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97-503: 51°30′34″N 0°9′2″W  /  51.50944°N 0.15056°W  / 51.50944; -0.15056 Mount Street Gardens is a public garden off Mount Street in the west of the Mayfair area of London , England. The gardens were created in 1889 out of a former burial ground of St George's, Hanover Square , and named after the Mount Field, an area including a fortification dating from

194-540: A CCITT standard. Similar schemes were used in the Americas and in some European countries including Spain. Digit strings between switches were often abbreviated to further improve utilization. For example, one switch might send only the last four or five digits of a telephone number . In one case, seven digit numbers were preceded by a digit 1 or 2 to differentiate between two area codes or office codes, (a two-digit-per-call savings). This improved revenue per trunk and reduced

291-446: A panel switch and a manual switchboard. Probably the most common form of communicating dialed digits between electromechanical switches was sending dial pulses , equivalent to a rotary dial 's pulsing, but sent over trunk circuits between switches. In Bell System trunks, it was common to use 20 pulse-per-second between crossbar switches and crossbar tandems. This was twice the rate of Western Electric/Bell System telephone dials. Using

388-456: A central office (C.O.) is a common carrier switching center Class 5 telephone switch in which trunks and local loops are terminated and switched. In the UK, a telephone exchange means an exchange building, and is also the name for a telephone switch. With manual service , the customer lifts the receiver off-hook and asks the operator to connect the call to a requested number. Provided that

485-484: A circuit connecting a dialed call through an electromechanical switch had DC continuity within the local exchange area via metallic conductors. The design and maintenance procedures of all systems involved methods to avoid that subscribers experienced undue changes in the quality of the service or that they noticed failures. A variety of tools referred to as make-busy s were plugged into electromechanical switch elements upon failure and during repairs. A make-busy identified

582-549: A complement to home or architecture, but conceived as independent spaces, arranged to grow and display flowers and ornamental plants. Gardeners demonstrated their artistry in knot gardens , with complex arrangements most commonly included interwoven box hedges , and less commonly fragrant herbs like rosemary . Sanded paths run between the hedgings of open knots whereas closed knots were filled with single colored flowers. The knot and parterre gardens were always placed on level ground, and elevated areas reserved for terraces from which

679-412: A digit receiver (part of an element called an Originating Register ) would be connected to a call just long enough to collect the subscriber's dialed digits. Crossbar architecture was more flexible than step offices. Later crossbar systems had punch-card-based trouble reporting systems. By the 1970s, automatic number identification had been retrofitted to nearly all step-by-step and crossbar switches in

776-517: A failed switch element. A trouble reporting card system was connected to switch common control elements. These trouble reporting systems punctured cardboard cards with a code that logged the nature of a failure. Electromechanical switching systems required sources of electricity in form of direct current (DC), as well as alternating ring current (AC), which were generated on-site with mechanical generators. In addition, telephone switches required adjustment of many mechanical parts. Unlike modern switches,

873-477: A few significant gardens were found in Britain which were developed under the influence of the continent. Britain's homegrown domestic gardening traditions were mostly practical in purpose, rather than aesthetic, unlike the grand gardens found mostly on castle grounds, and less commonly in universities. Tudor Gardens emphasized contrast rather than transitions, distinguished by color and illusion. They were not intended as

970-430: A form of twisted willow, Salix matsudana 'Tortuosa', from northern China, as well as a chusan palm ( Trachycarpus fortunei ), a common palm in the UK due to its hardiness. Underneath these trees are planted a number of shrubs, most noticeably laurels ( Aucuba japonica ) and hollies (such as Ilex aquifolium ), and several camellias ( Camellia japonica ) and a Fatsia japonica . The gardens provides homes for

1067-404: A horizontal panel containing two rows of patch cords, each pair connected to a cord circuit . When a calling party lifted the receiver, the local loop current lit a signal lamp near the jack. The operator responded by inserting the rear cord ( answering cord ) into the subscriber's jack and switched their headset into the circuit to ask, "Number, please?" For a local call, the operator inserted

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1164-411: A hundred pair cable between switches, for example. Conductors in one common circuit configuration were named tip, ring, ear (E) and mouth (M). Tip and ring were the voice-carrying pair, and named after the tip and ring on the three conductor cords on the manual operator's console. In two-way trunks with E and M signaling , a handshake took place to prevent both switches from colliding by dialing calls on

