Acronym Finder

MTD mobile system for the frequency band 450MHz. It, in 1971 in Sweden was raised, and, until 1987, continued, being, Service, Auto NMT was replaced. Network MTD finally 20 thousand users. with 700 students as employees for the operation.
MTD also in the countries of Denmark and Norway (since 1976) was created, which is the possibility of roaming with the Nordic countries.
the first mobile phone system in Sweden, the MTA was that, in 1956, was raised and until 1967 continued. It is a system of 150MHz was that in the cities of Stockholm and Gothenburg, with 125 common on the whole was available. The system of the latter, MTB cell phones talkie in 1962, was the year 1983 continued. It in the bands 76-77/5 and 81-82/5 MHz will reward, as well as in the city of Malmö, was available and about 600 common.
in Norway, the first mobile system OLT was in 1966 was raised. In 1981, with 30 thousand subscribers the cell phone system in the world....

Packet data, cellular digital (CDPD) of bandwidth usage that are typical for mobile phones AMPS at frequencies between 800 and 900 MHz can be used, for data transfer use. Speed up to 19.2 kbit/s, slightly higher than it might be.

in the 1990's development. CDPD is a technology for the future. However, it could hardly have with the system, more expensive and with lower speed Mobitex and DataTac competition. and never, completely common found, and the newer time standards, such as GPRS become more prominent.

CDPD customer a little bit. The company AT...

Gsm (GSM) or System Global Mobile Communications is one of the most commonly used standard mobile phones in the world. The main dealer, it's now GSM estimates that 80% of the market of global mobile phone of this standard. Three billion people in 212 countries from the standard interest will fall.The extensiveness of the standard international roaming between mobile phone operators common). This possibility to subscribers, enabling their cell phones in most parts of the world.

GSM, in principle, short words, the French Groupe Spécial Mobile (Group Special Mobile). The GSM technology earlier in the signaling channel, digital voice and that is why it as second generation mobile systems (2G) will be remembered. Also GSM for the first time, a cheap alternative (for network carrier) for the phone calls, offer. short message service(SMS), which is nowadays in other standards of the mobile phone is also supported. A another advantage of it is that the standard includes an emergency number ... 112,.

the newer version with the standard of the original GSM phones are compatible. For example, in version 97 standard functionality of the package data with the use of GPRS has been added. Version 99 with the use of technology EDGE send high-speed data offer....

Service message, multimedia, or the SMS standard communication to send the message that has the elements of multimedia (like photos, sound, video, text format). Message multimedia, the development of a Standard SMS. the possibility of sending messages with length over more, and with the benefit of protocol applications wireless to display the content it provides. The most common use it. sending photos from the phone camera....

JP's RSS is a service, information, mobile package is oriented to users of mobile phones GSM and IP-136 is available. This is a Value-Added Service in a new second generation mobile phone that lets you send and receive information or data on the mobile network provides.

GPRS stands for General Packet Radio Service (public service package, radio) is, in fact, the data switching circuit. JP audio, in fact, a layer of closed switch (Packet - Switched) network, GSM available in the mobile phone adds Your that much better than the standard communication, the switch circuit (Circuit Switched) GSM network.
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