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101-598: The Krzr series kicked off with the K1, announced on 1 July 2006, release on 10 July 2006. It was GSM only. The K1 used the motosync system to synchronize contacts and the calendar with the touch of a button. It also used the Push-To-View system for sharing of images in real-time. The phone included stylized features such as a glossy glass finish. A GSM / EDGE model was released by AT&T , Rogers Wireless , T-Mobile , SunCom Wireless and Cincinnati Bell Wireless under

202-752: A Proto-Celtic form reconstructed as * kwar-is-io -. Alternatively, Pierre-Yves Lambert proposed to translate Parisii as the 'spear people', by connecting the first element to the Old Irish carr ('spear'), derived from an earlier * kwar-sā . In any case, the city's name is not related to the Paris of Greek mythology . Residents of the city are known in English as Parisians and in French as Parisiens ( [paʁizjɛ̃] ). They are also pejoratively called Parigots ( [paʁiɡo] ). The Parisii ,

303-788: A UNESCO World Heritage Site since 1991. Paris is home to several United Nations organizations including UNESCO, as well as other international organizations such as the OECD , the OECD Development Centre , the International Bureau of Weights and Measures , the International Energy Agency , the International Federation for Human Rights , along with European bodies such as the European Space Agency ,

404-515: A broadband-internet connection. Umbrella cells are used to cover shadowed regions of smaller cells and to fill in gaps in coverage between those cells. Cell horizontal radius varies – depending on antenna height, antenna gain , and propagation conditions – from a couple of hundred meters to several tens of kilometers. The longest distance the GSM specification supports in practical use is 35 kilometres (22 mi). There are also several implementations of

505-546: A memorandum of understanding in Copenhagen to develop and deploy a common cellular telephone system across Europe, and EU rules were passed to make GSM a mandatory standard. The decision to develop a continental standard eventually resulted in a unified, open, standard-based network which was larger than that in the United States. In February 1987 Europe produced the first agreed GSM Technical Specification. Ministers from

606-530: A fair amount of sunshine. Each year there are a few days when the temperature rises above 32 °C (90 °F). Longer periods of more intense heat sometimes occur, such as the heat wave of 2003 when temperatures exceeded 30 °C (86 °F) for weeks, reached 40 °C (104 °F) on some days, and rarely cooled down at night. Spring and autumn have, on average, mild days and cool nights, but are changing and unstable. Surprisingly warm or cool weather occurs frequently in both seasons. In winter, sunshine

707-595: A generic term for the plethora of G mobile phone technologies evolved from it. In 1983, work began to develop a European standard for digital cellular voice telecommunications when the European Conference of Postal and Telecommunications Administrations (CEPT) set up the Groupe Spécial Mobile (GSM) committee and later provided a permanent technical-support group based in Paris . Five years later, in 1987, 15 representatives from 13 European countries signed

808-702: A huge and emotional crowd down the Champs Élysées towards Notre Dame de Paris and made a rousing speech from the Hôtel de Ville . In the 1950s and the 1960s, Paris became one front of the Algerian War for independence; in August 1961, the pro-independence FLN targeted and killed 11 Paris policemen, leading to the imposition of a curfew on Muslims of Algeria (who, at that time, were French citizens). On 17 October 1961, an unauthorised but peaceful protest demonstration of Algerians against

909-426: A mast or a building above average rooftop level. Micro cells are cells whose antenna height is under average rooftop level; they are typically deployed in urban areas. Picocells are small cells whose coverage diameter is a few dozen meters; they are mainly used indoors. Femtocells are cells designed for use in residential or small-business environments and connect to a telecommunications service provider 's network via

1010-456: A problem for any open-source GSM implementation, because it is not possible for GNU or any other free software distributor to guarantee immunity from all lawsuits by the patent holders against the users. Furthermore, new features are being added to the standard all the time which means they have patent protection for a number of years. The original GSM implementations from 1991 may now be entirely free of patent encumbrances, however patent freedom

1111-625: A rare unity and speed guided by four public officials: Armin Silberhorn (Germany), Stephen Temple (UK), Philippe Dupuis (France), and Renzo Failli (Italy). In 1989 the Groupe Spécial Mobile committee was transferred from CEPT to the European Telecommunications Standards Institute (ETSI). The IEEE/RSE awarded to Thomas Haug and Philippe Dupuis the 2018 James Clerk Maxwell medal for their "leadership in

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1212-481: A relationship between two parts of the algorithm. The researchers found that this relationship was very unlikely to have happened if it was not intentional. This may have been done in order to satisfy European controls on export of cryptographic programs. The GSM systems and services are described in a set of standards governed by ETSI , where a full list is maintained. Several open-source software projects exist that provide certain GSM features: Patents remain

