Voicent dialer software can make 60 call per hour per phone line,
if your message is 30 second long. If you make 10 hour
calling for a day, you can make about 600 calls per phone line.
You need 16 phone lines to make 10000 calls a day. Since each computer
have average 3-4 PCI slots to install 3-4 voice modem, one computer can
connect 3-4 phone lines. Therefore you need 4-5 computers to support
total of 16 phone lines.

Feel free to download and try before you buy at

http://www.voicent.com/download

>
> I need to purchase a phone-dialing software that can make about 10,000 calls
> a day in a particular zip code. I have a dedicated server plus high speed
> internet at my office with extra computers; that could be dedicated to this
> task.
>