Hello GillesToo, Asterisk "X100P" is just Intel IA92 WinModem. This is the so-called "clone" X100P, you can buy it on ebay for 15$ I used this last time like 5 years ago :) Main problems you'll face is echo and detecting line states (when remote party hangup or pick up a call) Wednesday, May 26, 2010 4:37:08 PM, you wrote: G> Hello G> In case there are system developers out there with good experience writing G> modem softare, considering that... G> 1. even a cheap OpenVox PCI card starts at $90 for just one FXO port G> 2. even entry-level PC's theses days have ample CPU power especially when G> just used a basic server with Linux G> 3. we've been using so-called softmodems (ie. controller-less modems that G> offload processing to the computer's CPU) for over a decade and they sell G> for about $10 as OEM G> 4. and finally, Digium/Asterisk's Zaptel driver was precisely meant to run G> on cheap voice cards G> ... I was wondering why no one has gone forth and written a driver for this G> kind of hardware, which would be great for SOHO users to handle just one G> landline. Is it because the hardware is not standard enough, and writing G> this kind of driver takes a lot of work? G> Thank you. -- Mike Tkachuk