[OpenSIPS-Users] Reducing INVITE delay until UAC sees 180 RINGING

[Bogdan-Andrei Iancu]

Hi Brian,

First of all you should really try to see where the delay comes from: 
make a trace with time stamps and see if the delay is because of INVITE 
processing (time diff between inbound and outbound INVITE), because of 
the callee reply (time diff between outbound INVITE and inbound 180 
reply)...etc...

Once we find the delay point, we can see why.

Regards,
Bogdan

opensipslist at encambio.com wrote:
> Hello list,
>
> PROBLEM
>
> With OpenSER 1.3.X we've always had a delay of a few seconds (at
> least) between INVITE and RINGING on a quiet network and host with
> good performance.
>
> QUESTION
>
> What are possible places in the config to tweak in order to minimize
> such a delay, and how many seconds of delay do most of you experience
> in your networks?
>
> I'm assuming that a delay of 1 second is reachable through config
> tuning, and wondering as well what kind of result (in terms of delay
> time) the maximum tuning yields. Already I've looked at things like:
>
>   disable_dns_blacklist
>   disable_dns_failover
>
> ...because DNS resolutions is a logical place to start reducing.
>
> Any ideas? Is there documentation about this?
>
> Thanks,
> Brian
>
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>   


-- 
Bogdan-Andrei Iancu
www.voice-system.ro