1261-623: A knowledge and experience of using plants. Some professional garden designers are also landscape architects , a more formal level of training that usually requires an advanced degree and often an occupational license . Elements of garden design include the layout of hard landscape, such as paths, rockeries, walls, water features, sitting areas and decking, as well as the plants themselves, with consideration for their horticultural requirements, their season-to-season appearance, lifespan, growth habit , size, speed of growth, and combinations with other plants and landscape features. Most gardens consist of

1358-485: A lamp on the operator's switchboard, signaling the operator to perform service. In the largest cities, it took many years to convert every office to automatic equipment, such as a panel switch . During this transition period, once numbers were standardized to the 2L-4N or 2L-5N format (two-letter exchange name and either four or five digits), it was possible to dial a number located in a manual exchange and be connected without requesting operator assistance. The policy of

1455-399: A manual office, having listings such as Hillside 834 or East 23, was recognizable by the format in which the second letter was not capitalized. Rural areas, as well as the smallest towns, had manual service and signaling was accomplished with magneto telephones, which had a crank for the signaling generator. To alert the operator, or another subscriber on the same line, the subscriber turned

1552-612: A mixture of natural and constructed elements, although even very 'natural' gardens are always an inherently artificial creation. Natural elements present in a garden principally comprise flora (such as trees and weeds ), fauna (such as arthropods and birds), soil, water, air and light. Constructed elements include not only paths, patios , decking, sculptures, drainage systems, lights and buildings (such as sheds , gazebos , pergolas and follies ), but also living constructions such as flower beds , ponds and lawns . Garden needs of maintenance are also taken into consideration. Including

1649-472: A number of London plane ( Platanus × hispanica ) trees, the predominant tree throughout central London due to their ability to cope with the capital's formerly heavily polluted air. Other trees, some able to grow only due to the gardens' sheltered spot and warm climate, include an Australian silver wattle ( Acacia dealbata ) and a Canary Islands date palm ( Phoenix canariensis ), three dawn redwood ( Metasequola glyptostroboides ) from south-east China, and

1746-477: A number of birds, including great tits , robins , magpies , blackbirds and goldcrests . Garden Gardens often have design features including statuary, follies , pergolas , trellises , stumperies , dry creek beds, and water features such as fountains , ponds (with or without fish ), waterfalls or creeks. Some gardens are for ornamental purposes only, while others also produce food crops, sometimes in separate areas, or sometimes intermixed with

1843-407: A private telephone exchange is termed a private branch exchange (PBX), which connects to the public switched telephone network. A PBX serves an organization's telephones and any private leased line circuits, typically situated in large office spaces or organizational campuses. Smaller setups might use a PBX or key telephone system managed by a receptionist, catering to the telecommunication needs of

1940-436: A single line. When calling a party, the operator used code ringing, a distinctive ringing signal sequence, such as two long rings followed by one short ring. Everyone on the line could hear the signals, and could pick up and monitor other people's conversations. Automatic exchanges , which provided dial service , were invented by Almon Strowger in 1888. First used commercially in 1892, they did not gain widespread use until

2037-740: A small enclosed area of land, usually adjoining a building. This would be referred to as a yard in American English . A garden can have aesthetic , functional, and recreational uses: The earliest recorded Chinese gardens were created in the valley of the Yellow River , during the Shang dynasty (1600–1046 BC). These gardens were large enclosed parks where the kings and nobles hunted game, or where fruit and vegetables were grown. Early inscriptions from this period, carved on tortoise shells, have three Chinese characters for garden, you , pu and yuan . You

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2134-617: A symbol for a plantation or a pomegranate tree. A famous royal garden of the late Shang dynasty was the Terrace, Pond and Park of the Spirit ( Lingtai, Lingzhao Lingyou ) built by King Wenwang west of his capital city, Yin . The park was described in the Classic of Poetry this way: Another early royal garden was Shaqui , or the Dunes of Sand , built by the last Shang ruler, King Zhou (1075–1046 BC). It

2231-513: A telephone with a dial tone . Telecommunication carriers also define rate centers for business and billing purposes, which in large cities, might encompass clusters of central offices to specify geographic locations for distance measurement calculations. In the 1940s, the Bell System in the United States and Canada introduced a nationwide numbering system that identified central offices with

2328-463: A trunk as idle. Trunk circuitry hearing a 2,600 Hz tone for a certain duration would go idle. (The duration requirement reduced falsing .) Some systems used tone frequencies over 3,000 Hz, particularly on SSB frequency-division multiplex microwave radio relays . On T-carrier binary digital transmission systems, bits within the T-1 data stream were used to transmit supervision. By careful design,

