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標(biāo)題: Titlebook: Digital Telephony and Network Integration; Bernhard E. Keiser,Eugene Strange Book 1985 Springer Science+Business Media New York 1985 ISDN. [打印本頁(yè)]

作者: supplementary    時(shí)間: 2025-3-21 19:32
書(shū)目名稱Digital Telephony and Network Integration影響因子(影響力)




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書(shū)目名稱Digital Telephony and Network Integration網(wǎng)絡(luò)公開(kāi)度




書(shū)目名稱Digital Telephony and Network Integration網(wǎng)絡(luò)公開(kāi)度學(xué)科排名




書(shū)目名稱Digital Telephony and Network Integration被引頻次




書(shū)目名稱Digital Telephony and Network Integration被引頻次學(xué)科排名




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書(shū)目名稱Digital Telephony and Network Integration讀者反饋




書(shū)目名稱Digital Telephony and Network Integration讀者反饋學(xué)科排名





作者: 法律的瑕疵    時(shí)間: 2025-3-21 21:27
Speech Digitization Fundamentals,form to a series of ones and zeros. A multitude of speech digitization methods has been devised; these methods can be categorized as waveform, parametric, and hybrid coding. A . takes the actual waveform and produces a series of ones and zeros representative of that waveform according to a set of ru
作者: Cougar    時(shí)間: 2025-3-22 04:16
Pulse Code Modulation, To clarify the concept, however, the first point to be made is that PCM . coding, but it . necessarily the modulation of the carrier. Modulation usually refers to an alteration of a periodic function (often a radio frequency sine wave) to cause it to convey intelligence. This alteration may be a ch
作者: 騎師    時(shí)間: 2025-3-22 06:40

作者: 蓋他為秘密    時(shí)間: 2025-3-22 10:05
Digital Techniques in the Telephone Network,on and time-division multiplexing and then covers the basic functions of error coding, scrambling and channel coding. Figure 5-1 relates these functions to one another as well as to source coding as they might be found in a generalized digital transmission system. Signaling and supervision are cover
作者: Mhc-Molecule    時(shí)間: 2025-3-22 15:15
Digital Transmission,.e.r.) to assure satisfactory performance of the system from the users’ viewpoints. This means, for voice, a bit error rate that generally does not exceed 10., since 64-kb/s PCM performance is quite good if the b.e.r. is kept to this value or lower. Other voice coding techniques, such as ADPCM, can
作者: Mhc-Molecule    時(shí)間: 2025-3-22 20:55

作者: LAVE    時(shí)間: 2025-3-23 00:21
Satellite Transmission,he first commercial satellite, in 1965. Numerous military satellite systems parallel the development of the commercial systems. The first domestic commercial satellite was Telesat’s . (Canadian), followed by Western Union’s . (U.S.). Because of the predominance of analog voice communication during t
作者: Hangar    時(shí)間: 2025-3-23 03:04
The Circuit Switching Environment,igned 50 or 60 years ago to the very latest digital switching systems. Signaling systems are the languages used by switching systems to “talk” to each other. Some signaling systems were designed to be used only on metallic conductors. Others employ signaling concepts suitable for use over derived ci
作者: Stress-Fracture    時(shí)間: 2025-3-23 08:29
Digital Switching Architecture,itching network. Several fundamental questions must be answered, and each must then be followed by a large number of decisions, most of which involve trade-offs. Some of the most prominent questions which require major decisions up front are:
作者: Tailor    時(shí)間: 2025-3-23 11:20
Operational Switching Systems,ems. Although some size capacities and other operating parameters are presented for the purpose of perspective, the emphasis in this chapter is on overall system architecture (review Section 10.3 and Fig. 10-1).
作者: 注意力集中    時(shí)間: 2025-3-23 17:25
Evolution of the Switched Digital Network,ork. As the evolution progresses over a period of many years, digital switching systems and digital transmission facilities are being added at the discretion of some 1500 separate telecommunications companies.
作者: progestogen    時(shí)間: 2025-3-23 18:53

作者: 改革運(yùn)動(dòng)    時(shí)間: 2025-3-23 22:50

作者: 耕種    時(shí)間: 2025-3-24 04:55

作者: 熱烈的歡迎    時(shí)間: 2025-3-24 08:13
https://doi.org/10.1007/978-94-011-0754-9itching network. Several fundamental questions must be answered, and each must then be followed by a large number of decisions, most of which involve trade-offs. Some of the most prominent questions which require major decisions up front are:
作者: Mobile    時(shí)間: 2025-3-24 13:16
https://doi.org/10.1007/978-94-011-0754-9ems. Although some size capacities and other operating parameters are presented for the purpose of perspective, the emphasis in this chapter is on overall system architecture (review Section 10.3 and Fig. 10-1).
作者: 治愈    時(shí)間: 2025-3-24 15:07
Extrabiotic Replication and Self-Assemblyork. As the evolution progresses over a period of many years, digital switching systems and digital transmission facilities are being added at the discretion of some 1500 separate telecommunications companies.
作者: MORPH    時(shí)間: 2025-3-24 20:30

作者: BYRE    時(shí)間: 2025-3-24 23:56

作者: STENT    時(shí)間: 2025-3-25 06:14

作者: Salivary-Gland    時(shí)間: 2025-3-25 11:08
Operational Switching Systems,ems. Although some size capacities and other operating parameters are presented for the purpose of perspective, the emphasis in this chapter is on overall system architecture (review Section 10.3 and Fig. 10-1).
作者: Ischemia    時(shí)間: 2025-3-25 14:33

