voip needed like paltalk help will pay $ if u

willing to pay $ if u make smooth voice like paltalk or recommened me some service so i can attach the voice to my chat client.

i need something that has talk button , if 1 user from 1 end talks the other user mic should drop , do no wish all to join in same time and clogg it upp,,,,,,,,,,,,,, this is a general question scientist isnt needed:p:p:p:p:p:p:p