See Table 1. explains the acronyms used throughout this manual.

Table 1. Acronyms

ACRONYM	DESCRIPTION
AVC	Automatic volume control
CB	Citizens band
CVO	Custom Vehicle Operations
EITMS	Engine idle temperature management system
GPS	Global positioning system
POI	Point of interest
PTT	Push to talk
RDS	Radio Data System
RBDS	Radio Broadcast Data System
THD	Total harmonic distortion
TMC	Traffic message control
TPMS	Tire pressure monitoring system
VOX	Voice operated transmission
WHIM	Wireless headset interface module