Core SMPP Protocol Commands

The classes in this section are direct object-oriented representations of SMPP PDUs. Each class maps to a specific SMPP command or its corresponding response - such as SubmitSm, DeliverSm, BindTransmitter, EnquireLink, and others. These abstractions eliminate the need to manually construct or parse binary PDU structures, allowing you to work with SMPP operations using strongly-typed, high-level Java objects.