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Topic: GSM frequency ranges


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GSM

In the News (Sun 22 Nov 09)

  
  NationMaster - Encyclopedia: Mobile phone operator
GSM services are a standard collection of applications and features available to mobile phone subscribers all over the world.
Radio frequency, or RF, refers to that portion of the electromagnetic spectrum in which electromagnetic waves can be generated by alternating current fed to an antenna.
GSM frequency ranges are the radio spectrum frequencies that the GSM system for mobile phones operate under.
www.nationmaster.com /encyclopedia/Mobile-phone-operator   (584 words)

  
  GSM superpage - gm
GSM differs significantly from its predecessors in that both signalling and speech channels are digital, which means that it is seen as a second generation (2G) mobile phone system.
GSM retained backward-compatibility with the original GSM phones as the GSM standard continued to develop, for example packet data capabilities were added in the Release '97 version of the standard, by means of GPRS.
GSM is a cellular network, which means that mobile phones connect to it by searching for cells in the immediate vicinity.
www.dotcompa.com /GIMP/GSM.php   (1920 words)

  
 EVP Frequency Ranges
We perceive speech mainly in the frequency range of 500 Hz to 3000 Hz.
Pitch is often used synonymously with frequency; the higher the pitch, the higher the frequency.
The ELF frequency range is critically important to the Navy because of its value in providing a way to communicate with submerged submarines.
www.paranormalghost.com /evp_frequency_ranges.htm   (1964 words)

  
 Ireland Information Guide , Irish, Counties, Facts, Statistics, Tourism, Culture, How
GSM differs from its predecessors most significantly in that both signalling and speech channels are digital, which means that it is seen as a second generation (2G) mobile phone system.
GSM has remained backward compatible with the original GSM phones, at the same time, the GSM standard continues to develop and packet data capabilities were added in the Release '97 version of the standard with GPRS.
GSM's main competitor, CDMA2000, is used primarily in the United States, although it was seeing increased, but limited, worldwide adoption as a stepping stone to a 3G standard when WCDMA did not appear to be fully functional.
www.irelandinformationguide.com /GSM   (2183 words)

  
 Tri Band GSM Article   (Site not responding. Last check: 2007-11-02)
The key specification of the required frequency mask of the handset exists at 400 kHz offset from the carrier where the signal must be -60 dBc measured in a 30-kHz bandwidth.
Frequency pushing of the synthesizer or crystal-reference oscillator can occur when the PA and other active circuits are enabled.
The RF synthesizer frequency range was chosen for high-side mixing in the cases of GSM-1800 and GSM-1900, resulting in an RF LO frequency range of approximately 2050 to 2250 MHz.
www.rfengineer.cc /tribandgsm.htm   (3957 words)

  
 GSM frequency ranges - Wikipedia, the free encyclopedia
GSM frequency ranges or frequency bands are the radio spectrum frequencies designated by the ITU for the operation of the GSM system for mobile phones.
In Australia, GSM 850 is the frequency allocated to Telstra's NextG Network which was switched on in October 2006.
In Canada, GSM-1900 is the primary frequency used in urban areas with 850 as a backup, and GSM-850 being the primary rural frequency.
en.wikipedia.org /wiki/GSM_frequency_ranges   (1052 words)

  
 Description
Because it uses radio frequencies, GSM is a wireless platform, in contrast to technologies that require connecting one's laptop modem to a telephone outlet to use the land-based telephone network.
GSM can be fully mobile, and do wire-less data computing anywhere, without worrying about adapters, telephone jacks, cables, etc. The unique roaming features of GSM allow cellular subscribers to use their services in any GSM service area in the world in which their provider has a roaming agreement.
GSM 1800 (also called PCN (Personal Communication Network), and DCS 1800) - operates in the 1800 MHz frequency range and is found in a rapidly-increasing number of countries including France, Germany, Switzerland, the UK, and Russia.
www.emory.edu /BUSINESS/et/P98/gsm/description.html   (723 words)

