Express Talk is software that works like a telephone to let you make calls from your PC. 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. Express Talk is designed to be very easy and intuitive to use. Within minutes you will be able to setup the software and start making phone calls. Express Talk is free. Features: ~ Lets you make internet phone calls free direct PC to PC, or PC to phone via a VoIP SIP gateway provider.. ~ Supports caller ID display and logging. ~ Includes a phone book with quick dial. ~ Integrates with Microsoft Address Book. ~ Supports emergency numbers calling (such as 911, 999, 000). ~Can be configured to work behind NATs and Firewalls. ~Includes data compression (GSM, uLaw, ALaw, PCM and G726), echo cancellation, noise reduction, comfort noise and more. ~Supports video (H263, H261) for webcams or IP Phones .