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| | Nordic Mobile Telephone - Wikipedia, the free encyclopedia |
 | | NMT is based on analog technology (first generation or 1G) and two variants exist: NMT-450 and NMT-900. | | | This is not particularly effective as it isn't that hard to obtain a scanner that doesn't have these restrictions; it is also possible to re-program a scanner so that the "deleted" bands can be accessed. | | | NMT-900 was introduced in 1986 because it carries more channels than the previous NMT-450 network. |
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http://en.wikipedia.org/wiki/Nordic_Mobile_Telephone
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| | Mobile Computing : Past , Present and Future |
| | Mobile Computing : A technology that allows transmission of data, via a computer, without having to be connected to a fixed physical link. | | | With the emphasis increasingly on compact, small mobile computers, it may also be possible to have all the practicality of a mobile computer in the size of a hand held organizer or even smaller. | | | With mobile computers they can be more productive. |
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http://www-dse.doc.ic.ac.uk/~nd/surprise_96/journal/vol4/vk5/report.html
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| | [No title] |
| | This is designed to be a preemptive move to thwart the ambitions of Microsoft to establish the interface for handheld computers, by building a powerful technology for this kind of rich data communication through mobile phones. | | | In a July 1993 interview, Nokia Mobile Phones President Pekka Ala-Pietila shared his view of how the strategy of a global product would work: “Even though these phones are available in different electronic configurations. | | | This kind of communication requires more capacity for carrying data, however, and for that the industry’s giants also appear to be cooperating. |
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http://www.yale.edu/nordic/reading_room/nokia.doc
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| | Lucent Technologies announces 3G collaboration with Radio Design AB of Sweden |
| | This combined knowledge is critical in understanding the digital migration issues in transitioning NMT networks from analogue to CDMA 450. | | | Two years ago, the operators and vendors of NMT networks formed the Digital Interest Group (DiG) to recommend a digital migration path to the NMT operators. | | | At the conclusion of this investigation the operators voted in favour of CDMA 450 as one of the two preferred digital upgrade technologies. |
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http://www.lucent.com/press/0400/000412.nsb.html
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| | Development of Mobile and Wireless Services |
| | The error rates are often much higher, and the transmission from different computers can interfere with one another. | | | The last ten years have seen the explosion of wireless communications and computer. | | | Mobile IP, a new Internet protocol is a challenging issue that needs to be addressed effectively since this allows for mobility of users. |
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http://www.tml.hut.fi/Studies/Tik-110.300/1999/Wireless/sosial_3.html
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| | World Telecommunication Development Report 1999: Mobile Cellular - Summary - Page 3 |
| | A Wireless Local Loop (WLL) system is also in use for fixed service. | | | World Telecommunication Development Report 1999: Mobile Cellular - Summary - Page 3 | | | Finns have also pioneered the use of mobile technology for other applications, such as short message text and data services, chat rooms and even for connecting vending machines. |
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http://www.itu.int/ITU-D/ict/publications/wtdr_99/page3.html
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| | Sociology of mobile telephones: The nordic model |
| | In January 1994 all mobile phone systems had about 480,000 users, the number having grown about 30% in 1991 and 37 % in 1993 and more than trebled from the end of 1988. | | | NMT 900 is still by far the most popular system (60 % of users), and the expected rapid growth of GSM has not yet materialized (see Svenska Dagbladet 7.3.1994). | | | The walkman and the portable PC are two other examples of audiovisual activities while on the move. |
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http://www.valt.helsinki.fi/staff/jproos/mobiletel.htm
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| | NMT - Nordic Mobile Telephone |
| | More information about the definition of NMT may appear below: | | | NMT (NMT-450 and NMT-900) is an analogue public mobile communications system, which is based on a common agreement between the Nordic countries on preparing and drawing up technical specifications. | | | The latest system uses 30 KHz channels, and signaling is done using 1200 Hz and 1800 Hz tones in much the same way as a modem. |
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http://www.auditmypc.com/acronym/NMT.asp
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| | IEC: Global System for Mobile Communication (GSM) |
| | One challenge facing analog systems was the inability to handle the growing capacity needs in a cost-efficient manner. | | | In the early 1980s, most mobile telephone systems were analog rather than digital, like today's newer systems. | | | The advantages of digital systems over analog systems include ease of signaling, lower levels of interference, integration of transmission and switching, and increased ability to meet capacity demands. |
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http://www.iec.org/online/tutorials/gsm/topic01.html?Back.x=22&Back.y=26
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| | Amazon.com: 3G Wireless Demystified: Books: Lawrence Harte,Richard Levine,Roman Kikta |
| | Apart from the various standards relevant to 3G, cursory introductions to the various components of the mobile handset and network are also given, which should be useful to those who need a crash course in how cellular networks work. | | | Mobile Cellular Telecommunications: Analog and Digital Systems by William C. Lee on page 62, and page 400 | | | Telecom experts provide a big picture overview of 3rd Generation universal mobile telecommunications systems. |
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http://www.amazon.com/exec/obidos/tg/detail/-/0071363017?v=glance
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| | Cellular Telephone Service |