2425-476: A unique three-digit code, along with a three-digit numbering plan area code (NPA code or area code), making central office codes distinctive within each numbering plan area. These codes served as prefixes in subscriber telephone numbers. The mid-20th century saw similar organizational efforts in telephone networks globally, propelled by the advent of international and transoceanic telephone trunks and direct customer dialing. For corporate or enterprise applications,

2522-455: A winding stream". Korean gardens are a type of garden described as being natural, informal, simple and unforced, seeking to merge with the natural world. They have a history that goes back more than two thousand years, but are little known in the west. The oldest records date to the Three Kingdoms period (57 BC – 668 AD) when architecture and palace gardens showed a development noted in

2619-402: A year later. In 1887 Puskás introduced the multiplex switchboard . . Later exchanges consisted of one to several hundred plug boards staffed by switchboard operators . Each operator sat in front of a vertical panel containing banks of ¼-inch tip-ring-sleeve (3-conductor) jacks, each of which was the local termination of a subscriber 's telephone line . In front of the jack panel lay

2716-412: Is a crucial component in the public switched telephone network (PSTN) or large enterprise telecommunications systems. It facilitates the interconnection of telephone subscriber lines or digital system virtual circuits, enabling telephone calls between subscribers. The terminology used in telecommunications has evolved over time, with telephone exchange and central office often used interchangeably,

2813-512: Is a residential or public garden, but the term garden has traditionally been a more general one. Zoos , which display wild animals in simulated natural habitats, were formerly called zoological gardens. Western gardens are almost universally based on plants, with garden , which etymologically implies enclosure , often signifying a shortened form of botanical garden . Some traditional types of eastern gardens, such as Zen gardens , however, use plants sparsely or not at all. Landscape gardens, on

2910-675: Is located at Bolsover Castle in Derbyshire , but is too simple to attract much interest. During the reign of Charles II , many new Baroque style country houses were built; while in England Oliver Cromwell sought to destroy many Tudor, Jacobean and Caroline style gardens. Garden design is the process of creating plans for the layout and planting of gardens and landscapes. Gardens may be designed by garden owners themselves, or by professionals. Professional garden designers tend to be trained in principles of design and horticulture, and have

3007-462: The Bell System stated that customers in large cities should not need to be concerned with the type of office, whether they were calling a manual or an automatic office. When a subscriber dialed the number of a manual station, an operator at the destination office answered the call after seeing the number on an indicator , and connected the call by plugging a cord into the outgoing circuit and ringing

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3104-706: The Bell Telephone Company in Boston in 1877. The world's first state-administered telephone exchange opened on November 12, 1877 in Friedrichsberg close to Berlin under the direction of Heinrich von Stephan . George W. Coy designed and built the first commercial US telephone exchange which opened in New Haven, Connecticut in January, 1878, and the first telephone booth was built in nearby Bridgeport . The switchboard

3201-508: The Château de Blois . Beginning in 1528, King Francis I created new gardens at the Château de Fontainebleau , which featured fountains, parterres, a forest of pine trees brought from Provence , and the first artificial grotto in France. The Château de Chenonceau had two gardens in the new style, one created for Diane de Poitiers in 1551, and a second for Catherine de' Medici in 1560. In 1536,

3298-511: The City of Westminster Cemetery, Hanwell in west London was used instead. As the population of London grew, so did the demand upon the workhouse, and it became so overcrowded that in 1871 the decision was taken to move the workhouse to a new site, spurred on also by plans to widen Mount Street. In 1883, some land for the new workhouse on Buckingham Palace Road was bought from the new Duke of Westminster , Hugh Grosvenor , thricely-great-grand-nephew of

3395-567: The Commission for Building Fifty New Churches in 1723 as part of his development of the area around Mount Street, to serve as a burial ground for the parish church , St. George's, located in Hanover Square. Beside the burial ground, on South Audley Street , was planned the Grosvenor Chapel , but this was not built until 7 years after the burial ground was laid out, in 1730. To the north of

3492-572: The English Civil War named Oliver's Mount. Several structures in and adjacent to the gardens are listed Grade II on the National Heritage List for England . These include the fountain, two cisterns, and the two K2 telephone kiosks and the Portland stone gate piers with lamps at the entrance by South Audley Street. The land was originally sold by Sir Richard Grosvenor, 4th Bart. to

