[asterisk-dev] [asterisk-commits] oej: trunk r93160 - in /trunk: CHANGES configs/sip.conf.sample

[Pavel Jezek]

also some service providers have nat translation timeout below 60s, eg. 
Orange SK in umts mobile network,
currently only way is to lower maxexpiry timeout, but it's ugly, because 
it's global option and affect all peers :-(


Sergey Okhapkin wrote:
> This problem is very important to me... Can somebody provide a list of NAT 
> routers which can't keep connection tracking for more than 30-60 seconds? I'd 
> be happy to create and maintain a page on http://www.voip-info.org/wiki/ with 
> a list of trouble bringing routers. My current recommendation to my customers 
> is to have registration interval in SIP client to be 120 seconds, but I'm 
> very interesting in to have a list of ill behaving routers.
>
> On Sunday 16 December 2007, Olle E Johansson wrote:
>   
>> 16 dec 2007 kl. 09.57 skrev Pavel Jezek:
>>     
>>> shouldn't we have also qualifyfreq configurable?
>>> default 'sip ping' frequency 60s isn't enough in many envrironments,
>>> because udp nat translations on firewalls often timeouts quicker...
>>>       
>> Absolutely correct. The current recommendation is 29 seconds if you
>> use it for NAT keepalives.
>>
>> I'll be happy to evaluate your patch in the bug tracker!
>>
>> /Olle
>>
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