On 3/1/06, Jim Van Meggelen <[EMAIL PROTECTED]> wrote: > Not so. > > Both Digium and Sangoma offer cards that have on-board hardware-based echo > cancellation.
Well, almost. The 4 port FXO/FXS cards don't have a hardware echo cancellation available, but the TDM2400P does (I'm talking Digium hardware here). The TDM411P (3.3v) and TDM406P (5v) also have the option of the hardware echo cancellation. Other than that, the rest is done in software -- I can't comment on Sangoma hardware as I have no experience with it. I believe the original discussion was for low density lab cards though -- which would tend to rule out any of the above hardware echo cancellation options. -- Leif Madsen. http://www.leifmadsen.com http://www.oreilly.com/catalog/asterisk
