M4A The .M4A format is actually the audio
layer of (non-video) MPEG 4 movies.
M4P The .M4P format is an audio file pur-
chased from Apple’s Music Store (iTunes)
and is protected by a Digital Rights Man-
agement scheme.
NAV Navigation
POS Position
PTY Program type (radio)
RBDS Radio Broadcast Data System
SAT SiriusXM Satellite Radio
SDS Speech Dialog System
TMC Traffic Message Channel
VES™ Video Entertainment System
WMA Windows Media Audio Format
210 SYSTEM INFORMATION
