The first thing you will need to do is build the JAR for the add-on. This involves generating code, so you must have an ASN1C SDK license in place. To run the build, use the provided Ant build script. Run ant build. The build will generate code using asn1c, compile the code, and produce the objsys_nas.jar JAR file.

The easiest way to get started using the add-on is to examine the test_* subdirectories within the package. These contain test programs for encoding and decoding all of the different message types defined in the standards. Typically, code from within these samples can be used to form larger programs that can encode or decode larger message sets.