[Asterisk-Users] FXOs

[Steve Totaro]

>
> Have ran both the x100p's and tdm04b (4-port fxo) for several months.
> In the US, both are usable however the software drivers still are in
> need of some serious help. Most of the issues revolve around:
>  - interrupts, pci bus or something like that resulting in echo
>    (which appears to be system/motherboard dependent), and echo
>    cancellation functions that have only a limited range,
>  - transmission levels (rxgain/txgain) are not anywhere near useful
>    outside a rather limited range (without causing other problems)
>  - less then stable causing failures that result in having to reboot
>    the entire system (stopping and restarting * and the drivers do
>    not always work).
>  - callerid reliability runs about 80% of what a cheap analog phone
>    bridged onto the pstn line displays.

I have a customer with a tdm04b and echo problems.  I have tried the
suggestions in the wikki and everything I could come up with.  You say
system and MB dependant, have you found a setup that does not introduce
echo?  I am running on a Dell sc400.

Has anyone actully fixed this issue?  If so, how?