MobileSoftPhone is an application that runs on a mobile device and uses the pjsip library to handle the SIP/VOIP communication protocol with PBX and other devices from a networkans is developed as a specialized soft phone that runs on Windows Mobile 5/6 Pocket PC and SmartPhone editionsThe soltuions was implemented as per the set of requirements with technical details as follows :

• .NET Compact Framework for developments
• Asterisk for PBX
• Session Initiation Protocol (via pjsip library)
• Voice Over Internet Protocol (via pjsip library)