An enterprise wants to create its own SMS service and need you to develop it. Because it needs to be powerful and scalable you naturally choose to use Java Enterprise Edition Technologies. It's wants to create SupSMS to send SMS message from everywhere.
For build you should create à db supSMS and create in localhost:4848 a JDBC Connection Pools supSMS with JDBC Resources jdbc/SupSMS.
The first user created have Admin role.