The focus is on simple usage (all settings are optional), attractive looks and interactive features like zooming and mouse tracking.
Zfone is our new secure VoIP phone encryption software. VoIP developers may license the Zfone Software Development Kit to add Zfone's ZRTP protocol to their VoIP applications. This SDK is suitable for inclusion in software VoIP clients, firmware for hardware VoIP phones, VoIP PBX servers, mobile VoIP clients, and SIP border control servers. The SDK enables your VoIP application to interoperate and make secure calls with the rest of the ZRTP community.