3589-462: The Western Electric 1ESS switch , Northern Telecom SP1 , Ericsson AXE, Automatic Electric EAX-1 & EAX-2, Philips PRX /A, ITT Metaconta, British GPO/BT TXE series and several other designs were similar. Ericsson also developed a fully computerized version of their ARF crossbar exchange called ARE. These used a crossbar switching matrix with a fully computerized control system and provided

3686-546: The crossbar switch . Circuits interconnecting switches are called trunks . Before Signalling System 7 , Bell System electromechanical switches in the United States originally communicated with one another over trunks using a variety of DC voltages and signaling tones. Today, those simple digital signals have been replaced by more modern coded digital signals (typically using binary code). Some signaling communicated dialed digits. An early form called Panel Call Indicator Pulsing used quaternary pulses to set up calls between

3783-409: The ornamental plants . Food-producing gardens are distinguished from farms by their smaller scale, more labor-intensive methods, and their purpose (enjoyment of a hobby or self-sustenance rather than producing for sale, as in a market garden ). Flower gardens combine plants of different heights, colors, textures, and fragrances to create interest and delight the senses. The most common form today

3880-415: The telephone when the user removes the handset from the switchhook or cradle. The exchange provides dial tone at that time to indicate to the user that the exchange is ready to receive dialed digits. The pulses or DTMF tones generated by the telephone are processed and a connection is established to the destination telephone within the same exchange or to another distant exchange. The exchange maintains

3977-522: The Baronet who originally sold the site of the burial ground, and paupers were transferred both to there and the parish's other workhouse at Little Chelsea on the Fulham Road , with the workhouse finally being demolished in 1886 and converted into more parish offices. After the demolition of the workhouse, the whole area was somewhat redeveloped; Carlos Place (then named Charles Street) was to be extended to

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4074-409: The Bell System required continuous maintenance, such as cleaning. Indicator lights on equipment bays alerted staff to conditions such as blown fuses (usually white lamps) or a permanent signal (stuck off-hook condition, usually green indicators). Step offices were more susceptible to single-point failures than newer technologies. Crossbar offices used more shared, common control circuits. For example,

4171-414: The Bell System. Electronic switching systems gradually evolved in stages from electromechanical hybrids with stored program control to the fully digital systems. Early systems used reed relay -switched metallic paths under digital control. Equipment testing, phone numbers reassignments, circuit lockouts and similar tasks were accomplished by data entry on a terminal. Examples of these systems included

4268-581: The French gardening traditions of Andre Mollet and Jacques Boyceau , from which the latter wrote: "All things, however beautiful they may be chosen, will be defective if they are not ordered and placed in proper symmetry." A good example of the French formal style are the Tuileries gardens in Paris which were originally designed during the reign of King Henry II in the mid-sixteenth century. The gardens were redesigned into

4365-617: The Isle of Wight, and parts of Beth Chatto 's garden in Essex, Sticky Wicket garden in Dorset, and the Royal Horticultural Society's gardens at Harlow Carr and Hyde Hall . Rain gardens absorb rainfall falling onto nearby hard surfaces, rather than sending it into stormwater drains. Telephone exchange A telephone exchange , also known as a telephone switch or central office ,

4462-621: The Korean History of the Three Kingdoms . Gardening was not recognized as an art form in Europe until the mid 16th century when it entered the political discourse, as a symbol of the concept of the "ideal republic". Evoking utopian imagery of the Garden of Eden , a time of abundance and plenty where humans didn't know hunger or the conflicts that arose from property disputes. John Evelyn wrote in

4559-469: The Strowger's typical 10 pps—typically about 20 pps. At a later date many also accepted DTMF "touch tones" or other tone signaling systems. A transitional technology (from pulse to DTMF) had converters to convert DTMF to pulse, to feed to older Strowger, panel, or crossbar switches. This technology was used as late as mid-2002. Many terms used in telecommunication technology differ in meaning and usage among

4656-471: The appropriated bits did not change voice quality appreciably. Robbed bits were translated to changes in contact states (opens and closures) by electronics in the channel bank hardware. This allowed direct current E and M signaling, or dial pulses, to be sent between electromechanical switches over a pure digital carrier which did not have DC continuity. Bell System installations typically had alarm bells, gongs, or chimes to announce alarms calling attention to

4753-490: The architect Philibert de l'Orme , upon his return from Rome, created the gardens of the Château d'Anet following the Italian rules of proportion. The carefully prepared harmony of Anet, with its parterres and surfaces of water integrated with sections of greenery, became one of the earliest and most influential examples of the classic French garden. The French formal garden ( French : jardin à la française ) contrasted with

