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

[f6hqz-m at hamwlan.net]

Hi men,
 
I have already encountered some issue like this with few switches (very
known great brand)  which doesn't like VoIP traffic !
Check by drectly connected the VoIP equipment - if you can - with temporary
long Ethernet cables bypassing the tested switch to see what happens in this
case.
You can also tell to "qualify" with a longer delay, but this could not help
in case of regulary frames losses.
 
Good luck !
 
Francois BERGERET,
France.

-----Message d'origine-----
De : asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] De la part de Rajeev
Natarajan
Envoyé : samedi 24 mars 2007 08:14
À : Asterisk Users Mailing List - Non-Commercial Discussion
Objet : Re: [asterisk-users] SIP/IAX peers UNREACHABLE and audio loss


Well, we have add similar issues - do you use a media gateway /.IP Phones /
softphones as your extensions?

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

Rajeev


On 3/23/07, Edoardo Serra <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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