[asterisk-users] Quality problems with ISDN PRI

[Carles Pina i Estany]

Hi,

On Apr/23/2008, Steve Totaro wrote:
> 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.

no, we are not recording calls. Load average is very empty.
We are in contact with Spanish Digium partner... 

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

100 Mbps, enough for 50 - 60 calls

Thanks,

-- 
Carles Pina i Estany		GPG id: 0x8CBDAE64
	http://pinux.info	Manresa - Barcelona