H.2 File type considerations
23.0403GPPRelease 17Technical realization of the Short Message Service (SMS)TS
The SP-MIDI content can be stored in, a Standard MIDI File (SMF) of type 0 or type 1 [40]. In a type 0 SMF, one header chunk and one track chunk is used. In a type 1 SMF one header chunk and several track chunks are used. SMF type 2 should not be used