intTypePromotion=1

Analogue and digital networks

Xem 1-14 trên 14 kết quả Analogue and digital networks
  • (Dùng cho sinh viên hệ đào tạo đại học từ xa) UNIT 1 Exercise 1. Read the following passage then answer the questions. ANALOGUE AND DIGITAL NETWORKS Digital technology in the telephone network is nothing new. Take all the relays in older exchanges as an example. Relays are either "off" or "on", and there is no state in between these. Suitable combinations of relays could build up and "remember" numbers - perhaps a far-fetched example, but in was digital, so it will serve!...

    pdf86p nguyethap 27-03-2013 128 46   Download

  • 1. Read the following passage then answer the questions. ANALOGUE AND DIGITAL NETWORKS Digital technology in the telephone network is nothing new. Take all the relays in older exchanges as an example. Relays are either "off" or "on", and there is no state in between these. Suitable combinations of relays could build up and "remember" numbers - perhaps a far-fetched example, but in was digital, so it will serve! What is new is the transfer of speech digitally. In other words, the sound we make when we speak is converted to digits and sent out on to the network. In...

    pdf86p muaythai3 19-09-2011 40 7   Download

  • ANALOGUE AND DIGITAL NETWORKS Digital technology in the telephone network is nothing new. Take all the relays in older exchanges as an example. Relays are either "off" or "on", and there is no state in between these. Suitable combinations of relays could build up and "remember" numbers - perhaps a far-fetched example, but in was digital, so it will serve!

    pdf86p truongbao 28-07-2009 653 241   Download

  • Exercise 1. Read the following passage then answer the questions. ANALOGUE AND DIGITAL NETWORKS Digital technology in the telephone network is nothing new. Take all the relays in older exchanges as an example. Relays are either "off" or "on", and there is no state in between these. Suitable combinations of relays could build up and "remember" numbers - perhaps a far-fetched example, but in was digital, so it will serve! What is new is the transfer of speech digitally. In other words, the sound we make when we speak is converted to digits and sent out on to the network....

    pdf86p longmontran 15-01-2010 183 122   Download

  • Topics in Digital Communications Digital communication system advantages and disadvantages Digital communication system classification Digitization of analog signals Digital transmission systems Data communication systems Integrated Services Digital Network and other advanced digital communication systems.

    pdf139p dotai46 07-05-2012 71 18   Download

  • Zigital speech processing is a maCor field in current research all oAer the world. -n particular for automatic speech recognition [8?O\, Aery significant achieAements haAe been made since the first attempts of digit recogni]ers in the YU^G_s and YUXG_s when spectral resonances were determined by analogue filters and logical circuits.

    pdf0p bi_bi1 11-07-2012 43 6   Download

  • Classification a. Means of transmission b. Service c. Circuit switched network d. Method of signalling e. Electronic system f. Light sources g. Remote part of an exchange Characteristics /Function A. It provides a means of asynchronous data transmission. B. It uses one pair for performing all signalling functions of one route. C. It involves the sampling and coding of analogue signals. D. They enable PCM transmission to be used further out in the local network.

    pdf8p bichtram861 21-05-2011 85 25   Download

  • NETWORKING ASPECTS NETWORK FUNCTIONS As mentioned in Chapter 1,VSAT networks usually offer communications service between user terminals. These terminals generate baseband signals that are analogue or digital,predominantly digital.

    pdf63p tienvovan 18-09-2010 75 14   Download

  • Drivers for the Adoption of Multi-service Networks Digitalization of entertainment and other consumer content makes it possible to use available transmission media resources more efficiently, to use universal storage solutions for the content while providing end user quality experience equal to or better than analogue media. This leads to the need for speech, music, pictures and streamed content to be delivered to homes and mobile users in digital form.

    pdf8p huggoo 20-08-2010 70 10   Download

  • From Analogue Car Telephone to Digital Pocket Phone CEPT took a very much forward looking decision when it decided to create, as early as 1982, the GSM Group with the mandate to define a second generation harmonised cellular system in Europe. At that time, the true market potential for mobile systems was not known. Also many technologies, which became key to the GSM radio design, were just emerging. This is true particularly of cellular networking, digital signal processing and real-time computing...

    pdf31p huggoo 20-08-2010 69 9   Download

  • How VoIP & Active Managed Networks Increase Productivity and Save You Money The Way to the Future! Structured Cabling has been evolving with technology and the installed base expanding, for the past 15 years. During that time it has served its purpose well. It has proven to be a flexible infrastructure platform on which corporate data can be reliably transported, using every imaginable signal type ranging from analogue voice to a wide variety of digital protocols.

    pdf4p qd-tek 28-04-2010 59 6   Download

  • A Telecommunications View of the Total Area Network Intelligence is quickness to apprehend as distinct from ability, which is capacity to act wisely on the thing apprehended Alfred North Whitehead We have seen in Chapter 3 that the Integrated Digital Network (IDN) and ISDN evolved from the analogue Public Switched Telephone Network (PSTN). And we have seen as part of this evolution how the network has been logically segregated into a ‘switched information’ subnet (the user-plane or U-plane in ISDN parlance) and a ‘signalling’ subnet (the control-plane or C-plane)....

    pdf27p tienvovan 18-09-2010 44 4   Download

  • The Transmission Infrastructure We pass by transmission on the way to the Intelligent Network (IN) because it is important to understand how all the switching and signalling nodes (not to mention voice links) are connected together. Like the last chapter, we will pass briefly through analogue transmission first as a means of exposing the desires for digital transmission. Then move on to digitisation of speech and look at how large volumes of calls are economically carried across the world.

    pdf13p huggoo 23-08-2010 56 5   Download

  • Besides cellular mobile radio networks that are primarily envisaged for use outdoors, systems that have been specifically designed for use in buildings are also important. In recent years cordless telephones with a range of a few hundred metres have become increasingly popular in private households. There is (along with CT2/CAI) a digital alternative to these analogue devices that offers better voice quality and a greater security against eavesdropping, as well as other advantages: the DECT system....

    pdf124p huggoo 20-08-2010 53 3   Download

CHỦ ĐỀ BẠN MUỐN TÌM


p_strKeyword=Analogue and digital networks
p_strCode=analogueanddigitalnetworks

nocache searchPhinxDoc
Đồng bộ tài khoản