[asterisk-users] RE : TDM2400p bad sound quality

[Jay Wilton]

--- Gordon Henderson <gordon+asterisk at drogon.net> wrote:

> On Sun, 14 Jan 2007, Giuffredi wrote:
> 
> > I tried the card alone so I don't think is an IRQ
> problem (anyway is 
> > there a way to be sure?)
> 
> You can make sure the card is sitting on it's own IRQ -
> use the command
> 
>    cat /proc/interrupts
> 
> to check. Eg. on one of my boxes with a TDM400P:
> 
>             CPU0
>    0: 1231472788          XT-PIC  timer
>    2:          0          XT-PIC  cascade
>    5:          0          XT-PIC  uhci_hcd:usb1,
> uhci_hcd:usb2
>    7:          1          XT-PIC  acpi
>    8:          4          XT-PIC  rtc
>   11:    3101088          XT-PIC  eth0
>   12: 1231265328          XT-PIC  wctdm
>   14:      43803          XT-PIC  ide0
>   15:      66249          XT-PIC  ide1
> NMI:          0
> LOC:          0
> ERR:          0
> MIS:          0
> 
> This isn't foolproof, but it's a good start.
> 
> (and I don't know of the wctdm module is the same on the
> TDM2400P card 
> though)
> 
> You can also check that the card isn't losing interrupts
> by running the 
> zttest proram:
> 
>    /sbin/zttest
> 
> wait a few moments then kill it with Control-C - Eg.
> 
>    --- Results after 46 passes ---
> Best: 100.000000 -- Worst: 99.987793 -- Average:
> 99.993896
> 
> 
> There's more on interrupts here:
> 
>   
>
http://www.voip-info.org/wiki/view/Asterisk+PCI+bus+Troubleshooting
> 
> It's aimes at the TDM400P card, but I'd be surprised if
> the 2400P is that 
> much different (but someone please correct me if it is!)
> 
> Gordon
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remove the hardware echo can and setup software can.

honest abe


 
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