M2M Connection Mobile Network
The widespread availability of cellular data networks presents another choice for machine-to-machine (M2M) communication. Mobile telephony can be used to establish access to many sites where it is difficult to place land lines, such as in offshore applications, in the mountains, on the roof of a building, or next to a highway. Whether used in location tracking devices, mobile Ethernet gateways, or for wireless data collection, cellular M2M offers mobility, encryption, more location options, and easier installation in a single package. For many situations, cellular M2M presents advantages that cannot be matched by hard wired solutions, analog carriers, or satellite connections.

Cellular Network Technology
Modern wireless technology connects more than 2 billion cell phone users worldwide, with more than four times as many devices used to manage connections. In different areas and countries, cellular operators offer different services. GSM is used almost everywhere, with upgraded service possible through GPRS and EDGE. GSM is considered 2G, GPRS is sometimes called 2.5G, and EDGE may be considered 2.75G. EDGE stands for "enhanced data rate for GSM evolution" and provides significantly better data transmission speeds. As for 3G, WCDMA/UMTS is the leading protocol for current GSM operators. In addition to GSM, CDMA/CDMA2000 systems that provide both voice and data services are also implemented in parts of the US, Australia, Japan, South Korea, and other countries. The different systems are compared in the following table.

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