Dialogue is a simple Mac application that uses bluetooth to connect your Mac with your phone. It allows you to answer and make normal phone calls over your Mac. It's as simple as that.
After connecting your phone, Dialogue warns you for incoming calls. You can also search a contact from your addressbook or type in a phone number to make a call. Furthermore, Dialogue lets you record your conversations to play them over and over again.
For good and stable audio quality, you need to use a headset while making phone calls with Dialogue.