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

Mike Burlingame mike.burlingame at me.com
Fri Aug 31 11:03:53 MSD 2012


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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>> http://www.freeswitchsolutions.com
>> 
>> 
>> 
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> 
> _________________________________________________________________________
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> http://www.freeswitchsolutions.com
> 
> 
> 
> 
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