Use the computer like a phone

Try Skype:

http://www.skype.com/download.html

Note that the one you talk to must have the same software installed. If you want to call to anyone you need look into IP telephony and get an account for it. Check with your telephone provider.

Regards
Peter

[Note that the one you talk to must have the same software installed]

So I can't talk to somebody who, for example, haven't got a computer?

[you need look into IP telephony]

What is IP telephony? I heared that it is an integrated Windows tool, isn't it? Where I can find it in Windows XP?

I used to use www.dialpad.com
I am not sure if that site is still around or the same, but it allowed me to make long distance calls for free.

MSN Messenger has a voice module but the person on the other end still needs the same software. Therefore, yes they also need a computer.

There is nothing installed on XP that will allow you to place a call into the PSTN.

Kent

What I don't understand, that the way all these programs works. Why is it different than simple phone calls? Maybe there is a way to make in sort of giving the phone number to the computer's program, and than paying to telephone provider like if I use a phone and not a computer...

What is IP telephony
http://www.voip-calculator.com/

Some entreprises which works with clients (support via phone...) have their agents working on the computer ans speaking with clients through computer too. How do they do?

With a dedicated VoIP solution from a vendor like Nortel or Cisco. Installations are most often large and cost several thousand dollars per phone.

They have gateways that negotiate the transition from the PSTN to the software on the PC. You may be able to get a consumer service similar to that from your local telephone provider or perhaps your cable TV provider.

Kent