作者: Hot-Flash    時(shí)間: 2025-3-25 16:27
http://image.papertrans.cn/d/image/279776.jpg
作者: TRACE    時(shí)間: 2025-3-25 21:32
https://doi.org/10.1007/978-94-015-7177-7ISDN; Segment; Switching; communication system; evolution; growth; network management; repeater; routing; tel
作者: 桉樹(shù)    時(shí)間: 2025-3-26 00:35

作者: 運(yùn)動(dòng)吧    時(shí)間: 2025-3-26 06:15
https://doi.org/10.1007/978-3-031-27685-9tinue for the foreseeable future. It is becoming increasingly difficult to distinguish one telephone network from another now that direct dialing is available in most countries, but we still do not have a single, worldwide network.
作者: Nefarious    時(shí)間: 2025-3-26 10:49

作者: 分解    時(shí)間: 2025-3-26 12:36

作者: 寬宏大量    時(shí)間: 2025-3-26 19:08
Sara Orthaber,Rosina Márquez Reiterhe conducted spectrum that exists on any cable transmission facility. Numerous multilevel modulation techniques (see Chapter 6) have been devised to increase the number of bits per second that can be transmitted per Hertz of bandwidth. It should be no surprise, therefore, that significant efforts ar
作者: hurricane    時(shí)間: 2025-3-26 21:16

作者: ELUC    時(shí)間: 2025-3-27 03:31
Self-Praise Across Cultures and Contexts.e.r.) to assure satisfactory performance of the system from the users’ viewpoints. This means, for voice, a bit error rate that generally does not exceed 10., since 64-kb/s PCM performance is quite good if the b.e.r. is kept to this value or lower. Other voice coding techniques, such as ADPCM, can
作者: unstable-angina    時(shí)間: 2025-3-27 09:19
Mathematics and Models for Autopoiesise portion of the world’s circuits as well. While much of this message circuit distance is on an analog basis, digital service constitutes an increasing portion of microwave transmission as well. Microwave systems not only provide feeder service to long haul coaxial backbone routes but also provide c
作者: 柔聲地說(shuō)    時(shí)間: 2025-3-27 11:42
Autopoietic Organizations and Social Systemshe first commercial satellite, in 1965. Numerous military satellite systems parallel the development of the commercial systems. The first domestic commercial satellite was Telesat’s . (Canadian), followed by Western Union’s . (U.S.). Because of the predominance of analog voice communication during t
作者: ASSAY    時(shí)間: 2025-3-27 13:59
Mathematics and Models for Autopoiesisigned 50 or 60 years ago to the very latest digital switching systems. Signaling systems are the languages used by switching systems to “talk” to each other. Some signaling systems were designed to be used only on metallic conductors. Others employ signaling concepts suitable for use over derived ci
作者: Permanent    時(shí)間: 2025-3-27 19:18
https://doi.org/10.1007/978-94-011-0754-9itching network. Several fundamental questions must be answered, and each must then be followed by a large number of decisions, most of which involve trade-offs. Some of the most prominent questions which require major decisions up front are:
作者: Flirtatious    時(shí)間: 2025-3-27 23:15
https://doi.org/10.1007/978-94-011-0754-9ems. Although some size capacities and other operating parameters are presented for the purpose of perspective, the emphasis in this chapter is on overall system architecture (review Section 10.3 and Fig. 10-1).
作者: 浮夸    時(shí)間: 2025-3-28 04:34

作者: Chivalrous    時(shí)間: 2025-3-28 10:07
Self-Production of Supramolecular Structures Modulation (PCM) of Voice Frequencies. This provided for a sampling rate of 8000 per second and 8-bit encoding/decoding with either A-law or μ-law companding (see Chapter 3). In 1980, the plenary assembly approved Recommendation G.705 which recognized that substantial agreement had been reached in
作者: Hla461    時(shí)間: 2025-3-28 10:46

作者: Astigmatism    時(shí)間: 2025-3-28 16:52
Fiber Optic Transmission,Fiber optic transmission can be implemented wherever coaxial cable or wire-pair transmission is used. Its areas of present and future application extend all the way from the subscriber loop. to transoceanic cables..
作者: 真實(shí)的你    時(shí)間: 2025-3-28 20:17

作者: inflate    時(shí)間: 2025-3-29 01:56

作者: crucial    時(shí)間: 2025-3-29 07:05

作者: enlist    時(shí)間: 2025-3-29 09:13
Self-Promoting: A Double-Edged Swordange in amplitude or frequency or phase of the sine wave. These are the ways in which a carrier can be modulated. The PCM process, in contrast, is a coding technique. The resulting stream of ones and zeros can be used to modulate a carrier in any of the ways mentioned here, or special combinations of them.
作者: Jacket    時(shí)間: 2025-3-29 13:25

作者: Crumple    時(shí)間: 2025-3-29 16:20

作者: 債務(wù)    時(shí)間: 2025-3-29 20:04
Mathematics and Models for Autopoiesisross-country service through the use of multiple repeater sites. Thus individual circuit lengths range from less than 30 km to over 6400 km with route cross-sectional capacities from less than 60 to more than 22 000 circuits. Applications include not only telephone message channels but also wideband data and television transmission.
作者: keloid    時(shí)間: 2025-3-30 00:43

作者: infarct    時(shí)間: 2025-3-30 05:11
Self-Production of Supramolecular Structuresstudies of integrated digital networds (IDN) for telephony and that studies leading to an integrated services digital network (ISDN) were needed. Some conceptual principles to guide the studies provided for:
作者: LVAD360    時(shí)間: 2025-3-30 10:29

作者: 密切關(guān)系    時(shí)間: 2025-3-30 14:38
https://doi.org/10.1007/978-3-030-99217-0ns to one another as well as to source coding as they might be found in a generalized digital transmission system. Signaling and supervision are covered next, followed by monitoring and digital speech interpolation.




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