[Asterisk-Users] Static on TDM Zaptel FXO

[Rich Adamson]

Doubtfull the 99.98% is any sort of problem. The number would have to be
much lower to have a constant impact on audio. 

------------------------

> A kernel recompile managed to give me an average of 99.98%, but I am not
> certain that this is optimal.  It seems that I get some background hiss,
> although the static is gone.
> 
> Anyone out there with higher than this?
> 
> Thanks,
> Greg 
> 
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of 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 at lists.digium.com
> [mailto:asterisk-users-bounces at 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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> >
> >
> >  
> >
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