|
Nordic Mobile Telephone
NMT (''Nordic Mobile Telephony'') is an automatic cellular phone system specified by Nordic telecommunications administrations ( PTTs) and opened for service on 1 October 1981. NMT is based on analogue technology (first generation or 1G) and two variants exist: NMT-450 and NMT-900. The numbers indicate the frequency bands used. NMT-900 was introduced in 1986 and carries more channels than the older NMT-450 network. The NMT specifications were free and open, allowing many companies to produce NMT hardware and pushing prices down. The success of NMT was important to Nokia Nokia Corporation (natively Nokia Oyj, referred to as Nokia) is a Finnish multinational telecommunications, information technology, and consumer electronics corporation, established in 1865. Nokia's main headquarters are in Espoo, Finlan ... (then Mobira) and Ericsson. First Danish implementers were Storno (then owned by General Electric, later taken over by Motorola) and AP (later taken over by Phi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nokia 150 And Nokia 1100
Nokia Corporation (natively Nokia Oyj, referred to as Nokia) is a Finnish multinational telecommunications, information technology, and consumer electronics corporation, established in 1865. Nokia's main headquarters are in Espoo, Finland, in the greater Helsinki metropolitan area, but the company's actual roots are in the Tampere region of Pirkanmaa.HS: Nokian juuret ovat Tammerkosken rannalla (in Finnish) In 2020, Nokia employed approximately 92,000 people across over 100 countries, did business in more than 130 countries, and reported annual revenues of around €23 billion. Nokia is a listed on the [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baltic Countries
The Baltic states, et, Balti riigid or the Baltic countries is a geopolitical term, which currently is used to group three countries: Estonia, Latvia, and Lithuania. All three countries are members of NATO, the European Union, the Eurozone, and the OECD. The three sovereign states on the eastern coast of the Baltic Sea are sometimes referred to as the "Baltic nations", less often and in historical circumstances also as the "Baltic republics", the "Baltic lands", or simply the Baltics. All three Baltic countries are classified as high-income economies by the World Bank and maintain a very high Human Development Index. The three governments engage in intergovernmental and parliamentary cooperation. There is also frequent cooperation in foreign and security policy, defence, energy, and transportation. The term "Baltic states" ("countries", "nations", or similar) cannot be used unambiguously in the context of cultural areas, national identity, or language. While the majority ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Encryption
In cryptography, encryption is the process of encoding information. This process converts the original representation of the information, known as plaintext, into an alternative form known as ciphertext. Ideally, only authorized parties can decipher a ciphertext back to plaintext and access the original information. Encryption does not itself prevent interference but denies the intelligible content to a would-be interceptor. For technical reasons, an encryption scheme usually uses a pseudo-random encryption key generated by an algorithm. It is possible to decrypt the message without possessing the key but, for a well-designed encryption scheme, considerable computational resources and skills are required. An authorized recipient can easily decrypt the message with the key provided by the originator to recipients but not to unauthorized users. Historically, various forms of encryption have been used to aid in cryptography. Early encryption techniques were often used in milit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frequency Shift Keying
Frequency-shift keying (FSK) is a frequency modulation scheme in which digital information is transmitted through discrete frequency changes of a carrier signal. The technology is used for communication systems such as telemetry, weather balloon radiosondes, caller ID, garage door openers, and low frequency radio transmission in the VLF and ELF bands. The simplest FSK is binary FSK (BFSK). BFSK uses a pair of discrete frequencies to transmit binary (0s and 1s) information. With this scheme, the 1 is called the mark frequency and the 0 is called the space frequency. Modulating and demodulating Reference implementations of FSK modems exist and are documented in detail. The demodulation of a binary FSK signal can be done using the Goertzel algorithm very efficiently, even on low-power microcontrollers. Variations Multiple frequency-shift keying Continuous-phase frequency-shift keying In principle FSK can be implemented by using completely independent free-running osci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roaming
Roaming is a wireless telecommunication term typically used with mobile devices, such as mobile phones. It refers to a mobile phone being used outside the range of its native network and connecting to another available cell network. Technical definition In more technical terms, roaming refers to ''the ability for a cellular customer to automatically make and receive voice calls, send and receive data, or access other services, including home data services, when travelling outside the geographical coverage area of the home network, by means of using a visited network''. For example: should a subscriber travel beyond their cell phone company's transmitter range, their cell phone would automatically hop onto another phone company's service, if available. The process is supported by the Telecommunication processes of mobility management, authentication, authorization and accounting billing procedures (known as AAA or 'triple A'). Roaming in general Roaming is divided i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Handover
