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GSM: Digital Cellular Phone Systems

3G UMTS GSM: cellular phones / systems

New and updated information

Check out new and updated information about
GSM and 3G / UMTS here:

http://3g.cellular.phonecall.net/

GSM Explained

This site is dedicated to Wireless Mobile Communication Systems: GSM 900, GSM 1800, GSM 1900, CDMA, UMTS etc. GSM is short for "Global System for Mobile Communication". The GSM and other wireless systems are accessed using a handy, mobile phone, cellular phone, cellphone aka. mobile. GSM is a global standard, GSM 900 being used in most european, asian and pacific countries, GSM 1800 being used in the same place to increase the capacity of the system, and GSM 1900 being used primarily in the US.

GSM Overview

The overview of GSM you find on this site can be read in sequence by readers without deep technical knowledge. Start here, and just push the continue button on each page.
Readers with a particular interest, can jump directly to the section of interest listed below, or search the site.
  1. Key Players in GSM: user - operator - distributor - handset supplier - network supplier
  2. Key entities in GSM: cellular phone - radio station - network - user
  3. The cellular GSM phone is a radio: Frequencies and timeslots
  4. GSM speech signals are digitally coded: compression and error correction
  5. Controlling the communication in GSM: Where is the cellular phone - initiate and receive a call
  6. The GSM radio station: Antenna - Equipment box
  7. Many GSM radio stations form a GSM network:The secret behind a cellular network
  8. Why do I not have coverage in GSM: Due to network design or due to the rollout
  9. What the GSM network architecture looks like: MS BTC BSC MSC

Search for GSM information

Search this site
Search for all these words (AND)
Search for any of these words (OR)

Books about GSM

GSM made simple If you want to read an easy book about GSM, I would recommend:

GSM Made Simple
A non-technical explanation of GSM. Written in non-engineering language for anybody who needs to understand how Global Systems for Mobile Communications work.
Buy it from Amazon.com

Or buy other GSM related books here

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