How do I send SMS messages?

The SMPP component can be used to send SMS text messages. In order to send a message, generally you will need to specify an SMPPServer, an SMPPPort, a User and Password, and sometimes a SystemType. For example:
        smpp.SystemType = "systemtype";
        smpp.SMPPServer = "";
        smpp.SMPPPort = 1234;
        smpp.AddRecipient(0, "19195555555");
        smpp.Connect("username", "password");
        smpp.SendMessage("Lets have lunch!");

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