Function of GSM

One of the main purposes of the GSM network is to facilitate easier access to cellular and satellite platforms across international lines. Using digital technology, it employs both speech and data channels in its system. At minimum, these channels operate on the second generation (2G) network, but many use the third generation (3G) system or higher to offer these services to clients.

This enables the exchange of information at high-speed data rates via satellites and mobile cellular towers across networks and company lines. For example, a person in Tokyo can text message someone in Toronto via Japan's system, through networks in the countries between, until it finally arrives on the recipient's mobile device in Canada. In particular, the network has been essential in establishing worldwide access to emergency telephone services using the digits one-one-two (112), redirecting global phone traffic to emergency responders in a user's proximity. It is also responsible for establishing text message technology during the 1990s.