  
 GSM 400 Spectrum
GSM 400 is a band that brings access to this world-leading standard for NMT 450 operators, as well as offering a coverage bonus effect to current GSM operators worldwide.
The commitment of Nokia and Ericsson to the development of GSM 400 is illustrated in the fact that they have already made the first official GSM 400 call at the GSM 400 Conference in Budapest, Hungary in September 1999.
GSM 400's requirement for fewer base stations reduces installation time, which in turn leads to reduced time-to-market, enabling new operators to start earning revenue and capture market share more quickly.
www.cellular.co.za /gsm_400.htm   (868 words)

  
 GL Communications - GSM Protocol Analyzer   (Site not responding. Last check: 2007-11-02)
GSM standards are used to provide the interface between the various entities in GSM network.
GSM 900 (operates in the 900 MHz frequency range and is the most common in Europe and rest of the world),
GSM 1800 or DCS 1800 (operates in the 1800 MHz frequency range and is found in a rapidly-increasing number of countries including France, Germany, Switzerland, the UK, and Russia)
www.gl.com /gsmanalyzer.html   (1199 words)

  
 APMS Article - CDMA, GSM and AMPS
FREQUENCY HOPPING is typically accomplished by rapid switching of fast-settling frequency synthesizers in a pseudo-random pattern.
GSM uses a variation of time division multiple access (TDMA) and is the most widely used of the three digital wireless telephone technologies (TDMA, GSM, and CDMA).
GSM is the de facto wireless telephone standard in Europe and, according to IEEE Spectrum, is being used in more than 150 networks in 86 countries.
www.apms.com.au /papers/cdma.html   (1360 words)

  
 Mobile Phone Rental, International Cell Phone, Convert PAL to NTSC, Satellite Communications
GSM (Global System for Mobile Communications) leads the world as the fastest growing, most reliable and advanced digital technology available in the marketplace today.
GSM operates on the multiple spectrum frequency bands used around the world - 1900MHZ, which is used in North America and 900MHz and 1800 MHz for other locations.
GSM customers can use their phone service at most of the tourist destinations in the world including Europe, Asia (except for Japan and Korea), Africa, the Middle East, Australia, New Zealand, India, China and other countries and most major cities in the United States and Canada.
www.quantumstar.com /myinfo.php?info=buyersguidegsm   (825 words)

  
 Introduction to GSM   (Site not responding. Last check: 2007-11-02)
Global System for Mobile Communication (GSM) is a set of ETSI standards specifying the infrastructure for a digital cellular service.
The IMSI is a unique non-dialable number allocated to each mobile subscriber in the GSM system that identifies the subscriber and his or her subscription within the GSM network.
Once the range of IMSI numbers has been determined, the HLR can be populated with the new IMSI records that will be configured and activated at a future date by authorized sales or service subscription representatives.
www.pt.com /products/gsmintro.html   (1591 words)

  
 GSM frequency ranges
GSM frequency ranges is one of the topics in focus at Global Oneness.
GSM frequency ranges, GSM frequency ranges - GSM frequency bands, GSM frequency ranges - GSM-900 and GSM-1800, GSM frequency ranges - GSM-850 and GSM-1900, GSM frequency ranges - GSM-400, GSM frequency ranges - GSM frequency usage in the Americas, GSM frequency ranges - Multi-band and multi-mode phones
The network behind the GSM system seen by the customer is large and complicated in order to provide all of the services which are required.
www.experiencefestival.com /gsm_frequency_ranges   (1138 words)

  
 TrioTek - GPRS   (Site not responding. Last check: 2007-11-02)
There are three main data transmission options over GSM networks, each of which is at different levels of development.
GSM was the first digital standard to offer commercial circuit-switched data service.
GSM is the world's leading digital wireless technology with extensive coverage and subscriber bases.
www.triotek.com /gprs.html   (737 words)