In cellular telecommunications, handover, or handoff, is the process of transferring an ongoing call or data session from one channel connected to the core network to another channel. In satellite communications it is the process of transferring satellite control responsibility from one earth station to another without loss or interruption of service. Terminology American English uses the term ''handoff'', and this is most commonly used within some American organizations such as 3GPP2 and in American originated technologies such as CDMA2000. In British English the term ''handover'' is more common, and is used within international and European organisations such as ITU-T, IETF, ETSI and 3GPP, and standardised within European originated standards such as GSM and UMTS. The term handover is more common in academic research publications and literature, while handoff is slightly more common within the IEEE and ANSI organisations. Purpose In telecommunications there may be dif ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perm Krai
Perm Krai (russian: Пе́рмский край, r=Permsky kray, p=ˈpʲɛrmskʲɪj ˈkraj, ''Permsky krai'', , ''Perem lador'') is a federal subject of Russia (a krai) that came into existence on December 1, 2005 as a result of the 2004 referendum on the merger of Perm Oblast and Komi-Permyak Autonomous Okrug. The city of Perm is the administrative center. The population of the krai was 2,635,276 according to the ( 2010 Census). Komi-Permyak Okrug retained its autonomous status within Perm Krai during the transitional period of 2006–2008. It also retained a budget separate from that of the krai, keeping all federal transfers. Starting in 2009, Komi-Permyak Okrug's budget became subject to the budgeting law of Perm Krai. The transitional period was implemented in part because Komi-Permyak Okrug relies heavily on federal subsidies, and an abrupt cut would have been detrimental to its economy. Geography Perm Krai is located in the east of the East European Plain and the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arkhangelsk Oblast
Arkhangelsk Oblast (russian: Арха́нгельская о́бласть, ''Arkhangelskaya oblast'') is a federal subject of Russia (an oblast). It includes the Arctic archipelagos of Franz Josef Land and Novaya Zemlya, as well as the Solovetsky Islands in the White Sea. Arkhangelsk Oblast also has administrative jurisdiction over the Nenets Autonomous Okrug (NAO). Including the NAO, Arkhangelsk Oblast has an area of 587,400 km2. Its population (including the NAO) was 1,227,626 as of the 2010 Census. The city of Arkhangelsk, with a population of 301,199 as of the 2021 Census, is the administrative center of the oblast.Charter, Article 5 The second largest city is the nearby Severodvinsk, home to Sevmash, a major shipyard for the Russian Navy. Among the oldest populated places of the oblast are Kholmogory, Kargopol, and Solvychegodsk; there are a number of Russian Orthodox monasteries, including the Antoniev Siysky Monastery and the World Heritage S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tele2 Russia
Tele2 Russia is a Russian telecommunications company originally founded by Swedish Tele2. It has been operating since 2003. Since 2020, Tele2 Russia is a wholly owned subsidiary of Rostelecom. At year-end 2019, Tele2 Russia provides wireless services to more than 44.6 million subscribers. As of beginning of April 2019, Tele2 is present in 67 subjects of Russia. Tele2 Russia functions as a group of companies, and the parent structure of the holding is named Limited Liability Company "T2 RTK Holding" with the headquarters in Moscow. Now the Russian company Tele2 Russia and the Swedish Tele2 AB are interconnected through the common brand and the corporate values of Tele2Way, which both companies propagate. Tele2Way values were established by the founder of the company Jan Stenbeck, and they reveal the essence of the company operation. History The history of the company began in the 1990s when the American-Swedish Millicom International Cellular established mobile network operato ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nordisk Mobiltelefon (Sweden)
Net 1 is a Nordic telecommunications company operating 4G LTE mobile broadband networks in Norway, Sweden and Denmark since 2015, in Indonesia since 2017, and in the Philippines since 2019. Since February 2019, the Swedish operations of Net 1 are owned by Teracom, while the Danish operations of Net 1 are owned by Cibicom A/S since 2020. The Norwegian operations are owned by Ice group. History Nordisk Mobiltelefon was founded in 2003, and in 2005 received a ten-year licence from the Swedish Post and Telecom Authority (PTS) to operate a digital CDMA2000 450 MHz mobile telephone network in Sweden, using the analogue NMT-450 band inherited from Telia. The NMT-450 and CDMA2000 networks greatly exceeded the range of GSM and its geographical coverage, and is extensively used by the logging industry and users in remote rural areas. Nordisk Mobiltelefon was co-founded by Arnfinn Röste. During 2008, the company introduced Ice.net which is the brand name that was used commercially u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sweden
Sweden, ; fi, Ruotsi; fit, Ruotti; se, Ruoŧŧa; smj, Svierik; sje, Sverji; sju, Sverje; sma, Sveerje or ; yi, שוועדן, Shvedn; rmu, Svedikko; rmf, Sveittiko. formally the Kingdom of Sweden, is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. It borders Norway to the west and north, and Finland to the east. At , Sweden is the largest Nordic country and the List of European countries by area, fifth-largest country in Europe. The Capital city, capital and largest city is Stockholm. Sweden has a population of 10.5 million, and a low population density of ; around 87% of Swedes reside in urban areas in the central and southern half of the country. Sweden’s urban areas together cover 1.5% of its land area. Because the country is so long, ranging from 55th parallel north, 55°N to 69th parallel north, 69°N, the climate of Sweden is diverse. Sweden has been inhabited since Prehistoric Sweden, prehistoric times, . T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
