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First Generation Mobiles (TACS)

TACS was the technology used by Vodafone and Cellnet when they first launched their UK networks. The services offered were mainly voice calls, which were prone to

Eves Dropping and Cloning This was due to analogue technology limitations. Luckily most of the UK networks have now evolved to using digital technology, which utilises complex encryption techniques....read more

Second Generation Mobiles (GSM)

GSM is currently being used by all four UK operators to provide their national mobile service. This is also known as 2G in the industry. The services include voice, e-mail, SMS . The level of coverage varies from region to region hence it is important to check whether you have coverage in your area prior to purchasing. WAP is a feature that enables mobile access to the Internet but this service has not been successful due to it’s capacity limitations. There is a GPRS service currently being offered by some of the operators and this is known as 2.5G in the industry. GPRS is geared towards offering better data services and is a migration step to third generation mobiles.....read more

Third Generation Mobiles (UMTS)

UMTS is said to be the future of mobile communications, which is currently being planned by the four existing network operators along with a fifth operator called Hutchinson 3G. As you may have guessed this is known as 3G in the industry and is aiming to provide new services utilising voice, data, video, multimedia etc. at capacity up to 2Mbps. The packages initially will be aimed at business users due to the high licence and deployment cost.....read more

Worldwide Networks & Global Roaming

Japan has deployed PDC as a second-generation system, while in Korea IS-95 is used for both cellular and PCS system. China, Russia and South Africa currently have networks operating using GSM 900 and 1800 systems. The networks in United Kingdom, United Arab Emirates and Honk Kong have some ETACS 900 systems but mainly use GSM 900 and 1800 systems. USA has many networks utilising GSM 1900 and CDMA 800 & 1900 systems. The network system such as GSM is most commonly used throughout the world however there are some older systems in use that are not mentioned here. Triple band GSM mobiles capable of handling 900, 1800 and 1900 systems will allow connections to a large proportion of the world networks.....read more

UK Spectrum Allocation

The frequency spectrum is split into different global regions, which are then divided by countries and then sub divided within the country. There is only a limited range of frequencies available and these are allocated by the UK Radio Authority (RA)....read more

Network Technology

GSM and UMTS network architecture diagrams are used to illustrate the features and capabilities of these technologies. Description of the system components and their interactions with each other provide an insight into the world of mobile network technology…read more

Health & Safety

Mobile phone and base station health and safety issues, what are the implications, how can you ensure safe mobile usage, what precautions should you be taking...read more

Handset Technology

GSM Mobile Station (MS) comprises of a Mobile Equipment (ME) and a Subscribers Identity Module (SIM)....read more