  
 GSM   (Site not responding. Last check: 2007-11-02)
GSM 1800 (also called PCN (Personal Communication Network), and DCS 1800) — operates in the 1800 MHz frequency range and is found in a rapidly-increasing number of countries including France, Germany, Switzerland, the UK and Russia.
GSM is a standard that ensures interoperability without stifling competition and innovation among suppliers, to the benefit of the public both in terms of cost and service quality.
GSM is a complex standard, but that is probably the price that must be paid to achieve the level of integrated service and quality offered while subject to the rather severe restrictions imposed by the radio environment.
triton.cc.gatech.edu /ubicomp/185   (6379 words)

  
 GSM
GSM networks operate in the frequency range 890-915/935-960 Mhz by means of 124 duplex radio channels, each of which is 200 Khz in bandwidth.
The frequency split between these two bands is 45 MHz which is also the bandwidth between the transmit and receive frequency of the GSM terminal.
The GSM terminal is the transmission interface between the subscriber and the GSM network.
www.hackcanada.com /blackcrawl/cell/gsm/gsm-basic.html   (2221 words)

  
 Alphium - Producten
Encrypted speech is transmitted on the transparent GSM data channel.
The TopSec GSM is suitable for encrypted end-to-end voice communication in the GSM frequency ranges of 900 MHz and 1800 MHz.
Or encrypted calls can be made from the TopSec GSM to the landlie network: the only prerequisite is that the called ISDN station must be protected by a TopSec 703+ of the TopSec product family.
www.alphium.nl /nl/product.php?product=topsecgsm   (313 words)

  
 iMobile.com.au - Phone Technology
However, operators in many countries, including Australia, are introducing GSM networks operating on the 1800 MHz frequency range as a cost effective method for fast and flexible capacity increase as a result of the growth in mobile phone usage.
As previously stated different countries operate on different frequencies with most of the world operating on the 900 MHz frequency range, the United States operating on the 1900 MHz range and an increasing number of countries including France, Germany, Switzerland, the UK and Russia operating on the 1800 MHz frequency range.
If roaming to a destination that uses the same GSM frequency as your home operator then as long as your home operator has a roaming agreement, exchanges of billing information, with the foreign network you will have no problems using your mobile phone.
www.imobile.com.au /PhoneTech/default.asp?ID=techmay0001   (468 words)

  
 Is 3g compatible w/ Edge?
I thought that WCDMA was working on higher frequencies; 850mHz is a GSM frequency, not a 3G one (they have to be separated out).
So far, the two frequency ranges were the 1900 and 2100, which were pretty much the standard (as I knew it).
Further on edge - most gsm networks that support gprs have the technology to go for an edge solution, to bridge the gap between GPRS and 3G, but a lot in the UK appear to have been unwilling to go that route, even though its a relatively simple process.
www.gsmarena.com /forum/viewtopic.php?p=67801   (704 words)

  
 Slow Travel - Cell Phones in Europe, SIM cards, Italy, France, renting, buying, mobile phones
If you have a GSM cell phone that you use in the US or Canada, you can use that same phone if it is unlocked and works on European frequencies (this is very important and is explained in the How to Choose Your GSM Cell Phone below).
GSM World has a good chart showing you the frequencies used for all countries and cell providers.
I recently took a GSM Dual Band cell phone to the UK, but was not able to use it with the Orange network, because they used the 1800 MHz and my phone did not have that frequency (even though it was called a "World Phone", it was only Dual Band - GSM 900/1900).
www.slowtrav.com /europe/cell_phones.htm   (3763 words)

  
 GSM Cell Phone Buyer's Guide
It was first introduced in Finland in the year 1991 and by the end of 1997 GSM service became the accepted standard in over 100 countries around the world and is now the de facto standard in Europe and Asia.
The GSM service available in North America is of a totally different frequency of 1,900 MHz and sometimes 850 MHz, which is different from the standard of 1,800 MHz.
The GSM has made roaming between operators a very common affair, facilitating the users to carry their mobile in almost every part of the world.
www.planetomni.com /FAQ_gsm.shtml   (2624 words)

