LJ9696 0-3: Indicates the relationship of the two channels; they might be unrelated audio data, a stereo pair, duplicated mono data, music and voice commentary, a stereo sum/difference code. Byte 1: indicates if the audio stream is stereo, mono or some other combination. This indicates how the aux bits (time slots 4-7) are used. 0-2: Aux bits usage. The M9 was required to fire 5,000 rounds, while data from Beretta shows the average reliability of the M9 pistol to be 17,500 rounds without a stoppage.|Biman Bangladesh Airlines