[asterisk-users] Echo and static on PRI with errors

[Marco Signorini]

Tom O'Connor wrote:
>
>
> On Wed, Jul 1, 2009 at 7:37 AM, Francesco Peeters
> <francesco at fampeeters.com <mailto:francesco at fampeeters.com>> wrote:
>
>     John F. Ervin wrote:
>     > What do you do if you find things sharing interrupts (IRQ 11) in my
>     > case with my X100P card.  I believe there is some sort of internal
>     > audio card in my cheap slow PC.
>     >
>     Check the BIOS whether you can:
>     Change the IRQ assignments
>     Disable the extra hardware using the same IRQ
>
>     Or otherwise try changing the slot it is in... I had very good results
>     in the past swapping card around
>
>     Good luck!
>
>
> I did a bit of investigation WRT the IRQ settings on this box. 
>
> 00:02.1 USB Controller: nVidia Corporation CK804 USB Controller (rev
> a3) (prog-if 20)
>     Subsystem: Hewlett-Packard Company Device 3207
>     Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 11
> --
> 01:05.0 VGA compatible controller: nVidia Corporation NV11 [GeForce2
> MX/MX 400] (rev b2)
>     Subsystem: Hewlett-Packard Company Device 3207
>     Flags: bus master, 66MHz, medium devsel, latency 64, IRQ 11
> --
> 02:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5721
> Gigabit Ethernet PCI Express (rev 11)
>     Subsystem: Hewlett-Packard Company Device 3209
>     Flags: bus master, fast devsel, latency 0, IRQ 11
> --
> 81:01.0 Network controller: Tiger Jet Network Inc. Tiger3XX Modem/ISDN
> interface
>     Subsystem: Device 79fe:0001
>     Flags: bus master, medium devsel, latency 64, IRQ 11
>
> So basically there's 2 network cards and a USB controller sharing IRQ
> 11 with the Openvox card. 
>
> I wasn't able to find any settings in the bios to manually configure
> IRQ assignments :(
>
> Could someone tell me how to set which IRQ the ISDN card picks up?
>
> -- 
> Tom O'Connor
>
> http://www.twinhelix.org
> tom at twinhelix.org <mailto:tom at twinhelix.org>
Hi,
Unfortunately is not always possible and it depends on how the mainboard
was realized. For what I can understand a lot of producers decide to
route only a subset of physical IRQ lines to the PCI slots (I think is
something related to cost reduction) and to share it with other onboard
peripherals.
This lets impossible to change the IRQ assignment for expansion cards.

This is not always true and sometimes swapping add-on cards solves the
problem.

We had better results with cards based on new Digium technology or with
Sangoma cards.

Best regards,
Marco Signorini.

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