4850-407: The automation of telephone circuit switching. While there were many extensions and adaptations of this initial patent, the one best known consists of 10 levels or banks, each having 10 contacts arranged in a semicircle. When used with a rotary telephone dial , each pair of digits caused the shaft of the central contact "hand" of the stepping switch to first step (ratchet) up one level for each pulse in

4947-478: The bronze drinking fountain of a rearing horse was designed for the local estate agent Henry Lofts in 1891 by Harold Peto and Sir Ernest George , who was also the designer of 104-111 Mount Street. As of 2005, the fountain is largely removed for restoration. The gravestones had been removed to the gardens' tool shed, but when the shed itself was demolished in 1931 to make way for the Mayfair telephone exchange between

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5044-468: The call only if intermediate trunk lines were available between all the centers at the same time. In 1943 when military calls had priority, a cross-country US call might take as long as 2 hours to request and schedule in cities that used manual switchboards for toll calls. On March 10, 1891, Almon Brown Strowger , an undertaker in Kansas City, Missouri , patented the stepping switch , a device which led to

5141-404: The chronicle recorded: "The Emperor Keikō put a few carp into a pond, and rejoiced to see them morning and evening". The following year, "The Emperor launched a double-hulled boat in the pond of Ijishi at Ihare, and went aboard with his imperial concubine, and they feasted sumptuously together". In 486, the chronicle recorded that "The Emperor Kenzō went into the garden and feasted at the edge of

5238-437: The circuit, allowing them to handle another call, while the caller heard an audible ringback signal, so that that operator would not have to periodically report that they were continuing to ring the line. In the ringdown method, the originating operator called another intermediate operator who would call the called subscriber, or passed it on to another intermediate operator. This chain of intermediate operators could complete

5335-419: The connection until one of the parties hangs up. This monitoring of connection status is called supervision. Additional features, such as billing equipment, may also be incorporated into the exchange. The Bell System dial service implemented a feature called automatic number identification (ANI) which facilitated services like automated billing, toll-free 800-numbers , and 9-1-1 service. In manual service,

5432-578: The crank to generate ringing current. The switchboard responded by interrupting the circuit, which dropped a metal tab above the subscriber's line jack and sounded a buzzer. Dry cell batteries, normally two large N°. 6 cells in the subscriber's telephone, provided the direct current for the transmitter. Such magneto systems were in use in the US as late as 1983, as in the small town, Bryant Pond, Woodstock, Maine . Many small town magneto systems featured party lines , anywhere from two to ten or more subscribers sharing

5529-1245: The death of living beings outside the garden, such as local species extinction by indiscriminate plant collectors ; and climate change caused by greenhouse gases produced by gardening. Gardeners can help to prevent climate change in many ways, including the use of trees, shrubs, ground cover plants and other perennial plants in their gardens, turning garden waste into soil organic matter instead of burning it, keeping soil and compost heaps aerated, avoiding peat, switching from power tools to hand tools or changing their garden design so that power tools are not needed, and using nitrogen-fixing plants instead of nitrogen fertiliser. Climate change will have many impacts on gardens; some studies suggest most of them will be negative. Gardens also contribute to climate change. Greenhouse gases can be produced by gardeners in many ways. The three main greenhouse gases are carbon dioxide , methane , and nitrous oxide . Gardeners produce carbon dioxide directly by overcultivating soil and destroying soil carbon , by burning garden waste on bonfires , by using power tools which burn fossil fuel or use electricity generated by fossil fuels , and by using peat . Gardeners produce methane by compacting

5626-480: The design principles of the English landscape garden ( French : jardin à l'anglaise ) namely, to "force nature" instead of leaving it undisturbed. Typical French formal gardens had "parterres, geometrical shapes and neatly clipped topiary", in contrast to the English style of garden in which "plants and shrubs seem to grow naturally without artifice." By the mid-17th century axial symmetry had ascended to prominence in

5723-516: The desired stylistic genres, and the way the garden space will connect to the home or other structures in the surrounding areas. All of these considerations are subject to the budget limitations. Budget limitations can be addressed by a simpler garden style with fewer plants and less costly hard landscape materials, seeds rather than sod for lawns, and plants that grow quickly; alternatively, garden owners may choose to create their garden over time, area by area. Gardeners may cause environmental damage by

5820-468: The destination station. For example, if a dial customer calling from TAylor 4725 dialed a number served by a manual exchange, e.g., ADams 1383-W, the call was completed, from the subscriber's perspective, exactly as a call to LEnnox 5813, in an automated exchange. The party line letters W, R, J, and M were only used in manual exchanges with jack-per-line party lines. In contrast to the listing format MAin 1234 for an automated office with two capital letters,

