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digital subscriber line modems

Asymmetric Digital Subscriber Line (ADSL)

Asymmetric Digital Subscriber Line (ADSL)

... As customers started buying and using modems, speed and reliability became important issues. Each vendor tried to get as close to the limit expressed by Shannon's Law as they could. Until Recommendation V.32, all ...

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Technology Brief. Implementing DSL Service for ISPs with the SMS. The DSL Opportunity. DSL is Different from Dial

Technology Brief. Implementing DSL Service for ISPs with the SMS. The DSL Opportunity. DSL is Different from Dial

... Digital Subscriber Line (DSL) services represent a major opportunity for dialup-based Internet Service Providers (ISPs) to improve their competitive position by offering broadband connectivity to ...

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Predicting Total Harmonic Distortion (THD) in Asymmetric Digital Subscriber Line (ADSL) Transformers using Simulation

Predicting Total Harmonic Distortion (THD) in Asymmetric Digital Subscriber Line (ADSL) Transformers using Simulation

... ADSL modems are modulated using some form of QAM, with an interface between the modem hybrid and the line of a 1 : 1 line transformer, as shown in ...

8

Digital Subscriber Line Access Multiplexer

Digital Subscriber Line Access Multiplexer

... Figure 3 illustrates CO equipment configuration. CO equipment comprises a cluster of xDSL modems integrated with data concentration/access MUX equipment. xDSL modems provide high-speed DSL connectivity ...

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BRINGING BROADBAND OVER THE LAST MILE

BRINGING BROADBAND OVER THE LAST MILE

... rack-mount modems called DSL Access Multiplexers (DSLAM) have multi-port ADSL cards and multiplex the signals to a fatter ATM or Frame Relay ...ADSL line cards in Digital Loop Carriers (DLC) or ...

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Alien Crosstalk Cancellation for Multipair Digital Subscriber Line Systems

Alien Crosstalk Cancellation for Multipair Digital Subscriber Line Systems

... trix H i c is N × (N + ν) and represents the convolution ma- trix corresponding to the channel of pair i. The matrix A c i,k is N × (N + ξ) and represents the convolution matrix of the crosstalk coupling channel from ...

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GLOSSARY. access channel. ACD (automatic call distribution) ADSL (Asymmetric Digital Subscriber Line) ARPL (average revenue per line)

GLOSSARY. access channel. ACD (automatic call distribution) ADSL (Asymmetric Digital Subscriber Line) ARPL (average revenue per line)

... interconnect personal computers, workstations, minicomputers, file servers and other computing devices within a localised environment, for the purpose of sharing files, programs and various devices such as printers and ...

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Broadband Access Networks and the Emergence of Voice over IP (VoIP): an Economic Analysis for Cable and ADSL

Broadband Access Networks and the Emergence of Voice over IP (VoIP): an Economic Analysis for Cable and ADSL

... ADSL line is terminated at a Remote ADSL Transceiver Unit (ATU-R) on the customer premise side and at a Central Office Transceiver Unit (ATU-Cs) on the network ...ADSL modems may also include higher level ...

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The lifetime value of a Land Line Phone Subscriber

The lifetime value of a Land Line Phone Subscriber

... In the table above ARPU (average revenue per unit) stands for average monthly revenue. In this case, the unit is the customer. Some customers have more than one line. Some make a lot of long distance calls. Some ...

6

Digital Subscriber Line (DSL) Testing

Digital Subscriber Line (DSL) Testing

... In short, the key to success is flexibility. When it comes to a DSL test plan, one size does not fit all. All three components discussed in this tutorial will evolve over time and improve. Tests will become more ...

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Go Back. What is ADSL??? Tutorial. Twisted Pair Access to the Information Highway

Go Back. What is ADSL??? Tutorial. Twisted Pair Access to the Information Highway

... feed Digital Loop Carrier (DLC) systems that concentrate 24 or 30 voice lines over two twisted pair lines from a central office, thereby saving copper lines and reducing the distance between an access point and ...

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Video Service Solutions: Delivering Video over DSL

Video Service Solutions: Delivering Video over DSL

... Digital TV is the basic building block and enabler of all these services. Digital TV (DTV) derives from earlier work with High Definition TV (HDTV). HDTV uses a screen ratio of 16:9 instead of the ...

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Paper Summary of NGN Migration Strategies

Paper Summary of NGN Migration Strategies

... deploying digital exchanges, employing a hybrid network migration strat- ...existing digital cir- cuit switches, it will deploy an NGN architecture with cen- tralized softswitch control and distributed ...

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Time Synchronization for Digital Subscriber Lines

Time Synchronization for Digital Subscriber Lines

...  At the VTU-R, a time stamp is taken on the upstream reference sample at time instant t 3 when this reference sample, being transmitted to the VTU-O, arrives at the U-R reference po[r] ...

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CMC ICT3207 Call Flow

CMC ICT3207 Call Flow

... access to a variety of networks, such as packet-switched networks and circuit-switched networks. To meet these needs, the telephone companies created Integrated Digital Networks (IDNs). An IDN is a combination of ...

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Appendix C. Glossary of Broadband Terms

Appendix C. Glossary of Broadband Terms

... • Upstream – Data flowing from your computer to the Internet (sending E-mail, uploading a file). • VDSL – Very High Data Rate Digital Subscriber Line: A developing technology that em[r] ...

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Cosine-Modulated Multitone for Very-High-Speed Digital Subscriber Lines

Cosine-Modulated Multitone for Very-High-Speed Digital Subscriber Lines

... Figure 5 presents plots that compare the bit rates of z- DMT, CMT, and FMT on TP1 lines of different lengths. Also shown in this figure are the results of an ideal system where a bank of ideal filters with zero transition ...

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Potential Liability under the Illinois Electronic Commerce Security Act: Is It a Risk Worth Taking?, 17 J. Marshall J. Computer & Info. L. 909 (1999)

Potential Liability under the Illinois Electronic Commerce Security Act: Is It a Risk Worth Taking?, 17 J. Marshall J. Computer & Info. L. 909 (1999)

... each time it is created. The digital signature process consists of a subscriber, a recipient, and the certification authority. A certification authority issues the keys [r] ...

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Release 4.3: SuperStack 3 NBX NBX 100

Release 4.3: SuperStack 3 NBX NBX 100

... Digital Line Card Provisioning – T1 DS1 and T1 ISDN PRI 9 Digital Line Card Provisioning – E1 ISDN PRI and ISDN BRI-ST 11 Digital Lines 12 Digital Line Spans 14 Digital Line Groups 16 C[r] ...

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Performance Of VoIP In Wireless Multi-Hop Network

Performance Of VoIP In Wireless Multi-Hop Network

... VoIP services convert your voice into a digital signal that travels over the Internet. If you are calling a regular phone number, the signal is converted to a regular telephone signal before it reaches the ...

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