15. FrontlineSMS (II) FrontlineSMS Mobile user 8880, “JOIN-AGRI” “ Welcome to the agriculture SMS forum. Get ready for receiving info!” Seasonal tip: xxxxxxxxx Upcoming meeting: xxxxxxxxx 8880, “LEAVE-AGRI” “ Thanks for using our service. See you soon!” A new user register sending an SMS to 8880 with the keyword JOIN-AGRI The registered used receives a welcome SMS with the confirmation Broadcast SMS are received by the user on different topics The user unsubscribes sending LEAVE-AGRI to 8880 A confirmation is sent by the system The user is registered in the group AGRI. Predefined confirmation SMS is sent The user is unregistered from the group AGRI. Predefined confirmation SMS is sent Broadcast SMS are sent according to the service