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

[Bogdan-Andrei Iancu]

Errata: :D

Bogdan-Andrei Iancu wrote:
> Hi Brian,
>
> rev_dns affects two scenarios:
> - comparisons with domains in script ( like src_ip=="foo.bar") - reverse 
> DNS will be done on foo.bar
                      ^^^^^^ -> on src_ip  
> - internal checks of IPs against SIP uri / SIP hosts (like checking for 
> VIA matching, for src IP nat, etc)
>
> Shortly, if when doing IP versus IP/domain checks, if reverse DNS should 
> be done if "domain"
>
> Regards,
> Bogdan
>
> opensipslist at encambio.com wrote:
>   
>> Hello list,
>>
>> An ven., déc 18, 2009, opensipslist at encambio.com schrieb:
>>   
>>     
>>> 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?
>>>
>>>     
>>>       
>> The OpenSIPS documentation is excellent of course, but sadly lacking
>> information about such core parameters as those above and 'rev_dns'
>> relating to when and how often they effect performance. For example,
>> does 'rev_dns = yes' mean that a reverse lookup takes place once at
>> startup, every time the route script is entered, once a new
>> transaction begins, dialog...
>>
>> There are a lot of parameters where it's not clear when and how
>> often they effect performance, or am I missing something?
>>
>> Regards,
>> Brian
>>
>> _______________________________________________
>> Users mailing list
>> Users at lists.opensips.org
>> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>>
>>   
>>     
>
>
>   


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