[OpenSER-Users] "always" serial fork with LCR?

[Bogdan-Andrei Iancu]

Hi Amit,

Actually both parallel2serial forking support available in openser:
    1) LCR module
    2) core (see serialize_branches() + next_branches())

have the q-based ordering (parallel versus serial) built in.

Som if I understand correctly, you to do ordering based on q value, but 
you want only serial forking - no parallel forking for the branches with 
the same q, right?

Regards,
Bogdan

Amit Sharma wrote:
> Hi Bogdan,
>    Thanks for the quick reply.
>  
>    The behavior rfc3261 mentions for using q values is a common 
> ordering mechanism (Section 16.6) . I guess variants as such would not 
> be against rfc3261.
>   
>    I was suggesting that we could have additional flexibility added to 
> what the LCR module is currently doing. Otherwise i would almost 
> rework what is already there in the LCR module (to get list ordered by 
> qvalues into AVPs)
>  
>    A use case for the above request is where contacts for an AOR are 
> distributed in a system. The UA's come up with qvalue based on there 
> utilization etc. The idea is to send the call to the contact who has 
> been least used. I cannot enforce that the qvalues generated by the 
> UA's are unique unless I use a sequencing mechanism between the UA's.  
>  
>     
> Thanks,
> Amit 
>  
>      
>
>  
> On 2/27/08, *Bogdan-Andrei Iancu* <bogdan at voice-system.ro 
> <mailto:bogdan at voice-system.ro>> wrote:
>
>     Hi Amit,
>
>     First of all, the behaviour you want to achieve is against RFC3261
>     (forking based on q value), but for sure you know better what you
>     try to
>     get ;)
>
>     Now, depending where you take the list of destinations from, let's
>     assume you can get them into AVPs. For how to do serial forking from
>     AVPs, see:
>       
>     http://www.voice-sistem.ro/docs/avpops/ar01s08.html#ex_serial_forking
>
>     Regards,
>     Bogdan
>
>
>     Amit Sharma wrote:
>     >  Hi All,
>     >
>     >  I am a newbie to this list so please forgive me if the question
>     below
>     > has been discussed before. I could not find anything related so i am
>     > sending my query.
>     >
>     >  I have been looking at the LCR module to do serial forking since we
>     > want to prioritize contacts based on q values. However, we do
>     not want
>     > to fork in parallel to contacts even if they share the same q value.
>     > AFAIK,this is currently not possible with the LCR module.
>     >
>     >  Would it be a good idea to have a parameter (e.g "append-branches")
>     > in the LCR module which can control the forking behavior when q
>     value
>     > of contacts is the same?
>     >
>     >  Thanks,
>     >  Amit
>     >
>     >
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