Ava‘s Soft-phone software is an alternative for expensive network based telephones (IP Phone) or similar hardware equipment.
Features:
              SIP RFC-3261 protocol Support
               Simultaneous use of three lines as input and output
              G711 U-law, G711 A-law, GSM, iLBC Codecs support
              common call features Support such as call waiting, call diverting
               Ability to transfer calls between two numbers
               Compatible with Windows 7, XP, Vista
               Easy to install and use the system for the user
               Possibility of  customization for the customer