TDM400P vs. Openvox A400P

I am new at all this and am wondering what is the difference between these two devices? They look the same to me except for price. Is there any difference in voice quality?



The two cards you specify are of the same design. Both work fine, but neither come with onboard echo cancellation.

Check out for a good deal on the OpenVox cards. I offer a 90 day “no questions” return so if you install it and fine out you need a more expensive card with onboard echo canx, you are not out your initial investment on the OpenVox card. Also, when you sign up with a username, you’ll get a coupon for your first order that gives you an even bigger discount from listed prices.