Full form of GSM

Full form of GSM is Global System for Mobile Communication.

GSM is developed by ETSI (European Telecommunication Standards Institute) for describing the protocols for 2G cellular networks. It is used as the replacement for 1G networks.

GSM is a digital open radio network which can be operate in all the countries. It’s not only used for voice calls but it also used for text messages and data storage.

There are three different frequencies on which the GSM standard operates:

900 MHz – Used by original GSM system.

1800 MHz – To support for the increasing number of subscribers.

1900 MHz – Mostly used in the US.

GSM Characteristics

In the almost most part of the world, GSM operate on mobile communication bands of 900 MHz and 1800 MHz.

GSM working is done by dividing every 200 kHz channel into 25 kHz time slots because it is a circuit switching system.

For transmitting the signals, GSM uses the narrowband TDMA (Time Division Multiple Access).

Advantages of GSM

It is well suited for wide range of devices.

Unlike CDMA technology, it allow for make use of data and voice calls at the same time.

The another demanding and interesting feature is the clarity of voice calls.

The information stored on a SIM card cannot be duplicated, as it is a highly secured.

Disadvantages of GSM

It is a more complicated system.

The transmission can face the interference even multiple users share same bandwidth. Like 3G newer cellular network, it makes use of CDMA technology.

Because of using pulse transmission technology, it can also interfere with electronics equipment.

Therefore, to avoid this electronic interference, cell phones are put on airplane mode in Airplanes and hospitals.