[Asterisk-Users] Static on TDM Zaptel FXO

[Damian Funnell]

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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