M2M
(Machine to Machine)
In the world of cell phone networks, M2M refers to devices other than cell phones using the wireless network to communicate with other devices or networks.
Typically, a small device known as an M2M module is embedded in a larger device that needs to communicate over the wireless network. The M2M module contains the same type of radio and data circuits that would be found in a typical cell phone, but nothing else (no display or keypad, etc.)
M2M modules can be embedded in things such as vending machines, automobiles, alarm systems, and remote sensors.
