[asterisk-users] Quality problems with ISDN PRI

[Steve Totaro]

On Tue, Apr 22, 2008 at 7:10 AM, Carles Pina i Estany <carles at pina.cat> wrote:
>
>  Hello,
>
>  We have an Asterisk server with a TE410P Quad-Span togglable E1/T1/J1
>  card, 3 SPANs configured and OK and one SPAN unconfigured.
>
>  In our tests it works fine, but when it has a big laod of calls (say,
>  from 40 to 60) we have quality problems: some calls has the sound
>  cut-off (during the call, voice was not stable)
>
>  The IRQ card is alone, CPU load was not high, network was fine for sure.
>  This server is receiving the calls from SIP channels and routing to the
>  primaries. It's a HP server, multicore, multiCPU.
>
>  I'm wondering if someone has had these kind of problems (quality
>  problems, sound cut off) with 40 and 60 calls but not with 2 or 3, using
>  Digium cards.
>
>  Bit later I will call to Digium but I thought that here there is lot of
>  people with lot of experience with these cards.
>
>  Thank you,
>

Just curious, are you recording these calls because that is around the
I/O threshold for audio issues when recording all calls.

Also, you say no network issues but what is the rating of your
switches PPS (often overlooked for speed such as 100mb or 1000mb)?

Thanks,
Steve Totaro