammy
>>> 
>>>  
>>> 
>>> On Fri, Aug 31, 2012 at 3:28 AM, Mike Burlingame <mike.burlingame at me.com> wrote:
>>> I would like to add an update to this and maybe someone has some other suggestions - It does look like that FS is disconnecting the call with cause code 31  [NORMAL_UNSPECIFIED] I did not notice the time stamp difference on the Bye when I first looked at the log's
>>> 
>>> The basis of the issue still stands a 491 Results in the B-Leg being disconnected
>>> 
>>> On Aug 24, 2012, at 12:53 PM, Mike Burlingame <mike.burlingame at me.com> wrote:
>>> 
>>>> We are seeing some instances when we send a invite from the B-Leg back to FS and FS passes the invite to the A-Leg that the dialog on the A-Leg has not fully completed yet causing a return of a 491 from the A-Leg side causing the call to be disconnected. wanted to see if anyone else has seen something like this while running FS and if anyone had any suggestions on a fix?
>>>> 
>>>> A-Leg
>>>> Invite into Freeswitch
>>>> 100 Trying back from FS to A-Leg
>>>> 180 Ringing from FS to A-Leg
>>>> 200 OK from FS to A-Leg at 15:08:14.638799
>>>> Invite from FS to A-Leg (From B-Leg below) at 15:08:14.749515
>>>> 100 Giving a try form A-Leg to FS at 15:08:14.749757
>>>> 491 From A-Leg to FS at 15:08:14.780968
>>>> ACK from FS to A-Leg at 15:08:14.781102
>>>> ACK from FS to A-Leg at 15:08:14.797143
>>>> BYE from A-LEG to FS 15:11:10.791963
>>>    481 Call Does Not Exist back to A-LEG
>>>> 
>>>> B-Leg
>>>> Invite from Freeswitch to B-Leg
>>>> 100 Giving a try from B-Leg
>>>> 180 Ringing from B-Leg
>>>> 200 OK  from B-Leg at 15:08:14.635670
>>>> ACK from FS to B-Leg  at 15:08:14.637044
>>>> Invite from B-Leg to FS at 15:08:14.748623
>>>> 100 Trying from FS to B-Leg at 15:08:14.748954
>>>> 491 from FS to B-Leg at 15:08:14.782169
>>>> ACK from B-Leg to FS at 15:08:14.782372
>>>> BYE from FS to B-Leg at 15:08:14.790714 with Cause Code 31
>>> 
>>> 
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>> 
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> 
> _________________________________________________________________________
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> 
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> 
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