On 06/05/09 13:43, Vincent wrote: > Hello, > > I'm looking for a dirt cheap solution for SOHO use to handle at most > a couple of POTS lines, and I notice that X10?P cards go for $15 on > eBay as opposed to $90 for an OpenVox card or over $200 for a Sangoma. > > I have a couple of questions about those cheap FXO cards: > > 1. Are they all glorified softmodems, ie. none has an on-board CPU or > DSP and outsources all processing to the computer's CPU? > > 2. Are they all bad, no matter what chipset is used (Intel, Motoral, > Ambient)? If not, which offer good enough quality to handle a single > POTS line? > > 3. Why are they often bad quality? Because the driver itself is badly > written? Because PC's don't have enough speed to handle the tasks > using their own CPU (hard to believe, but I don't know)?
Hi Vincent, I bought a cheap "eBay" X100p card over a year ago. When I first tried it was appalling. I couldn't get rid of the echo and noise no matter what. I then came across OSLEC (at the time a new Free Echo Canceller). A bit of hacking to get it to work and hey-presto! No more echo. I have been using the same card ever since with no noticeable issues. I think OSLEC is now the default EC for many distributions so I would have thought you will be fine although, of course, YMMV. For a cheap backup to your VOIP service they do the job. I wouldn't use them for a "proper" system though. HTH Al _______________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
