Migration to IP Telephony

2011 ◽  
pp. 593-600
Author(s):  
Khaled A. Shuaib
Keyword(s):  
Information Exchange ◽  
Communication Systems ◽  
World Wide ◽  
Packet Switching ◽  
Computer Network ◽  
Internet Protocol ◽  
Transmission Mechanism ◽  
The Other ◽  
The Internet ◽  
Switched Networks

There are mainly two types of used communication systems; circuit switched and packet switched networks. In circuit switched networks, there must be a dedicated path and a sequence of connected links between the calling and called stations. A connection with the proper resources has to be established prior to the start of information exchange. An example of circuit switched network is the phone network. On the other hand, packet switched networks rely on allowing multiple communicating end systems to share the entire or part of a path simultaneously. The Internet, a world wide computer network, is based on the concept of packet switching empowered by the Internet Protocol (IP). IP is basically a transmission mechanism used by devices communicating in a network as part of a protocol suite.

Adaptive Playout Buffering Schemes for IP Voice Communication

2011 ◽  
pp. 30-36
Author(s):  
Stefano Ferretti ◽  
Marco Roccetti ◽  
Claudio E. Palazzi
Keyword(s):  
Communication Systems ◽  
Multimedia Systems ◽  
The Internet ◽  
Voice Communication ◽  
Switched Networks ◽  
Research Areas ◽  
Internet Users ◽  
Audio Communication ◽  
Voice Data ◽  
The Voice

Audio communication over IP-based networks represents one of the most interesting research areas in the field of distributed multimedia systems. Today, routing the voice over Internet enables cheaper communication services than those deployed over traditional circuit-switched networks. BoAT (Roccetti, Ghini, Pau, Salomoni, & Bonfigli, 2001a), Ekiga, FreePhone (Bolot & Vega Garcia, 1996), iCall, Kiax, NeVot (Schulzrinne, 1992), rat (Hardman, Sasse, & Kouvelas, 1998), Skype, Tapioca, vat (Jacobson & McCanne, n.d.), WengoPhone, and YATE, are just few examples of free VoIP software available to Internet users. Without any doubts, new (wired and wireless) highspeed, broadband networks facilitate the transmission of the voice over the Internet and have determined the success of these applications. However, the best effort service offered by the Internet architecture does not provide any guarantee on the delivery of (voice) data packets. Thus, to maintain a correct time consistency of the transmitted audio stream, these voice communication systems must be equipped with schemes able to deal with the unpredictability of network latency, delay jitter, and possible packet loss.

Standardization Strategies in Practice - Examples from Healthcare

2011 ◽  
pp. 46-65
Author(s):  
Nina Lundberg ◽  
Ole Hanseth
Keyword(s):  
Communication Systems ◽  
Computer Systems ◽  
The Other ◽  
The Internet ◽  
Dicom Standard ◽  
Image Communication ◽  
Healthcare It ◽  
Picture Archiving ◽  
Communication Work ◽  
Picture Archiving And Communication

This chapter explores some of the consequences of strategies used to develop electronic standards in healthcare, especially the consequences of electronic standards for communication work. The two standardization strategies explored are the prototype strategy used to develop intranet applications and the specification strategy used to develop Picture Archiving and Communication Systems (PACS) in healthcare. It was found that computer systems based on different electronic standards intervene in work in different ways, and that they do not always intervene in the ways they were initially intended. For example, the PACS based on the DICOM standard have primarily attained a local role, although its initial aim was to support universal image communication within healthcare. On the other hand the intranet application based on the Internet standards primarily not designed for this particular purpose has come to support communication of images and reports within the heterogeneous hospital network.