| | The switches also cannot support a common voice path for many simultaneous mobiles. | | | Trunked 800 systems have their shortfalls, to be sure, but the network concept they were designed to operate under is one that meshes well with a dispatch-type of operation. | | | The paging channel is a digital stream of system information and telephone call "pages". |
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http://www.decodesystems.com/mt/96nov
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| | dktele |
| | Such comparisons can be seen in table 7. | | | According to the Danish Ministry of Research and Information Technology, there are 59 telephone lines for each 100 inhabitants (or 590 per 1000), as shown in table 1, and 19 mobile telephones per 100 inhabitants (190 per 1000). | | | From 1987 to 1994, the percentage of digital numbers increased from 11% to 53%, and this growth continues. |
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http://www.american.edu/initeb/dc4053a/dktele.html
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| | Introduction to Mobile Telephone Systems |
| | This book explains the different types of mobile telephone technologies and systems from 1st generation analog to 3rd generation digital broadband. | | | Mobile telephone technologies, systems, and services have dramatically changed over the past 2 years. | | | The types of services that mobile telephone systems can offer vary depending on the technologies, devices, and the services selected by customers. |
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http://www.althosbooks.com/intomotesy1g.html
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| | Tektronix: Primer > UMTS Protocols and Protocol Testing : Introduction |
| | Semiconductor technology and microprocessors made smaller, lighter weight and more sophisticated mobile systems a practical reality for many more users. | | | Further advances in semiconductor technology and microwave devices brought digital transmission to mobile communications. | | | The introduction of cellular systems in the late 1970s/early 1980s represented a quantum leap in mobile communication (especially in capacity and mobility). |
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http://www.tek.com/Measurement/App_Notes/2F_14251/eng
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| | Privateline.com Mobile Telephone History: Page 9 |
| | Little desire existed to design an all digital system when the present one was working well and proving popular. | | | A 'slim' version appeared in a D-AMPS 1900 model as well as a PDC version. | | | NB: Some systems may still be in use, others are defunct. |
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http://www.privateline.com/PCS/history9.htm
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| | SUMMARY OF ERICSSON PRESS RELEASES - Quarter 2, 1991 |
| | The decline in income is mainly attributable to continuing increases in technological development costs in the public telecommunications and mobile telephony sectors, where in the U.S., Europe and Japan a simultaneous shift is currently taking place from analog to digital systems. | | | The successful accomplishment of radar functions in flight test is an important milestone in the program and a vital base for decisions on the continuation of the development and production program. | | | The worldwide downturn in business conditions is also currently affecting the rate at which telecommunications systems can be installed, which explains the relatively low rise in net sales. |
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http://www.ericsson.com/press/q291.html
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| | HardwareGeeks.com A Community For the Sophisticated Geek or Geekette - Some Early Mobiles Reportedly Pose Brain Tumor ... |
| | Analog Nordic Mobile Telephone phones have been in operation for 20 years, making it possible to study the longer-term impact of microwave exposure to their users, but researcher Kjell Hansson Mild said it was too early to draw conclusions on the currently widely used digital Global System for Mobile Communications phones. | | | The Nordic Mobile Telephone network was initially developed to serve the Nordic countries, starting operations in the early 1980s, but then became popular in Russia and the Baltic countries. | | | It is still used in more than 40 countries, but has been overtaken in several countries by the Global System for Mobile Communications, which is due to be gradually replaced by rapid third-generation mobile networks. |
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http://www.hardwaregeeks.com/board/showthread.php?t=386
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| | Notes and Definitions - Telephone system |
| | NMT - Nordic Mobile Telephone; an analog cellular telephone system that was developed jointly by the national telecommunications authorities of the Nordic countries (Denmark, Finland, Iceland, Norway, and Sweden). | | | microwave radio relay - transmission of long distance telephone calls and television programs by highly directional radio microwaves that are received and sent on from one booster station to another on an optical path. | | | Central American Microwave System - a trunk microwave radio relay system that links the countries of Central America and Mexico with each other. |
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http://www.exxun.com/eznd/nd_telephone_sys.html
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| | Mobile Phones: No Health Effects Found |
| | But in Sweden, mobile phone users who were on the device more than 60 minutes per day were no more likely to report fatigue than those who used analogue phones for under 15 minutes per day. | | | Kjell Hansson Mild of Sweden's National Institute for Working Life in Umea, Sweden, and colleagues surveyed nearly 17,000 users of the analogue Nordic Mobile Telephone (NMT) and the digital Global System for Mobiles (GSM) in both Sweden and Norway. | | | For example, Norwegians who use the GSM system more than 60 minutes per day were four times more likely to report fatigue compared with those who use the telephone less than 15 minutes per day. |
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http://www.personalmd.com/news/a1998051811.shtml
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| | 450MHz mobile market set to explode |
| | ONE OF THE original analogue mobile phone networks - NMT (Nordic Mobile Telephone) - is effectively dead. | | | And guess who's dead keen to see 450 MHz utilised for CDMA networks? | | | The German regulator, RegTP, announced the assignment of frequencies for wideband PAMR (Public Access Mobile Radio) in the frequency bands 451.00 - 455.74 MHz and 461.00 - 465.74 MHz just before Xmas. |
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http://www.theinquirer.net/?article=20934
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