[Asterisk-Users] Where to get (cheap) VoIP

[Christian faucher]

Hi,

I would like to deploy a (very) small PBX at my place, so that I can
stop answering phones for my kids or my wife, using distinctive
ringings.

I read that, using a modem,I can use a standard phone line, and
"convert" that as input for Asterisk PBX, right?

Also, where can I get VOIP phones?  Does Asterisk work with *any* PBX
phones?  Any brands to recommand?

Thanks in advance for you answers!

Christian Faucher