[asterisk-ss7] libss7 stability issues

Alexandru Pirvulescu sigxcpu at gmail.com
Mon Jun 9 09:00:24 CDT 2008


I'm using sangoma with 4 E1s, asterisk 1.6.0-beta9, libss7 latest svn  
and I have no error after 20k calls (production).


P.S. Dropped Digium hardware long time ago.

On Jun 9, 2008, at 4:49 PM, Andreas Kaufmann wrote:

> Hi,
> I have encountered stability problems when using libss7. I am using
> "sipp" to generate multiple calls over the link. After a few hundred
> test calls asterisk randomly stops working and the asterisk process  
> does
> not exist any more in the unix process list.
> A second problem I have encountered is that after generating a lot of
> concurrent calls,  some of the ss7 channels on the linkset are  
> reported
> to be busy ("app_dial.c: Unable to create channel of type 'zap' (cause
> 34 - Circuit/channel congestion"), although this channels were not in
> use any more. I have to restart asterisk to get this channels free  
> again.
> I have tried the following configuration:
> OS: OpenSuse 10.3
> Zaptel: SVN-branch-1.4-r4315
> libss7: SVN-trunk-r171
> Asterisk: SVN-trunk-r118178M
> DIGIUM TE220P 2xE1 Card
> According to Matthews latest NEWS file (NEWS-05-30-2008) if have  
> also tried:
> libss7: SVN-trunk-r176
> Zaptel: 1.4.11
> Asterisk: 1.6.0
> Can anyone recommend a stable version for libss7/zaptel/asterisk?  
> Would
> it be better to use another distribution, e.g. Fedora?
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