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Call Handling Rate In telecommunications, call volume refers to the number of telephone calls made during a certain time period. Depending on context, the phrase may refer to either the number of calls made to a specific physical area or telephone number (such as an emergency service) or the number of calls made between two or more areas (e.g. cities). Calls Per Second or CPS refers to how many telephone calls can be handled in a second. CPS is one measure of the performance of Switching systems [...More...]  "Call Handling Rate" on: Wikipedia Yahoo Parouse 

Mathematics Mathematics Mathematics (from Greek μάθημα máthēma, "knowledge, study, learning") is the study of such topics as quantity,[1] structure,[2] space,[1] and change.[3][4][5] It has no generally accepted definition.[6][7] Mathematicians seek out patterns[8][9] and use them to formulate new conjectures. Mathematicians resolve the truth or falsity of conjectures by mathematical proof. When mathematical structures are good models of real phenomena, then mathematical reasoning can provide insight or predictions about nature. Through the use of abstraction and logic, mathematics developed from counting, calculation, measurement, and the systematic study of the shapes and motions of physical objects. Practical mathematics has been a human activity from as far back as written records exist [...More...]  "Mathematics" on: Wikipedia Yahoo Parouse 

Telecommunications Telecommunication Telecommunication is the transmission of signs, signals, messages, words, writings, images and sounds or information of any nature by wire, radio, optical or other electromagnetic systems.[1][2] Telecommunication Telecommunication occurs when the exchange of information between communication participants includes the use of technology. It is transmitted either electrically over physiical media, such as cables, or via electromagnetic radiation.[3][4][5][6][7][8] Such transmission paths are often divided into communication channels which afford the advantages of multiplexing [...More...]  "Telecommunications" on: Wikipedia Yahoo Parouse 

International Standard Book Number "ISBN" redirects here. For other uses, see ISBN (other).International Standard Book Book NumberA 13digit ISBN, 9783161484100, as represented by an EAN13 bar codeAcronym ISBNIntroduced 1970; 48 years ago (1970)Managing organisation International ISBN AgencyNo. of digits 13 (formerly 10)Check digit Weighted sumExample 9783161484100Website www.isbninternational.orgThe International Standard Book Book Number (ISBN) is a unique[a][b] numeric commercial book identifier. Publishers purchase ISBNs from an affiliate of the International ISBN Agency.[1] An ISBN is assigned to each edition and variation (except reprintings) of a book. For example, an ebook, a paperback and a hardcover edition of the same book would each have a different ISBN. The ISBN is 13 digits long if assigned on or after 1 January 2007, and 10 digits long if assigned before 2007 [...More...]  "International Standard Book Number" on: Wikipedia Yahoo Parouse 

Prentice Hall Prentice Hall Prentice Hall is a major educational publisher owned by Pearson plc. Prentice Hall Prentice Hall publishes print and digital content for the 6–12 and highereducation market. Prentice Hall Prentice Hall distributes its technical titles through the Safari Books Online ereference service.Contents1 History 2 Notable titles 3 In "personal computer" history 4 See also 5 References 6 External linksHistory[edit] On October 13, 1913, law professor Charles Gerstenberg and his student Richard Ettinger founded Prentice Hall. Gerstenberg and Ettinger took their mothers' maiden names—Prentice and Hall—to name their new company.[1] Prentice Hall Prentice Hall was acquired by Gulf+Western Gulf+Western in 1984, and became part of that company's publishing division Simon & Schuster. Publication of trade books ended in 1991[2] [...More...]  "Prentice Hall" on: Wikipedia Yahoo Parouse 

Pearson PLC Pearson plc Pearson plc is a British multinational publishing and education company headquartered in London. It was founded as a construction business in the 1840s. It shut down its construction activities in the 1920s and switched to publishing. It is the largest education company and the largest book publisher in the world.[2][3] Pearson has a primary listing on the London Stock Exchange London Stock Exchange and is a constituent of the FTSE 100 Index [...More...]  "Pearson PLC" on: Wikipedia Yahoo Parouse 

Teletraffic Engineering Telecommunications Telecommunications traffic engineering, teletraffic engineering, or traffic engineering is the application of traffic engineering theory to telecommunications. Teletraffic engineers use their knowledge of statistics including queuing theory, the nature of traffic, their practical models, their measurements and simulations to make predictions and to plan telecommunication networks such as a telephone network or the Internet. These tools and knowledge help provide reliable service at lower cost. The field was created by the work of A. K. Erlang for circuitswitched networks but is applicable to packetswitched networks, as they both exhibit Markovian properties, and can hence be modeled by e.g [...More...]  "Teletraffic Engineering" on: Wikipedia Yahoo Parouse 