The Telemedicine Information Exchange (TIE)

1996 ◽  
Vol 2 (1) ◽  
pp. 20-27 ◽  
Author(s):  
Tamara Hayes ◽  
Audrey Kinsella ◽  
Nancy A Brown ◽  
Douglas A Perednia
Keyword(s):  
Information Exchange ◽  
World Wide ◽  
Information Service ◽  
Information Storage ◽  
The Internet ◽  
Electronic Information ◽  
Research Activities ◽  
The World ◽  
On Line ◽  
Funding Research

An on-line information service, the Telemedicine Information Exchange TIE , was established to provide a comprehensive source of telemedicine information. The TIE comprised a number of frequently updated, searchable, linked databases, each dealing with an important aspect of telemedicine. These included an extensive bibliography on telemedicine consisting of more than 2000 citations, many with abstracts. There was also a series of topical sections describing current telemedicine projects, products and services, legislation, funding, research activities, and news in the field. The TIE was designed to exploit the features of electronic information storage: hypertext linking between related pieces of information; specialized views technical, legal, and business of the bibliographic database; and usage monitoring to determine which data were most frequently accessed and therefore where any enhancement should be done. The TIE was made available via the World Wide Web, by remote telnet access over the Internet, and via modem. The rapid increase in the usage of the TIE since its introduction in April 1995 indicated that the TIE satisfied a need in the telemedicine community.

XML-Based Transit Timetable System

2002 ◽  
Vol 1804 (1) ◽  
pp. 151-161
Author(s):  
Wu Sun ◽  
David Bernstein
Keyword(s):  
Information Exchange ◽  
World Wide ◽  
The Internet ◽  
Markup Language ◽  
Administration System ◽  
Dynamic Content ◽  
Java Server Pages ◽  
The World ◽  
Transportation Applications ◽  
The Web

The Internet and the World Wide Web are used for a wide variety of transportation applications. Most of these applications use static HTML documents. However, outside of transportation, considerably more attention is being given to dynamic content and XML. A way in which these technologies can be used to provide transit timetable information on the web is explored. Specifically, the transit timetable system, an online interactive transit timetable information exchange and administration system that uses Java server pages and the transit timetable markup language, is described.

scholarly journals Research on College English Multimedia Teaching Model Driven by Wireless Communication Network Environment

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Xinguo Li ◽  
Hua Zhang
Keyword(s):  
Information Exchange ◽  
Computer Network ◽  
The Internet ◽  
Computer Assisted ◽  
Training Environment ◽  
Teaching System ◽  
Network Teaching ◽  
English Teaching ◽  
Network Education ◽  
Multimedia Teaching

English teaching has also gradually introduced computer network-assisted teaching methods. Compared with other subjects, English teaching has many constraints, including lower teacher-student interaction time, lack of English speaking training environment, single learning method, and other problems leading to the phenomenon that English teaching tends to emphasize theory but not practice. In terms of the current practical situation, the development and research of computer network multimedia courses are still far from meeting the actual needs of English network teaching. English network teaching mainly involves the transmission and use of video streams on the network, but the current video stream transmission conditions are not very ideal. Therefore, this paper focuses on the practical development of computer-assisted teaching in English teaching based on the browser/server (B/S) architecture mode of network multimedia teaching system, so that the teaching reform of English network courses can be further improved and developed. The research content of this paper is based on the development technology of the B/S mode, theoretical study and research on the production method of the English network teaching system, and practical evaluation and development application of this teaching system. A comparison of the educational effects of computer network education models and traditional education models is carried out to determine the implementation and effectiveness of web-based English multimedia education systems. Based on a web browser-based network education model, the Internet is used as a means of transmitting media education content with synchronised English and playback lessons as well as related online tests and online question and answer sessions on the Internet, enabling timely and efficient educational activities. The teaching system is also evaluated and applied. The research results show that the network multimedia teaching system provides a variety of forms of materials, making the original more abstract content a more vivid image and concrete. Changing the original traditional teaching mode of English makes students’ English learning change from simple memory to concrete understanding; increasing students’ initiative to information not only improves the utilization of time but also changes the monotonous information exchange from teachers to students, providing a large number of English environment materials, which is conducive to students’ oral practice and promotes the successful completion of teaching tasks.

scholarly journals Emerging Cyber Threats in Bangladesh: In Quest of Effective Legal Remedies

2014 ◽  
Vol 1 ◽  
pp. 112-124
Author(s):  
Ashiquddin Mohammad Maruf ◽  
Md Rabiul Islam ◽  
Bulbul Ahamed
Keyword(s):  
World Wide Web ◽  
Communication Systems ◽  
World Wide ◽  
The Internet ◽  
Human Beings ◽  
Cyber Threats ◽  
Sources Of Knowledge ◽  
Legal Remedies ◽  
History Of