1313-478: A stronger one. Since 2000, different efforts have been made in order to crack the A5 encryption algorithms. Both A5/1 and A5/2 algorithms have been broken, and their cryptanalysis has been revealed in the literature. As an example, Karsten Nohl developed a number of rainbow tables (static values which reduce the time needed to carry out an attack) and have found new sources for known plaintext attacks . He said that it

1414-755: A sub-tribe of the Celtic Senones , inhabited the Paris area from around the middle of the 3rd century BC. One of the area's major north–south trade routes crossed the Seine on the Île de la Cité , which gradually became an important trading centre. The Parisii traded with many river towns (some as far away as the Iberian Peninsula) and minted their own coins. The Romans conquered the Paris Basin in 52 BC and began their settlement on Paris's Left Bank . The Roman town

1515-443: A term referring to inexperienced individuals utilizing readily available hardware and software. The vulnerability arises from the accessibility of tools such as a DVB-T TV tuner, posing a threat to both mobile and network users. Despite the term "script kiddies" implying a lack of sophisticated skills, the consequences of their attacks on GSM can be severe, impacting the functionality of cellular networks . Given that GSM continues to be

1616-444: Is 4.615 ms. TDMA noise is interference that can be heard on speakers near a GSM phone using TDMA, audible as a buzzing sound. The transmission power in the handset is limited to a maximum of 2 watts in GSM 850/900 and 1 watt in GSM 1800/1900 . GSM has used a variety of voice codecs to squeeze 3.1 kHz audio into between 7 and 13 kbit/s. Originally, two codecs, named after

1717-517: Is Montmartre at 130 m (427 ft). Excluding the outlying parks of Bois de Boulogne and Bois de Vincennes , Paris covers an oval measuring about 87 km (34 sq mi) in area, enclosed by the 35 km (22 mi) ring road, the Boulevard Périphérique . Paris' last major annexation of outlying territories in 1860 gave it its modern form, and created the 20 clockwise-spiralling arrondissements (municipal boroughs). From

1818-767: Is 450 km (280 mi) southeast of London, 287 km (178 mi) south of Calais , 305 km (190 mi) southwest of Brussels , 774 km (481 mi) north of Marseille , 385 km (239 mi) northeast of Nantes , and 135 km (84 mi) southeast of Rouen . Paris has an oceanic climate within the Köppen climate classification , typical of western Europe. This climate type features cool winters, with frequent rain and overcast skies, and mild to warm summers. Very hot and very cold temperatures and weather extremes are rare in this type of climate. Summer days are usually mild and pleasant, with average temperatures between 15 and 25 °C (59 and 77 °F), and

1919-573: Is a standard developed by the European Telecommunications Standards Institute (ETSI) to describe the protocols for second-generation ( 2G ) digital cellular networks used by mobile devices such as mobile phones and tablets. GSM is also a trade mark owned by the GSM Association . " GSM " may also refer to the voice codec initially used in GSM. It was first implemented in Finland in December 1991. By

2020-426: Is called SIM locking and is implemented by a software feature of the phone. A subscriber may usually contact the provider to remove the lock for a fee, utilize private services to remove the lock, or use software and websites to unlock the handset themselves. It is possible to hack past a phone locked by a network operator. In some countries and regions (e.g. Brazil and Germany ) all phones are sold unlocked due to

2121-719: Is derived from its early inhabitants, the Parisii , a Gallic tribe from the Iron Age and the Roman period . The meaning of the Gaulish ethnonym remains debated. According to Xavier Delamarre , it may derive from the Celtic root pario- ('cauldron'). Alfred Holder interpreted the name as 'the makers' or 'the commanders', by comparing it to the Welsh peryff ('lord, commander'), both possibly descending from

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2222-477: Is needed indoors, as in shopping centers or airports. However, this is not a prerequisite, since indoor coverage is also provided by in-building penetration of radio signals from any nearby cell. GSM networks operate in a number of different carrier frequency ranges (separated into GSM frequency ranges for 2G and UMTS frequency bands for 3G), with most 2G GSM networks operating in the 900 MHz or 1800 MHz bands. Where these bands were already allocated,

2323-443: Is not certain due to the United States' "first to invent" system that was in place until 2012. The "first to invent" system, coupled with "patent term adjustment" can extend the life of a U.S. patent far beyond 20 years from its priority date. It is unclear at this time whether OpenBTS will be able to implement features of that initial specification without limit. As patents subsequently expire, however, those features can be added into

2424-486: Is possible to build "a full GSM interceptor   ... from open-source components" but that they had not done so because of legal concerns. Nohl claimed that he was able to intercept voice and text conversations by impersonating another user to listen to voicemail , make calls, or send text messages using a seven-year-old Motorola cellphone and decryption software available for free online. GSM uses General Packet Radio Service (GPRS) for data transmissions like browsing

