Erlang modules were created using Tuscany Java SCA 1.4 version.
To run JUnit tests you need to run Erlang Port Mapper Daemon (Epmd) which can be found in Erlang distribution:
http://erlang.org/download.html

To build modules you need jinterface library. I didn't found it in official maven repositories, so solution is to add it manually to your private maven repository. It can be done by executing:

mvn install:install-file -DgroupId=jinterface -DartifactId=jinterface -Dversion=1.4.2 -Dpackaging=maven-plugin -Dfile=OtpErlang.jar

OtpErlang.jar file can be found in official Erlang distribution:
http://erlang.org/download.html
or here:
http://people.apache.org/~wjaniszewski/OtpErlang.jar