JDUN - Java Dial-up Networking API For Windows - Version JDUN provides a dial-up networking (DUN) Java interface for use with Windows operating systems. Microsoft remote access services (RAS) can be accessed such as enumerating DUN phonebook entries, dialing connections, and hanging up connections.You can now add dial-up capabilities to your Java application with ease. There are thress licensing options: Individual (1 developer), Team (5 developers), & Site (unlimited same site developers).The trial version only allows three attempted connections, then must be restarted.