yePhone - free calls

yePhone is an application that gives you free calls and sms. It is better than alternatives like Skype, Tango, Viber, Whatsapp, etc. becasue yePhone gives you:1. Support of standard and open protocols.2. Integration with an open and very used SIP provider: Ekiga.3. Calls with thousands of standard SIP phones over Windows, MAC and Linux.yePhone is a VoIP program which allows you to make phone calls over the internet. It can be used to call regular phones with the Premium version via any appropriate SIP provider. If your office or home phone works with SIP, you can use yePhone anywhere you have decent internet connection.Features highlight:- Telephony core system.- Video and voice calls.- SIP messages.- Image sharing.- Voice and video calls.- Scalability functions.- SIP support.- Call transfer, call hold.- Audio codecs.- Signalling advanced.