2525-507: Is said to be in use on some more modern networks. If used with USIM to prevent connections to fake base stations and downgrade attacks , users will be protected in the medium term, though migration to 128-bit GEA/4 is still recommended. The first public cryptanalysis of GEA/1 and GEA/2 (also written GEA-1 and GEA-2) was done in 2021. It concluded that although using a 64-bit key, the GEA-1 algorithm actually provides only 40 bits of security, due to

2626-440: Is scarce. Days are cool, and nights are cold but generally above freezing, with low temperatures around 3 °C (37 °F). Light night frosts are quite common, but the temperature seldom dips below −5 °C (23 °F). Paris sometimes sees light snow or flurries with or without accumulation. Paris has an average annual precipitation of 641 mm (25.2 in), and experiences light rainfall distributed evenly throughout

2727-400: Is structured into several discrete sections: GSM utilizes a cellular network , meaning that cell phones connect to it by searching for cells in the immediate vicinity. There are five different cell sizes in a GSM network: The coverage area of each cell varies according to the implementation environment. Macro cells can be regarded as cells where the base-station antenna is installed on

2828-616: Is the centre of the Île-de-France region , or Paris Region, with an official estimated population of 12,271,794 inhabitants in January 2023, or about 19% of the population of France. The Paris Region had a nominal GDP of €765 billion (US$ 1.064 trillion when adjusted for PPP ) in 2021, the highest in the European Union. According to the Economist Intelligence Unit Worldwide Cost of Living Survey, in 2022, Paris

2929-452: The 3GPP developed third-generation ( 3G ) UMTS standards, followed by the fourth-generation ( 4G ) LTE Advanced and the fifth-generation 5G standards, which do not form part of the ETSI GSM standard. Beginning in the late 2010s, various carriers worldwide started to shut down their GSM networks . Nevertheless, as a result of the network's widespread use, the acronym "GSM" is still used as

3030-599: The Champs-Élysées extended the city west to Étoile , while the working-class neighbourhood of the Faubourg Saint-Antoine on the eastern side of the city grew increasingly crowded with poor migrant workers from other regions of France. Paris was the centre of an explosion of philosophic and scientific activity, known as the Age of Enlightenment . Diderot and D'Alembert published their Encyclopédie in 1751, before

3131-785: The College of Sorbonne , and a palace for himself, the Palais-Cardinal . After Richelieu's death in 1642, it was renamed the Palais-Royal . Due to the Parisian uprisings during the Fronde civil war, Louis XIV moved his court to a new palace, Versailles , in 1682. Although no longer the capital of France, arts and sciences in the city flourished with the Comédie-Française , the Academy of Painting, and

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3232-542: The European Banking Authority and the European Securities and Markets Authority . The football club Paris Saint-Germain and the rugby union club Stade Français are based in Paris. The 81,000-seat Stade de France , built for the 1998 FIFA World Cup , is located just north of Paris in the neighbouring commune of Saint-Denis . Paris hosts the annual French Open Grand Slam tennis tournament on

3333-531: The European Union and the 30th most densely populated city in the world in 2022. Since the 17th century, Paris has been one of the world's major centres of finance , diplomacy , commerce , culture , fashion , and gastronomy . Because of its leading role in the arts and sciences and its early adaptation of extensive street lighting, it became known as the City of Light in the 19th century. The City of Paris

3434-707: The French Academy of Sciences . To demonstrate that the city was safe from attack, the king had the city walls demolished and replaced with tree-lined boulevards that would become the Grands Boulevards . Other marks of his reign were the Collège des Quatre-Nations , the Place Vendôme , the Place des Victoires , and Les Invalides . Paris grew in population from about 400,000 in 1640 to 650,000 in 1780. A new boulevard named

3535-593: The Grand Paris project, to integrate Paris more closely with the towns in the region around it. After many modifications, the new area, named the Metropolis of Grand Paris , with a population of 6.7 million, was created on 1 January 2016. In 2011, the City of Paris and the national government approved the plans for the Grand Paris Express , totalling 205 km (127 mi) of automated metro lines to connect Paris,

3636-484: The Montgolfier Brothers launched the first manned flight in a hot air balloon on 21 November 1783. Paris was the financial capital of continental Europe, as well the primary European centre for book publishing, fashion and the manufacture of fine furniture and luxury goods. On 22 October 1797, Paris was also the site of the first parachute jump in history, by Garnerin . In the summer of 1789, Paris became

3737-653: The Moscow Metro . Gare du Nord is the 24th-busiest railway station in the world and the busiest outside Japan , with 262   million passengers in 2015. Paris has one of the most sustainable transportation systems and is one of only two cities in the world that received the Sustainable Transport Award twice. Paris is known for its museums and architectural landmarks: the Louvre received 8.9   million visitors in 2023, on track for keeping its position as

3838-517: The Paris Commune held power for two months, before being harshly suppressed by the French army during the " Bloody Week " at the end of May 1871. In the late 19th century, Paris hosted two major international expositions: the 1889 Universal Exposition , which featured the new Eiffel Tower, was held to mark the centennial of the French Revolution; and the 1900 Universal Exposition gave Paris

