This is a full featured and very small IAX based software phone for Microsoft Windows platforms (only). The application is distributed as a freeware for personal use. Click here to see the online help for a complete description of the application. Some of the main features are: registering with Asterisk PBX; supporting IAX2 protocol (only); can act as a remote PSTN/GSM/PCS/CDMA gateway for any Asterisk server; multiple audio codecs support (with auto-negotiation): aLaw, uLaw, GSM, iLBC, Speex; can register with multiple servers (max. 8); independent audio codec configuration for each registration server; fully support for the ATCOM AU-100 USB phone (http://www.atcom.com.cn/engweb/bUSBPhone.html); fully support for the Yealink USB phone (http://shop.voismart.it/products.php?cat=12); fully support for the Eutectics Inc. USB phones (http://www.eutecticsinc.com/products/products.html); web browser integration (start app and/or dial using a link like diax://number/alias); configurable audio latency;