  
 Howstuffworks "How International Cell-Phone Service Works"
In this part of the world, GSM operates in the 900-MHz and 1800-MHz frequency ranges.
GSM is also used in the United States, but it operates at the 1900 frequency.
Planet Omni's GSM phones are all "unlocked," meaning they work with any international GSM SIM card.
www.howstuffworks.com /planet-omni.htm   (560 words)

  
 Endoacustica - Crypto GSM encrypted speech is transmitted on the secure GSM data channel
The use of wiretapping has become so widespread, simple and uncontrolled that you must assume that records of your private calls end up in the wrong hands.
Equipment for wireless interception of mobile phone calls has become available at such low prices that it is deployed frequently even in comparatively small business conflicts.
The GSM-Crypto hardware is based on a standard GSM equipped phone.
www.endoacustica.com /english/details_gsm_crypto_en.htm   (638 words)

  
 Global System for Mobile Communications - Wikipedia, the free encyclopedia
GSM has used a variety of voice codecs to squeeze 3.1kHz audio into between 6 and 13kbps.
GSM was further enhanced in the mid-nineties with the GSM-EFR codec, a 12.2kbps codec that uses a full rate channel.
Finally, with the development of UMTS, EFR was refactored into a variable-rate codec called AMR-Narrowband, which is high quality and robust against interference when used on full rate channels, and less robust but still relatively high quality when used in good radio conditions on half-rate channels.
en.wikipedia.org /wiki/Gsm   (1863 words)

  
 Support - how to capture streaming video,record streaming audio,rm to mp3   (Site not responding. Last check: 2007-11-02)
GPRS stands for General Packet Radio Service, and is a step in the evolution of a GSM network towards 3G.
GSM is still most commonly used in Europe, but it is also deployed in other areas of the world.
GSM operates in 3 frequency ranges - GSM 900, GSM 1800, and GSM 1900 (also called PCS 1900).
www.streamingstar.com /support_research_glossary_g.htm   (115 words)

  
 GSM World - Membership
A copy of the frequency allocation from your regulator stating the frequency ranges in MHz, e.g.
If English is not the original language of the licence, please submit an official English translation of the licence and the frequency allocation which has been certified by a public notary or equivalent.
GSM and the GSM Logo are registered and owned by the GSM Association.
www.gsmworld.com /about/membership/membership.shtml   (234 words)

  
 telefoni satellitari vendita noleggio telefoni skype
The Crypto GSM is the first tap-proof mobile telephone on the market.
The Crypto GSM is suitable for encrypted end-to-end voice communication in the GSM frequency ranges of 900 MHz and 1800 MHz.
Or encrypted calls can be made from the Crypto GSM to the landlie network: the only prerequisite is that the called ISDN station must be protected by a Crypto 703+ of the Crypto product family.
www.speeka.com /e_n_rs35-home.asp   (332 words)

  
 Notes on GSM   (Site not responding. Last check: 2007-11-02)
From a customer perpective, there are really only 2 parts to the GSM network, a cell phone and the "other end".
FDMA divides the frequency ranges for GSM, which are 890-915, 935-960 and some others that the book didn't have.
Each of these algorithms is a trade secret and only released to people who the GSM committee determines has a need-to-know.
www.acm.uiuc.edu /sigmil/talks/gsm/gsmnotes.html   (1485 words)

  
 IEEE Spectrum: Unsafe At Any Airspeed?   (Site not responding. Last check: 2007-11-02)
The two principal frequency bands are the cellular band, 824 to 849 megahertz, which uses a combination of analog and digital technologies, and the PCS (Personal Communications Services) band, 1850 to 1910 MHz, which is all digital.
Other frequency ranges are increasingly being used for cellular service, such as Integrated Digital Enhanced Network (iDEN), in the 806 to 821 MHz frequency range, a technology made popular by the push-to-talk service of Nextel, formerly an independent network but now part of Sprint.
For the cellular and PCS frequency bands, given the monitoring parameters we selected, we couldn't conclusively identify the technologies underlying the signals we detected.
www.spectrum.ieee.org /mar06/3069/2   (740 words)

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