3939-579: The Pont Alexandre III , the Grand Palais , the Petit Palais and the first Paris Métro line. Paris became the laboratory of Naturalism ( Émile Zola ) and Symbolism ( Charles Baudelaire and Paul Verlaine ), and of Impressionism in art ( Courbet , Manet , Monet , Renoir ). By 1901, the population of Paris had grown to about 2,715,000. At the beginning of the century, artists from around

4040-611: The Pont des Arts . During the Restoration , the bridges and squares of Paris were returned to their pre-Revolution names; the July Revolution in 1830 (commemorated by the July Column on the Place de la Bastille ) brought to power a constitutional monarch, Louis Philippe I . The first railway line to Paris opened in 1837, beginning a new period of massive migration from the provinces to

4141-597: The Siege of Paris (885–886) , for which the then Count of Paris ( comte de Paris ), Odo of France , was elected king of West Francia . From the Capetian dynasty that began with the 987 election of Hugh Capet , Count of Paris and Duke of the Franks ( duc des Francs ), as king of a unified West Francia, Paris gradually became the largest and most prosperous city in France. By the end of

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4242-473: The Île Saint-Louis and the larger Île de la Cité , which form the oldest part of Paris. The river's mouth on the English Channel ( La Manche ) is about 233 mi (375 km) downstream from Paris. Paris is spread widely on both banks of the river. Overall, Paris is relatively flat, and the lowest point is 35 m (115 ft) above sea level . Paris has several prominent hills, the highest of which

4343-512: The 12th century, Paris had become the political, economic, religious, and cultural capital of France. The Palais de la Cité , the royal residence, was located at the western end of the Île de la Cité. In 1163, during the reign of Louis VII , Maurice de Sully , bishop of Paris, undertook the construction of the Notre Dame Cathedral at its eastern extremity. After the marshland between the river Seine and its slower 'dead arm' to its north

4444-499: The 1860 area of 78 km (30 sq mi), the city limits were expanded marginally to 86.9 km (33.6 sq mi) in the 1920s. In 1929, the Bois de Boulogne and Bois de Vincennes forest parks were annexed to the city, bringing its area to about 105 km (41 sq mi). The metropolitan area is 2,300 km (890 sq mi). Measured from the 'point zero' in front of its Notre-Dame cathedral , Paris by road

4545-524: The 3GPP. GSM, for the first time, set a common standard for Europe for wireless networks. It was also adopted by many countries outside Europe. This allowed subscribers to use other GSM networks that have roaming agreements with each other. The common standard reduced research and development costs, since hardware and software could be sold with only minor adaptations for the local market. Telstra in Australia shut down its 2G GSM network on 1 December 2016,

4646-599: The 850 MHz and 1900 MHz bands were used instead (for example in Canada and the United States). In rare cases the 400 and 450 MHz frequency bands are assigned in some countries because they were previously used for first-generation systems. For comparison, most 3G networks in Europe operate in the 2100 MHz frequency band. For more information on worldwide GSM frequency usage, see GSM frequency bands . Regardless of

4747-704: The Frank , the first king of the Merovingian dynasty , made the city his capital from 508. As the Frankish domination of Gaul began, there was a gradual immigration by the Franks to Paris and the Parisian Francien dialects were born. Fortification of the Île de la Cité failed to avert sacking by Vikings in 845 , but Paris's strategic importance—with its bridges preventing ships from passing—was established by successful defence in

4848-601: The French police and gendarmes arrested 12,884 Jews, including 4,115 children, and confined them during five days at the Vel d'Hiv ( Vélodrome d'Hiver ), from which they were transported by train to the extermination camp at Auschwitz . None of the children came back. On 25 August 1944, the city was liberated by the French 2nd Armoured Division and the 4th Infantry Division of the United States Army . General Charles de Gaulle led

4949-411: The Place Royale, now Place des Vosges . In spite of Henry IV's efforts to improve city circulation, the narrowness of Paris's streets was a contributing factor in his assassination near Les Halles marketplace in 1610. During the 17th century, Cardinal Richelieu , chief minister of Louis XIII , was determined to make Paris the most beautiful city in Europe. He built five new bridges, a new chapel for

5050-429: The Revolution, but after 1799 it surged with 160,000 new residents, reaching 660,000 by 1815. Napoleon replaced the elected government of Paris with a prefect that reported directly to him. He began erecting monuments to military glory, including the Arc de Triomphe , and improved the neglected infrastructure of the city with new fountains, the Canal de l'Ourcq , Père Lachaise Cemetery and the city's first metal bridge,