5917-504: The early 17th century, "there is not a more laborious life then is that of a good Gard'ners; but a labour full of tranquility and satisfaction; Natural and Instructive, and such as (if any) contributes to Piety and Contemplation." During the era of Enclosures , the agrarian collectivism of the feudal age was idealized in literary "fantasies of liberating regression to garden and wilderness". Following his campaign in Italy in 1495, where he saw

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6014-473: The enterprise. In the era of the electrical telegraph, its principal users were post offices, railway stations, the more important governmental centers (ministries), stock exchanges, very few nationally distributed newspapers, the largest internationally important corporations, and wealthy individuals. Despite the fact that telephone devices existed before the invention of the telephone exchange, their success and economical operation would have been impossible on

6111-486: The faster pulsing rate made trunk utilization more efficient because the switch spent half as long listening to digits. DTMF was not used for trunk signaling. Multi-frequency (MF) was the last of the pre-computerized methods. It used a different set of tones sent in pairs like DTMF. Dialing was preceded by a special keypulse (KP) signal and followed by a start (ST). Variations of the Bell System MF tone scheme became

6208-435: The first decade of the 20th century. They eliminated the need for human switchboard operators who completed the connections required for a telephone call . Automation replaced human operators with electromechanical systems, and telephones were equipped with a dial by which a caller transmitted the destination telephone number to the automatic switching system. A telephone exchange automatically senses an off-hook condition of

6305-424: The first digit and then to swing horizontally in a contact row with one small rotation for each pulse in the next digit. Later stepping switches were arranged in banks, the first stage of which was a linefinder . If one of up to a hundred subscriber lines (two hundred lines in later linefinders) had the receiver lifted "off hook", a linefinder connected the subscriber's line to a free first selector, which returned

6402-524: The formal French style for the Sun King Louis XIV . The gardens were ordered into symmetrical lines: long rows of elm or chestnut trees, clipped hedgerows, along with parterres, "reflect[ing] the orderly triumph of man's will over nature." The French landscape garden was influenced by the English landscape garden and gained prominence in the late eighteenth century. Before the Grand Manner era,

6499-399: The front cord of the pair ( ringing cord ) into the called party's local jack and started the ringing cycle. For a long-distance call, the operator plugged into a trunk circuit to connect to another operator in another bank of boards or at a remote central office. In 1918, the average time to complete the connection for a long-distance call was 15 minutes. Early manual switchboards required

6596-567: The gardens and Farm Street , the City Engineer's office made a copy of the inscriptions, now stored in City of Westminster Archives Centre, along with other records from the Parish. The paths in the gardens are lined with benches, many of which have been donated by the families of US citizens who have enjoyed the gardens whilst based at the nearby US embassy and other US institutions nearby. The garden has

6693-488: The gardens and castles of Naples, King Charles VIII brought Italian craftsmen and garden designers , such as Pacello da Mercogliano , from Naples and ordered the construction of Italian-style gardens at his residence at the Château d'Amboise and at Château Gaillard, another private résidence in Amboise. His successor Henry II , who had also travelled to Italy and had met Leonardo da Vinci , created an Italian garden nearby at

6790-518: The ground, the site of what is now 103 Mount Street, was the parish's workhouse , wherein the poor were given work, board, and lodgings, built in 1725 and then enlarged in the 1780s to provide room for the parish watchmen's watch-house and the parish office. In the 1850s, Parliament passed a series of Burial Acts by which burial grounds in central London, such as that of St. George's, were to be closed due to health risks. The parish's other burial ground, on Bayswater Road , closed shortly afterwards, and

6887-404: The impetus for the creation of a new industrial sector. As with the invention of the telephone itself, the honour of "first telephone exchange" has several claimants. One of the first to propose a telephone exchange was Hungarian Tivadar Puskás in 1877 while he was working for Thomas Edison . The first experimental telephone exchange was based on the ideas of Puskás, and it was built by

6984-548: The intricacy of the gardens could be viewed. Jacobean gardens were described as "a delightful confusion" by Henry Wotton in 1624. Under the influence of the Italian Renaissance , Caroline gardens began to shed some of the chaos of earlier designs, marking the beginning of a trends towards symmetrical unified designs that took the building architecture into account, and featuring an elevated terrace from which home and garden could be viewed. The only surviving Caroline garden