Inverse Square The inversesquare law, in physics, is any physical law stating that a specified physical quantity or intensity is inversely proportional to the square of the distance from the source of that physical quantity. The fundamental cause for this can be understood as geometric dilution corresponding to pointsource radiation into threedimensional space (see diagram). Radar energy expands during both the signal transmission and also on the reflected return, so the inverse square for both paths means that the radar will receive energy according to the inverse fourth power of the range. In order to prevent dilution of energy while propagating a signal, certain methods can be used such as a waveguide, which acts like a canal does for water, or how a gun barrel restricts hot gas expansion to one dimension in order to prevent loss of energy transfer to a bullet.Contents1 Formula 2 Justification 3 Occurrences3.1 Gravitation 3.2 Electrostatics 3.3 Light and other electromagnet [...More...]  "Inverse Square" on: Wikipedia Yahoo Parouse 

Textbook A textbook or coursebook (UK English) is a manual of instruction in any branch of study. Textbooks are produced according to the demands of educational institutions [...More...]  "Textbook" on: Wikipedia Yahoo Parouse 

Linear Equation A linear equation is an algebraic equation in which each term is either a constant or the product of a constant and (the first power of) a single variable (however, different variables may occur in different terms). A simple example of a linear equation with only one variable, x, may be written in the form: ax + b = 0, where a and b are constants and a ≠ 0. The constants may be numbers, parameters, or even nonlinear functions of parameters, and the distinction between variables and parameters may depend on the problem (for an example, see linear regression). Linear equations can have one or more variables. An example of a linear equation with three variables, x, y, and z, is given by: ax + by + cz + d = 0, where a, b, c, and d are constants and a, b, and c are nonzero. Linear equations occur frequently in most subareas of mathematics and especially in applied mathematics [...More...]  "Linear Equation" on: Wikipedia Yahoo Parouse 

Telecommunication Telecommunication Telecommunication is the transmission of signs, signals, messages, words, writings, images and sounds or information of any nature by wire, radio, optical or other electromagnetic systems.[1][2] Telecommunication Telecommunication occurs when the exchange of information between communication participants includes the use of technology. It is transmitted either electrically over physiical media, such as cables, or via electromagnetic radiation.[3][4][5][6][7][8] Such transmission paths are often divided into communication channels which afford the advantages of multiplexing [...More...]  "Telecommunication" on: Wikipedia Yahoo Parouse 

Forecasting Forecasting is the process of making predictions of the future based on past and present data and most commonly by analysis of trends. A commonplace example might be estimation of some variable of interest at some specified future date. Prediction Prediction is a similar, but more general term. Both might refer to formal statistical methods employing time series, crosssectional or longitudinal data, or alternatively to less formal judgmental methods [...More...]  "Forecasting" on: Wikipedia Yahoo Parouse 

Busyhour Call Attempts In telecommunications, busyhour call attempts (BHCA) is a teletraffic engineering measurement used to evaluate and plan capacity for telephone networks.[1] BHCA is the number of telephone calls attempted at the sliding 60minute period during which occurs the maximum total traffic load in a given 24hour period (BHCA), and the higher the BHCA, the higher the stress on the network processors. BHCA is not to be confused with busy hour call completion (BHCC) which measures the throughput capacity of the network. If a bottleneck in the network exists with a capacity lower than the estimated BHCA, then congestion will occur resulting in many failed calls and customer dissatisfaction. BHCA is usually used when planning telephone switching capacities and frequently goes side by side with the Erlang unit capacity calculation. As an example, a telephone exchange with a capacity of one million BHCA is estimated to handle 250,000 subscribers [...More...]  "Busyhour Call Attempts" on: Wikipedia Yahoo Parouse 

Telephone Exchange A telephone exchange is a telecommunications system used in the public switched telephone network or in large enterprises. An exchange consists of electronic components and in older systems also human operators that interconnect (switch) telephone subscriber lines or virtual circuits of digital systems to establish telephone calls between subscribers. In historical perspective, telecommunication terms have been used with different semantics over time. The term telephone exchange is often used synonymously with central office (CO), a Bell System Bell System term. Often, a central office is defined as a building used to house the inside plant equipment of potentially several telephone exchanges, each serving a certain geographical area. Such an area has also been referred to as the exchange [...More...]  "Telephone Exchange" on: Wikipedia Yahoo Parouse 

Emergency Service Emergency Emergency services and rescue services[1] are organizations which ensure public safety and health by addressing different emergencies. Some of these agencies exist solely for addressing certain types of emergencies whilst others deal with ad hoc emergencies as part of their normal responsibilities [...More...]  "Emergency Service" on: Wikipedia Yahoo Parouse 

Telephone Number A telephone number is a sequence of digits assigned to a fixedline telephone subscriber station connected to a telephone line or to a wireless electronic telephony device, such as a radio telephone or a mobile telephone, or to other devices for data transmission via the public switched telephone network (PSTN) or other private networks. A telephone number serves as an address for switching telephone calls using a system of destination code routing.[1] Telephone Telephone numbers are entered or dialed by a calling party on the originating telephone set, which transmits the sequence of digits in the process of signaling to a telephone exchange. The exchange completes the call either to another locally connected subscriber or via the PSTN to the called party [...More...]  "Telephone Number" on: Wikipedia Yahoo Parouse 