5151-564: The Tuileries Palace. In 1793, as the revolution turned increasingly radical, the king, queen and mayor were beheaded by guillotine in the Reign of Terror , along with more than 16,000 others throughout France. The property of the aristocracy and the church was nationalised , and the city's churches were closed, sold or demolished. A succession of revolutionary factions ruled Paris until 9 November 1799 ( coup d'état du 18 brumaire ), when Napoleon Bonaparte seized power as First Consul. The population of Paris had dropped by 100,000 during

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5252-411: The UK by 1993, called the DCS 1800. Also that year, Telstra became the first network operator to deploy a GSM network outside Europe and the first practical hand-held GSM mobile phone became available. In 1995 fax, data and SMS messaging services were launched commercially, the first 1900 MHz GSM network became operational in the United States and GSM subscribers worldwide exceeded 10 million. In

5353-436: The United States; A5/2 is weaker and used in other countries. Serious weaknesses have been found in both algorithms: it is possible to break A5/2 in real-time with a ciphertext-only attack , and in January 2007, The Hacker's Choice started the A5/1 cracking project with plans to use FPGAs that allow A5/1 to be broken with a rainbow table attack. The system supports multiple algorithms so operators may replace that cipher with

5454-427: The abundance of dual-SIM handsets and operators. GSM was intended to be a secure wireless system. It has considered the user authentication using a pre-shared key and challenge–response , and over-the-air encryption. However, GSM is vulnerable to different types of attack, each of them aimed at a different part of the network. Research findings indicate that GSM faces susceptibility to hacking by script kiddies ,

5555-405: The capital of France, was the most populous city of Europe. By comparison, London in 1300 had 80,000 inhabitants. By the early fourteenth century, so much filth had collected inside urban Europe that French and Italian cities were naming streets after human waste. In medieval Paris, several street names were inspired by merde , the French word for "shit". During the Hundred Years' War , Paris

5656-454: The centre stage of the French Revolution . On 14 July, a mob seized the arsenal at the Invalides , acquiring thousands of guns, with which it stormed the Bastille , a principal symbol of royal authority. The first independent Paris Commune , or city council, met in the Hôtel de Ville and elected a Mayor , the astronomer Jean Sylvain Bailly , on 15 July. Louis XVI and the royal family were brought to Paris and incarcerated in

5757-435: The city. In 1848, Louis-Philippe was overthrown by a popular uprising in the streets of Paris. His successor, Napoleon III , alongside the newly appointed prefect of the Seine, Georges-Eugène Haussmann , launched a huge public works project to build wide new boulevards, a new opera house, a central market, new aqueducts, sewers and parks, including the Bois de Boulogne and Bois de Vincennes . In 1860, Napoleon III annexed

5858-507: The concept of an extended cell, where the cell radius could be double or even more, depending on the antenna system, the type of terrain, and the timing advance . GSM supports indoor coverage – achievable by using an indoor picocell base station, or an indoor repeater with distributed indoor antennas fed through power splitters – to deliver the radio signals from an antenna outdoors to the separate indoor distributed antenna system. Picocells are typically deployed when significant call capacity

5959-402: The curfew led to violent confrontations between the police and demonstrators, in which at least 40 people were killed. The anti-independence Organisation armée secrète (OAS) carried out a series of bombings in Paris throughout 1961 and 1962. In May 1968, protesting students occupied the Sorbonne and put up barricades in the Latin Quarter . Thousands of Parisian blue-collar workers joined

6060-420: The development of the first international mobile communications standard with subsequent evolution into worldwide smartphone data communication". The GSM (2G) has evolved into 3G, 4G and 5G. In parallel France and Germany signed a joint development agreement in 1984 and were joined by Italy and the UK in 1986. In 1986, the European Commission proposed reserving the 900 MHz spectrum band for GSM. It

6161-492: The first HSDPA -capable network also became operational. The first HSUPA network launched in 2007. ( High Speed Packet Access (HSPA) and its uplink and downlink versions are 3G technologies, not part of GSM.) Worldwide GSM subscribers exceeded three billion in 2008. The GSM Association estimated in 2011 that technologies defined in the GSM standard served 80% of the mobile market, encompassing more than 5 billion people across more than 212 countries and territories, making GSM

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6262-453: The first Multimedia Messaging Service (MMS) was introduced and the first GSM network in the 800 MHz frequency band became operational. Enhanced Data rates for GSM Evolution (EDGE) services first became operational in a network in 2003, and the number of worldwide GSM subscribers exceeded 1 billion in 2004. By 2005 GSM networks accounted for more than 75% of the worldwide cellular network market, serving 1.5 billion subscribers. In 2005,

6363-443: The first Bishop of Paris: according to legend, when he refused to renounce his faith before the Roman occupiers, he was beheaded on the hill which became known as Mons Martyrum (Latin "Hill of Martyrs"), later " Montmartre ", from where he walked headless to the north of the city; the place where he fell and was buried became an important religious shrine, the Basilica of Saint-Denis , and many French kings are buried there. Clovis

