asterisk users - May 2005 - FW: Static on TDM Zaptel FXO

-----Original Message-----
From: Gregory Wiktor - ADCom Corp. 
Sent: Monday, May 16, 2005 5:40 PM
To: 'Asterisk Users Mailing List - Non-Commercial Discussion'
Subject: RE: [Asterisk-Users] Static on TDM Zaptel FXO

Hello,
Yes in the bios I set unused irq's.  Zttest is sporadic.

This is a non HT cpu, on a standard ide drive.  It is basically just a
p4-2.4 with a single ide, onboard lan, and that's about it.  All other
asterisk functions work well.

Next step I think I'll try it on another board and see what happens...
Or maybe recompile the kernel.

Greg 

-----Original Message-----
From: asterisk-users-bounces@lists.digium.com
[mailto:asterisk-users-bounces@lists.digium.com] On Behalf Of Damian
Funnell
Sent: Monday, May 16, 2005 5:30 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [Asterisk-Users] Static on TDM Zaptel FXO

Hi Gregory,

Have you checked that the card is on its own IRQ?

There has been a bit of discussion about this type of thing recently on
the list, do a search on the archive to find the various threads.

Try running zttest and see what accuracy it is reporting - anything less
than 99.99% is supposedly bad.

Various 'fixes' (work-arounds) are to make sure the zaptel is on
it's
own IRQ, disable Hyperthreading and remove RAID controllers or any other
high-performance devices that support DMA and other things that are
likely to compete with the zaptel.

Good luck.
D.

FFF Managed Technology Ltd
60 Cook St
P.O. 6368 Wellesley St
Auckland
t +64 9 356 2911
f +64 9 358 9070
m +64 21 415 297
w www.fff.co.nz



Gregory Wiktor - ADCom Corp. wrote:
>Hello All,
>I recently put in a zaptel 1fxo/1fxs card.  I am experiencing heavy 
>static.
>
>Even with the pots line disconnected, if I do a dial I still get
static.
>This way I know it's not the line, but rather something on the card.
>
>I tried alternate pci slots.
>
>This card has a power connector, does anyone know what the power 
>requirements are?  The unit is in a small case with a 2.4ghz p-4 and 
>512mb ram, on an intel board with 533fsb.  All other functions are
fine.
>
>I am using the latest CVS on Debian 2.6test
>
>Anyone experience this?
>
>Regards,
>Greg
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