[asterisk-users] Re: SIP/IAX peers UNREACHABLE and audio loss

[Edoardo Serra]

Hi Rajeev,

Rajeev Natarajan ha scritto:
> Well, we have add similar issues - do you use a media gateway /.IP 
> Phones / softphones as your extensions?

The problem happens mainly between server with Asterisks !

> 
> We were running Audiocodes and for some reason (I suspect a poor 
> ethernet switch), when there are more than 15 people using the line, 
> Audiocodes will not respond to a qualify and asterisk will drop the 
> call. 

Does Asterisk drop the line if the peer becomes UNREACHABLE ?
Even if RTP is still flowing ??

Turned off qualify (removed qualify=yes) and <still keeping
> fingers crossed> things seem fine.

I'll give it a try

Tnx for help

Edoardo

> 
> Rajeev
> 
> On 3/23/07, *Edoardo Serra* <edoardo.serra at webrainstorm.it 
> <mailto:edoardo.serra at webrainstorm.it>> wrote:
> 
>     Hi all,
>             I'm having a problem with some Asterisk servers
>     interconnected with
>     each other using IAX (I also tried with SIP without solving the problem)
> 
>     Sometimes, with apparently no reason, some peers become UNREACHABLE
>     (I have qualify=yes in iax.conf) and REACHABLE again as soon as
>     another qualify test is made.
> 
>     Our users are also complaining about audio loss during their calls,
>     apparently randomly, everything goes ok for days and bad for another
>     few
>     days.
> 
>     I strongly believe the 2 problems are strictly related because in the
>     logs I see REACHABLE / UNREACHABLE messages only for certains days
>     without regularity.
>     The days in wich i see a lot of messages are exactly the days with
>     most of complaint about audio loss
> 
>     I just noticed that timestamps of the logs (REACHABLE / UNREACHABLE)
>     are quite always during business hours, this makes me think at somewhat
>     related to load (cpu load, badwidth load, calls load, etc...)
> 
>     But, looking at hardware specs of our lan, servers and average load I
>     don't think they are over-stressed.
> 
>     Our servers are all:
>     2 x Intel(R) Xeon(TM) CPU 3.20GHz
>     1 GB RAM
>     2 x IDE HDDs Software RAID 1
>     Asterisk 1.2.13 with res_perl
>     Gentoo Linux
>     Some of them has a Sangoma card connected with an E1
> 
>     Most ot these are on the same LAN, interconnected with a 1 GB switch
>     (I don't think it should be a bandwidth problem).
> 
>     Load averages of these server is varying from 0.5 to 1.0
>     (I guess it should be ok)
> 
>     On each server we don't have more than 50 concurrent calls
>     (bridged SIP <-> IAX2 or IAX2 <-> ZAP)
> 
>     Used codec is mostly G729
> 
>     Sometimes on asterisk cli i see some messages like
>     "Avoided initial deadlock for '0x9fd130', 10 retries!"
>     I don't know if it could be somehow related.
> 
>     Someone of you can point me in the right direction ?
> 
>     Tnx in advance
> 
>     Regards
> 
>     Ing. Edoardo Serra
>     WeBRainstorm S.r.l.
> 
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