6464-496: The first mobile network operator to decommission a GSM network. The second mobile provider to shut down its GSM network (on 1 January 2017) was AT&T Mobility from the United States . Optus in Australia completed the shut down of its 2G GSM network on 1 August 2017, part of the Optus GSM network covering Western Australia and the Northern Territory had earlier in the year been shut down in April 2017. Singapore shut down 2G services entirely in April 2017. The network

6565-414: The first socialist mayor. He was re-elected in March 2008. In 2007, in an effort to reduce car traffic, he introduced the Vélib' , a system which rents bicycles. Bertrand Delanoë also transformed a section of the highway along the Left Bank of the Seine into an urban promenade and park, the Promenade des Berges de la Seine , which he inaugurated in June 2013. In 2007, President Nicolas Sarkozy launched

6666-475: The flip cover, a 1.3 megapixel camera, supports a microSD memory card up to 1 GB, but does not have stereo Bluetooth headphone (A2DP) capabilities, whereas, the K1 doesn't have the touch music controls, but has a better, 2.0 megapixel camera, supports a MicroSD card up to a higher 2 GB, and is A2DP capable. The next Krzr phone was the K3, launched in February 2007. This phone is 3G -capable. GSM The Global System for Mobile Communications ( GSM )

6767-417: The four big EU countries cemented their political support for GSM with the Bonn Declaration on Global Information Networks in May and the GSM MoU was tabled for signature in September. The MoU drew in mobile operators from across Europe to pledge to invest in new GSM networks to an ambitious common date. In this short 38-week period the whole of Europe (countries and industries) had been brought behind GSM in

6868-416: The frequency selected by an operator, it is divided into timeslots for individual phones. This allows eight full-rate or sixteen half-rate speech channels per radio frequency . These eight radio timeslots (or burst periods) are grouped into a TDMA frame. Half-rate channels use alternate frames in the same timeslot. The channel data rate for all 8 channels is 270.833 kbit/s, and the frame duration

6969-453: The front line at the First Battle of the Marne . The city was also bombed by Zeppelins and shelled by German long-range guns . In the years after the war, known as Les Années Folles , Paris continued to be a mecca for writers, musicians and artists from around the world, including Ernest Hemingway , Igor Stravinsky , James Joyce , Josephine Baker , Eva Kotchever , Henry Miller , Anaïs Nin , Sidney Bechet and Salvador Dalí . In

7070-413: The innermost three departments around Paris, airports and high-speed rail (TGV) stations, at an estimated cost of €35 billion. The system is scheduled to be completed by 2030. In January 2015, Al-Qaeda in the Arabian Peninsula claimed attacks across the Paris region. 1.5 million people marched in Paris in a show of solidarity against terrorism and in support of freedom of speech. In November of

7171-500: The key features of GSM is the Subscriber Identity Module , commonly known as a SIM card . The SIM is a detachable smart card containing a user's subscription information and phone book. This allows users to retain their information after switching handsets. Alternatively, users can change networks or network identities without switching handsets - simply by changing the SIM. Sometimes mobile network operators restrict handsets that they sell for exclusive use in their own network. This

7272-564: The late 12th century, Philip Augustus extended the Louvre fortress to defend the city against river invasions from the west, gave the city its first walls between 1190 and 1215, rebuilt its bridges to either side of its central island, and paved its main thoroughfares. In 1190, he transformed Paris's former cathedral school into a student-teacher corporation that would become the University of Paris and would draw students from all of Europe. With 200,000 inhabitants in 1328, Paris, then already

7373-414: The main source of cellular technology in numerous countries, its susceptibility to potential threats from malicious attacks is one that needs to be addressed. The development of UMTS introduced an optional Universal Subscriber Identity Module (USIM), that uses a longer authentication key to give greater security, as well as mutually authenticating the network and the user, whereas GSM only authenticates

7474-609: The mid-2010s, it became a global standard for mobile communications achieving over 90% market share, and operating in over 193 countries and territories. 2G networks developed as a replacement for first generation ( 1G ) analog cellular networks. The GSM standard originally described a digital, circuit-switched network optimized for full duplex voice telephony . This expanded over time to include data communications, first by circuit-switched transport , then by packet data transport via General Packet Radio Service (GPRS), and Enhanced Data Rates for GSM Evolution (EDGE). Subsequently,

7575-682: The modern city of Paris was first mentioned in the mid-1st century BC by Julius Caesar as Luteciam Parisiorum (' Lutetia of the Parisii ') and is later attested as Parision in the 5th century AD, then as Paris in 1265. During the Roman period, it was commonly known as Lutetia or Lutecia in Latin, and as Leukotekía in Greek, which is interpreted as either stemming from the Celtic root *lukot- ('mouse'), or from * luto- ('marsh, swamp'). The name Paris

