[asterisk-dev] [asterisk-users] SIP REGISTER

[Alex Balashov]

By default, the interval at which the qualify pings are sent is, indeed 
quite low.

There is no consequence to disabling it except for the obvious 
implication that Asterisk then has no way way of knowing if the peer is 
dead without first trying to reach it, every time and with every request.

But there are disadvantages to using 'qualify' for that purpose, too; 
sometimes there is arbitrary latency in the network that can cause peers 
to become marked 'Unavailable' rather whimsically.

The answer is basically: do whatever you want.  No "best practices" here.

Personally, I'd recommend a qualify setting like 2000.


michel freiha wrote:

> Dear Alex,
> 
> The problem is that the asterisk server is sending these packets 
> continuously with no stop and with a negligible duration between packets 
> for the same extension...My Asterisk server read the extensions from the 
> database and not from extensions.conf...There is a field in the sip 
> buddies table with name qualify and with type char...WHat do you suggest 
> me to do? Put the value or qualify to no or ichange the type to int and 
> put a numeric value inside?
> 
> If I put the value to no what this the disadvantages?
> 
> Regards
> 
> On Thu, Oct 30, 2008 at 1:30 PM, Alex Balashov 
> <abalashov at evaristesys.com <mailto:abalashov at evaristesys.com>> wrote:
> 
>     These are requests where one endpoint "pings" the other to check if it
>     is still alive.
> 
>     What is the problem?
> 
>     michel freiha wrote:
> 
>      > Hi all,
>      > I'm facing an issue with my asterisk server when an extension (X-Lite
>      > softphone) tries to register on it...A huge amount of packets is
>      > exchanged between endpoint and asterisk server while the X-Lite is
>      > online...Even when I sign out from X-Lite, the asterisk server
>     continues
>      > sending packets to my machine...Can Someone help me in that?
>     Please find
>      > the SIP packets between asterisk and X-Lite on
>     http://pastebin.com/d85f913e
>      > Regards
>      >
>      >
>      >
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>     --
>     Alex Balashov
>     Evariste Systems
>     Web    : http://www.evaristesys.com/
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-- 
Alex Balashov
Evariste Systems
Web    : http://www.evaristesys.com/
Tel    : (+1) (678) 954-0670
Direct : (+1) (678) 954-0671
Mobile : (+1) (706) 338-8599