[OpenSIPS-Users] Problem with prefix() during call forwarding

[Bogdan-Andrei Iancu]

Hi Andrew,

Just to refresh me - what is the failure that trigger the failure_route? 
a timeout on the ongoing branch?

I can take a look in TM to see how difficult will be to revert the 
CANCEL and the INVITE, but I was not sure about the failure scenario you 
had (to investigate).

Regards,
Bogdan


Andrew Pogrebennyk wrote:
> Bogdan,
>
> Thanks. I'm using 1.5.3. I sort of got stuck with this serial forking 
> scenario. I mean, OpenSIPS does what is supposed to do. The problems is 
> the call needs to be sent to (and is originated by) the Cisco AS5300. 
> When one destination fails OpenSIPS sends the call to the next 
> destination, but since new INVITE is part of the same dialog for 
> OpenSIPS is carries the same Call-ID and From tag the Cisco gets 
> confused and sends 482 Loop Detected or 500 Internal Server Error. 
> Perhaps delaying new INVITE by a few ms for the Cisco to invalidate the 
> call state would have helped, but I can't find my way around this.
>
> Regards,
> Andrew
>
> Bogdan-Andrei Iancu wrote:
>   
>> Hi Andrew,
>>
>> Noticed you fixed the problem, but here are some ideas/questions:
>>
>> 1) what version on opensips do you use?
>>
>> 2) keep in mind that all the changes you do before creating the 
>> transaction (which is typically done by the first t_relay()) are 
>> inherited by all the following branched (you create via failure route). 
>> If you want to do changes to affect only a specific branch, you should 
>> use the onbranch route (see 
>> http://www.opensips.org/Resources/DocsCoreRoutes#toc2)
>>
>> Regards,
>> Bogdan
>>     
>
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-- 
Bogdan-Andrei Iancu
www.voice-system.ro