7081-408: The latter term originating from the Bell System . A central office typically refers to a facility that houses the inside plant equipment for one or several telephone exchanges, each catering to a specific geographical region. This region is sometimes known as the exchange area. In North America, the term wire center may be used to denote a central office location, indicating a facility that provides

7178-399: The number is in the same central office, and located on the operator's switchboard, the operator connects the call by plugging the ringing cord into the jack corresponding to the called customer's line. If the called party's line is on a different switchboard in the same office, or in a different central office, the operator plugs into the trunk for the destination switchboard or office and asks

7275-476: The number of digit receivers needed in a switch. Every task in electromechanical switches was done in big metallic pieces of hardware. Every fractional second cut off of call set up time meant fewer racks of equipment to handle call traffic. Examples of signals communicating supervision or call progress include E and M signaling , SF signaling, and robbed-bit signaling. In physical (not carrier) E and M trunk circuits, trunks were four wire. Fifty trunks would require

7372-432: The operator answering (known as the "B" operator) to connect the call. Most urban exchanges provided common-battery service, meaning that the central office provided power to the subscriber telephone circuits for operation of the transmitter, as well as for automatic signaling with rotary dials . In common-battery systems, the pair of wires from a subscriber's telephone to the exchange carry 48V (nominal) DC potential from

7469-538: The operator knows where a call is originating by the light on the switchboard jack field. Before ANI, long-distance calls were placed into an operator queue and the operator asked the calling party's number and recorded it on a paper toll ticket. Early exchanges were electromechanical systems using motors, shaft drives, rotating switches and relays . Some types of automatic exchanges were the Strowger switch or step-by-step switch, All Relay, panel switch , Rotary system and

7566-408: The operator to operate listening keys and ringing keys, but by the late 1910s and 1920s, advances in switchboard technology led to features which allowed the call to be automatically answered immediately as the operator inserted the answering cord, and ringing would automatically begin as soon as the operator inserted the ringing cord into the called party's jack. The operator would be disconnected from

7663-963: The other hand, such as the English landscape gardens first developed in the 18th century, may omit flowers altogether. Landscape architecture is a related professional activity with landscape architects tending to engage in design at many scales and working on both public and private projects. The etymology of the word gardening refers to enclosure : it is from Middle English gardin , from Anglo-French gardin , jardin , of Germanic origin; akin to Old High German gard , gart , an enclosure or compound, as in Stuttgart . See Grad (Slavic settlement) for more complete etymology. The words yard , court , and Latin hortus (meaning "garden", hence horticulture and orchard), are cognates—all referring to an enclosed space. The term "garden" in British English refers to

7760-590: The park in the Vana-krida chapter. Shilparatna , a text from the sixteenth century, states that flower gardens or public parks should be located in the northern portion of a town. The earliest recorded Japanese gardens were the pleasure gardens of the Emperors and nobles. They were mentioned in several brief passages of the Nihon Shoki , the first chronicle of Japanese history, published in 720 CE. In spring 74 CE,

7857-427: The part being worked on as in-use, causing the switching logic to route around it. A similar tool was called a TD tool. Delinquent subscribers had their service temporarily denied (TDed). This was effected by plugging a tool into the subscriber's office equipment on Crossbar systems or line group in step-by-step switches. The subscriber could receive calls but could not dial out. Strowger-based, step-by-step offices in

7954-496: The roasted meat from the trees. Later Chinese philosophers and historians cited this garden as an example of decadence and bad taste. During the Spring and Autumn period (722–481 BC), in 535 BC, the Terrace of Shanghua , with lavishly decorated palaces, was built by King Jing of the Zhou dynasty . In 505 BC, an even more elaborate garden, the Terrace of Gusu , was begun. It was located on

8051-679: The same schema and structure of the contemporary telegraph, as prior to the invention of the telephone exchange switchboard, early telephones were hardwired to and communicated with only a single other telephone (such as from an individual's home to the person's business ). A telephone exchange is a telephone system for a small geographic area that provides the switching (interconnection) of subscriber lines for calls made between them. Telephone exchanges replaced small telephone systems that connected its users with direct lines between each and every subscriber station. Exchanges made telephony an available and comfortable technology for everyday use and it gave

8148-414: The same trunk at the same time. By changing the state of these leads from ground to −48 volts, the switches stepped through a handshake protocol. Using DC voltage changes, the local switch would send a signal to get ready for a call and the remote switch would reply with an acknowledgment (a wink) to go ahead with dial pulsing. This was done with relay logic and discrete electronics. These voltage changes on

