Final answer:
The basic functions of a Mobile Data Terminal include data transmission, GPS tracking, and Internet browsing, but not typically voice calls.
Step-by-step explanation:
The basic functions of a Mobile Data Terminal (MDT) generally include data transmission, GPS tracking, and Internet browsing. These features enable efficient communication and navigation capabilities for various sectors, particularly in emergency and transport services. However, standard MDTs are not typically equipped to handle voice calls as they are focused on data-related functionalities. With technological advancements, there are options for cheaper, faster, and better-quality data transmission, leading to more consumer choice and spin-off technologies that facilitate free Internet-based calling and video calling. Yet, when it comes to traditional MDTs, such expanded capabilities including voice calls might not be standard.