It is simple SIP phone made for Univerity (PWr) Project purpose:
Metody obsługi i analiza możliwości protokołu SIP za pomocą narzędzi programistycznych
The project was made in Polish language, so part of gui interface you can find out is in Polish.
Project created only for a specifics test scenario and its not recommended to use in any commercial case (incomplete, without network security). (for educational purpose only)
Note: project will be abandoned as soon as we receive the grade :P We got highest grade (5.5), so project have been officially closed!