8245-509: The side of a mountain, and included a series of terraces connected by galleries, along with a lake where boats in the form of blue dragons navigated. From the highest terrace, a view extended as far as Lake Tai , the Great Lake. Manasollasa is a twelfth century Sanskrit text that offers details on garden design and a variety of other subjects. Both public parks and woodland gardens are described, with about 40 types of trees recommended for

8342-448: The soil and making it anaerobic, and by allowing their compost heaps to become compacted and anaerobic. Gardeners produce nitrous oxide by applying excess nitrogen fertiliser when plants are not actively growing so that the nitrogen in the fertiliser is converted by soil bacteria to nitrous oxide. Some gardeners manage their gardens without using any water from outside the garden. Examples in Britain include Ventnor Botanic Garden on

8439-589: The south of Mount Street over the site of the workhouse's chapel for access to the Church of the Immaculate Conception on Farm Street . The church, built between 1844 and 1849, was in a decorated gothic -style, designed by Joseph John Scoles , and with the altar by A.W.N. Pugin , and is now a Grade II* listed building . However, the new road planned through the disused burial ground was never built. The gardens' footpaths are those originally created in 1889, and

8536-457: The subscriber a dial tone to show that it was ready to receive dialled digits. The subscriber's dial pulsed at about 10 pulses per second, although the speed depended on the standard of the particular telephone administration. Exchanges based on the Strowger switch were eventually challenged by other exchange types and later by crossbar technology. These exchange designs promised faster switching and would accept inter-switch pulses faster than

8633-400: The telephone company end across the conductors. The telephone presents an open circuit when it is on-hook or idle. When a subscriber's phone is off-hook, it presents an electrical resistance across the line which causes current to flow through the telephone and wires to the central office. In a manually operated switchboard, this current flowed through a relay coil, and actuated a buzzer or

8730-418: The time or funds available for regular maintenance, (this can affect the choices of plants regarding speed of growth) spreading or self-seeding of the plants (annual or perennial), bloom-time, and many other characteristics. Garden design can be roughly divided into two groups, formal and naturalistic gardens. The most important consideration in any garden design is how the garden will be used, followed closely by

8827-434: The trunk circuit would cause pops or clicks that were audible to the subscriber as the electrical handshaking stepped through its protocol. Another handshake, to start timing for billing purposes, caused a second set of clunks when the called party answered. A second common form of signaling for supervision was called single-frequency or SF signaling . The most common form of this used a steady 2,600 Hz tone to identify

8924-451: The various English speaking regions. For the purpose of this article the following definitions are made: A central office originally was a primary exchange in a city with other exchanges service parts of the area. The term became to mean any switching system including its facilities and operators. It is also used generally for the building that houses switching and related inside plant equipment. In United States telecommunication jargon,

9021-533: The way they garden, or they may enhance their local environment. Damage by gardeners can include direct destruction of natural habitats when houses and gardens are created; indirect habitat destruction and damage to provide garden materials such as peat , rock for rock gardens, and by the use of tapwater to irrigate gardens; the death of living beings in the garden itself, such as the killing not only of slugs and snails but also their predators such as hedgehogs and song thrushes by metaldehyde slug killer;

9118-445: Was a royal garden where birds and animals were kept, while pu was a garden for plants. During the Qin dynasty (221–206 BC), yuan became the character for all gardens. The old character for yuan is a small picture of a garden; it is enclosed in a square which can represent a wall, and has symbols which can represent the plan of a structure, a small square which can represent a pond, and

9215-580: Was built from "carriage bolts, handles from teapot lids and bustle wire" and could handle two simultaneous conversations. Charles Glidden is also credited with establishing an exchange in Lowell, MA. with 50 subscribers in 1878. In Europe other early telephone exchanges were based in London and Manchester , both of which opened under Bell patents in 1879. Belgium had its first International Bell exchange (in Antwerp )

9312-612: Was composed of an earth terrace, or tai , which served as an observation platform in the center of a large square park. It was described in one of the early classics of Chinese literature, the Records of the Grand Historian ( Shiji ). According to the Shiji , one of the most famous features of this garden was the Wine Pool and Meat Forest (酒池肉林). A large pool, big enough for several small boats,

9409-401: Was constructed on the palace grounds, with inner linings of polished oval shaped stones from the seashore. The pool was then filled with wine. A small island was constructed in the middle of the pool, where trees were planted, which had skewers of roasted meat hanging from their branches. King Zhou and his friends and concubines drifted in their boats, drinking the wine with their hands and eating

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