[Asterisk-Users] TDM04B problems

[Rich Adamson]

> I have a TDM04B installed that isn't working 100% with Asterisk. I'm
> using the cvs-head of the zaptel drivers and asterisk with FC3 on a 2.6
> kernel.
> 
> I have successfully created a call on one of the channels, but there are
> a few problems. Even on channels with no analog line connected to them,
> after a few seconds (without reporting ringing) Asterisk will report
> that the call has been answered. On channels that have an analog line
> connected to them, I just hear some static that is light and pretty
> consistent. For some reason, the last channel seems to always give very
> loud and harsh static.
> 
> My configuration appears to be correct based on other posts that I've
> read. I've read some documentation that says that the zaptel card should
> not share IRQs, especially not with an ethernet card. Well, my card
> shares an IRQ with the ethernet card. Turning off USB, parallel port,
> ACPI, APIC, etc. does free up a great deal of IRQs, but Linux
> 2.6.11-1.27_FC3 still allocates them to the same IRQ.
> 
> Is this likely to be the problem? Are there known issues with this
> configuration? Does anybody have any advice on how to configure the
> kernel not to share those IRQs?

I have the same config & OS and don't have any major problems. The irq
sharing is very likely contributing to the problem.

Given what you're tried above, try moving the TDM card to another
slot on the motherboard. It will likely be assigned to a different irq.
If you don't have any other slots, consider replacing the mobo.