Express Talk is software that works like a telephone to let you make calls on your Mac OS X. With Express Talk you can call anyone on the internet who has installed Express Talk (or any other SIP voip softphone). Calls are free. You can also call ordinary telephone numbers anywhere in the world if you sign up to a gateway service. It uses the SIP protocol and is compatible with most major VoIP SIP service providers.
Make voice and video calls free between computers Supports PC to phone via a VoIP SIP gateway provider More information on VoIP Place callers on hold (on-hold music included) Supports caller ID display and logging Includes a phone book with quick dial configuration Integrates with Microsoft Address Book. Data compression, echo cancellation, noise reduction and comfort noise Supports emergency numbers calling (e.g. 911, 999, 000) Can be used with USB phones, Headsets, Microphones, a Webca
Configure up to 6 phone lines Call conferencing for up to 6 people Phone call recording Voice commands Call transfer Do Not Disturb Push to talk intercom Call Pickup allows you to answer on another extension