7676-580: The most ubiquitous of the many standards for cellular networks. GSM is a second-generation (2G) standard employing time-division multiple-access (TDMA) spectrum-sharing, issued by the European Telecommunications Standards Institute (ETSI). The GSM standard does not include the 3G Universal Mobile Telecommunications System (UMTS), code-division multiple access (CDMA) technology, nor the 4G LTE orthogonal frequency-division multiple access (OFDMA) technology standards issued by

7777-421: The most-visited art museum in the world. The Musée d'Orsay , Musée Marmottan Monet and Musée de l'Orangerie are noted for their collections of French Impressionist art. The Pompidou Centre , Musée National d'Art Moderne , Musée Rodin and Musée Picasso are noted for their collections of modern and contemporary art . The historical district along the Seine in the city centre has been classified as

7878-582: The name Motokrzr K1 , and a CDMA 1x / EV-DO model was released by Pocket Communications , Verizon Wireless , Sprint , US Cellular , Alltel , Virgin Mobile Canada and Boost Mobile under the name Motokrzr K1m . The exact features and technical specifications differed significantly between models. The K1m is the CDMA version of the K1. The main difference between the two is that the K1m has touch music controls on

7979-705: The new site of the Bibliothèque nationale de France (1996), the Arche de la Défense (1985–1989) in La Défense , as well as the Louvre Pyramid with its underground courtyard (1983–1989); Jacques Chirac (2006), the Musée du quai Branly . In the early 21st century, the population of Paris began to increase slowly again, as more young people moved into the city. It reached 2.25 million in 2011. In March 2001, Bertrand Delanoë became

8080-408: The open-source version. As of 2011 , there have been no lawsuits against users of OpenBTS over GSM use. Paris Paris ( French pronunciation: [paʁi] ) is the capital and largest city of France . With an estimated population of 2,102,650 residents in January 2023 in an area of more than 105 km (41 sq mi), Paris is the fourth-largest city in

8181-536: The red clay of Roland Garros . Paris hosted the 1900 , the 1924 , and the 2024 Summer Olympics . The 1938 and 1998 FIFA World Cups , the 2019 FIFA Women's World Cup , the 2007 Rugby World Cup , as well as the 1960 , 1984 and 2016 UEFA European Championships were held in Paris. Every July, the Tour de France bicycle race finishes on the Avenue des Champs-Élysées in Paris. The ancient oppidum that corresponds to

8282-559: The same year, terrorist attacks , claimed by ISIL, killed 130 people and injured more than 350. On 22 April 2016, the Paris Agreement was signed by 196 nations of the United Nations Framework Convention on Climate Change in an aim to limit the effects of climate change below 2 °C. Paris is located in northern central France, in a north-bending arc of the river Seine , whose crest includes two islands,

8383-459: The same year, the GSM Association formed. Pre-paid GSM SIM cards were launched in 1996 and worldwide GSM subscribers passed 100 million in 1998. In 2000 the first commercial General Packet Radio Service (GPRS) services were launched and the first GPRS-compatible handsets became available for sale. In 2001, the first UMTS (W-CDMA) network was launched, a 3G technology that is not part of GSM. Worldwide GSM subscribers exceeded 500 million. In 2002,

8484-458: The signal. GSM was further enhanced in 1997 with the enhanced full rate (EFR) codec, a 12.2 kbit/s 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, or less robust but still relatively high quality when used in good radio conditions on half-rate channel. One of

8585-629: The students, and the movement grew into a two-week general strike. Supporters of the government won the June elections by a large majority. The May 1968 events in France resulted in the break-up of the University of Paris into 13 independent campuses. In 1975, the National Assembly changed the status of Paris to that of other French cities and, on 25 March 1977, Jacques Chirac became the first elected mayor of Paris since 1793. The Tour Maine-Montparnasse ,

8686-585: The surrounding towns and created eight new arrondissements, expanding Paris to its current limits. During the Franco-Prussian War (1870–1871), Paris was besieged by the Prussian Army . Following several months of blockade, hunger, and then bombardment by the Prussians, the city was forced to surrender on 28 January 1871. After seizing power in Paris on 28 March, a revolutionary government known as

8787-460: The tallest building in the city at 57 storeys and 210 m (689 ft) high, was built between 1969 and 1973. It was highly controversial, and it remains the only building in the centre of the city over 32 storeys high. The population of Paris dropped from 2,850,000 in 1954 to 2,152,000 in 1990, as middle-class families moved to the suburbs. A suburban railway network, the RER (Réseau Express Régional),

8888-529: The throne Henry IV , after converting to Catholicism to gain entry to the capital, entered the city in 1594 to claim the crown of France. This king made several improvements to the capital during his reign: he completed the construction of Paris's first uncovered, sidewalk-lined bridge, the Pont Neuf , built a Louvre extension connecting it to the Tuileries Palace , and created the first Paris residential square,

8989-400: The types of data channel they were allocated, were used, called Half Rate (6.5 kbit/s) and Full Rate (13 kbit/s). These used a system based on linear predictive coding (LPC). In addition to being efficient with bitrates , these codecs also made it easier to identify more important parts of the audio, allowing the air interface layer to prioritize and better protect these parts of

