Could I do it?

Hi everybody!

I am new with arduino!

I am trying to make an Ip Telephone, so my question is if I could do it with an Arduino and an Arduino Ethernet. Obviously I'll need two Ip Telephones!
Will I need anything else for do it?

Thank you very much!

You will need something to output the voice and something to "hear" the voice in both sides too (speaker and microphone) .

After google it, it don't seams to return to mush results.
Maybe this one can help:

ayrton000e7:
Will I need anything else for do it?

You'll need to understand how VoIP works. Do you?