9090-415: The user to the network (and not vice versa). The security model therefore offers confidentiality and authentication, but limited authorization capabilities, and no non-repudiation . GSM uses several cryptographic algorithms for security. The A5/1 , A5/2 , and A5/3 stream ciphers are used for ensuring over-the-air voice privacy. A5/1 was developed first and is a stronger algorithm used within Europe and

9191-535: The web. The most commonly deployed GPRS ciphers were publicly broken in 2011. The researchers revealed flaws in the commonly used GEA/1 and GEA/2 (standing for GPRS Encryption Algorithms 1 and 2) ciphers and published the open-source "gprsdecode" software for sniffing GPRS networks. They also noted that some carriers do not encrypt the data (i.e., using GEA/0) in order to detect the use of traffic or protocols they do not like (e.g., Skype ), leaving customers unprotected. GEA/3 seems to remain relatively hard to break and

9292-488: The world including Pablo Picasso , Modigliani , and Henri Matisse made Paris their home. It was the birthplace of Fauvism , Cubism and abstract art , and authors such as Marcel Proust were exploring new approaches to literature. During the First World War , Paris sometimes found itself on the front line; 600 to 1,000 Paris taxis played a small but highly important symbolic role in transporting 6,000 soldiers to

9393-401: The year. Paris is known for intermittent, abrupt, heavy showers. The highest recorded temperature was 42.6 °C (108.7 °F), on 25 July 2019. The lowest was −23.9 °C (−11.0 °F), on 10 December 1879. For almost all of its long history, except for a few brief periods, Paris was governed directly by representatives of the king, emperor, or president of France. In 1974, Paris

9494-472: The years after the peace conference , the city was also home to growing numbers of students and activists from French colonies and other Asian and African countries, who later became leaders of their countries, such as Ho Chi Minh , Zhou Enlai and Léopold Sédar Senghor . On 14 June 1940, the German army marched into Paris, which had been declared an " open city ". On 16–17 July 1942, following German orders,

9595-463: Was actually made by me. I called Marjo Jousinen, in Salo.", Lonka informed. The following year saw the sending of the first short messaging service (SMS or "text message") message, and Vodafone UK and Telecom Finland signed the first international roaming agreement. Work began in 1991 to expand the GSM standard to the 1800 MHz frequency band and the first 1800 MHz network became operational in

9696-703: Was built to complement the Métro; the Périphérique expressway encircling the city, was completed in 1973. Most of the postwar presidents of the Fifth Republic wanted to leave their own monuments in Paris; President Georges Pompidou started the Centre Georges Pompidou (1977), Valéry Giscard d'Estaing began the Musée d'Orsay (1986); President François Mitterrand had the Opéra Bastille built (1985–1989),

9797-519: Was filled in from around the 10th century, Paris's cultural centre began to move to the Right Bank. In 1137, a new city marketplace (today's Les Halles ) replaced the two smaller ones on the Île de la Cité and Place de Grève (Place de l'Hôtel de Ville) . The latter location housed the headquarters of Paris's river trade corporation, an organisation that later became, unofficially (although formally in later years), Paris's first municipal government. In

9898-473: Was long believed that the former Finnish prime minister Harri Holkeri made the world's first GSM call on 1 July 1991, calling Kaarina Suonio (deputy mayor of the city of Tampere ) using a network built by Nokia and Siemens and operated by Radiolinja . In 2021 a former Nokia engineer Pekka Lonka revealed to Helsingin Sanomat making a test call just a couple of hours earlier. "World's first GSM call

9999-611: Was occupied by England-friendly Burgundian forces from 1418, before being occupied outright by the English when Henry V of England entered the French capital in 1420; in spite of a 1429 effort by Joan of Arc to liberate the city, it would remain under English occupation until 1436. In the late 16th-century French Wars of Religion , Paris was a stronghold of the Catholic League , the organisers of 24 August 1572 St. Bartholomew's Day massacre in which thousands of French Protestants were killed. The conflicts ended when pretender to

10100-542: Was originally called Lutetia (more fully, Lutetia Parisiorum , "Lutetia of the Parisii", modern French Lutèce ). It became a prosperous city with a forum, baths, temples, theatres, and an amphitheatre . By the end of the Western Roman Empire , the town was known as Parisius , a Latin name that would later become Paris in French. Christianity was introduced in the middle of the 3rd century AD by Saint Denis ,

10201-466: Was the city with the ninth-highest cost of living in the world. Paris is a major railway, highway, and air-transport hub served by two international airports: Charles de Gaulle Airport , the third-busiest airport in Europe , and Orly Airport . Opened in 1900, the city's subway system, the Paris Métro , serves 5.23   million passengers daily. It is the second-busiest metro system in Europe after

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