With the advent of technology human beings are becoming exclusively dependant on automation and we can see its influence on all spheres of our life. The history of automation began when Babbage invented computer and especially a new horizon was opened before us with the invention of network particularly the Internet and World Wide Web (WWW). Internet has become the backbone of all kinds of communication systems and it is also one of the most important sources of knowledge in the present digitalized world. DOI: http://dx.doi.org/10.3329/nujl.v1i0.18529 Northern University Journal of Law Vol.1 2010: 112-124

Fractals, Computer Science and Beyond

2013 ◽  
pp. 268-291 ◽  
Author(s):  
Nicoletta Sala
Keyword(s):  
Virtual Reality ◽  
Computer Science ◽  
Virtual Worlds ◽  
Fractal Geometry ◽  
World Wide ◽  
Iterative Algorithms ◽  
The Self ◽  
The Other ◽  
The Internet ◽  
Self Similarity

In the modelling of the natural shapes (clouds, ferns, trees, shells, rivers, mountains), the limits imposed by Euclidean geometry can be exceeded by the fractals. Fractal geometry is relatively young (the first studies are the works by the French mathematicians Pierre Fatou (1878-1929) and Gaston Julia (1893-1978) at the beginning of the 20th century), but only with the mathematical power of computers has it become possible to realize connections between fractal geometry and the other disciplines. It is applied in various fields now, from the biology to the architecture. Important applications also appear in computer science, because the fractal geometry permits to compress the images; to reproduce, in the virtual reality environments, the complex patterns and the irregular forms present in nature using simple iterative algorithms execute by computers. Recent studies apply this geometry for controlling the traffic in the computer networks (LANs, MANs, WANs, and the Internet) and in the realization of virtual worlds based on World Wide Web. The aim of this chapter is to present fractal geometry, its properties (e.g., the self similarity), and their applications in computer science (starting from the computer graphics, to the virtual reality).

Online Communities and Social Networking

2011 ◽  
pp. 74-83
Author(s):  
Abhijit Roy
Keyword(s):  
Social Networking ◽  
Online Communities ◽  
World Wide ◽  
Social Bonds ◽  
The Other ◽  
Future Research ◽  
The Internet ◽  
Face To Face ◽  
The World ◽  
Definition Of

Technology has enabled communities to move beyond the physical face-to-face contacts to the online realm of the World Wide Web. With the advent of the highways in the 1950s and 1960s, “communities” were created in suburbia. The Internet, on the other hand, has over the last two decades, enabled the creation of a myriad of “online communities” (Green, 2007) that have limitless boundaries across every corner of the globe. This essay will begin by providing a definition of the term “online communities” and then describing several typologies of this phenomenon. The various motivations for joining communities, how marketers create social bonds that enhance social relationships, as well as strategies used by firms in building online communities are also discussed. We conclude by discussing strategies for managing online communities, leveraging them for social networking, researching them, as well as directions for future research.

Online Communities and Social Networking

2010 ◽  
pp. 45-54 ◽  
Author(s):  
Abhijit Roy
Keyword(s):  
Social Networking ◽  
Online Communities ◽  
World Wide ◽  
Social Bonds ◽  
The Other ◽  
Future Research ◽  
The Internet ◽  
Face To Face ◽  
The World ◽  
Definition Of

Technology has enabled communities to move beyond the physical face-to-face contacts to the online realm of the World Wide Web. With the advent of the highways in the 1950s and 1960s, “communities” were created in suburbia. The Internet, on the other hand, has over the last two decades, enabled the creation of a myriad of “online communities” (Green, 2007) that have limitless boundaries across every corner of the globe. This essay will begin by providing a definition of the term “online communities” and then describing several typologies of this phenomenon. The various motivations for joining communities, how marketers create social bonds that enhance social relationships, as well as strategies used by firms in building online communities are also discussed. We conclude by discussing strategies for managing online communities, leveraging them for social networking, researching them, as well as directions for future research.

Virtual Communities on the Internet

2011 ◽  
pp. 1040-1046
Author(s):  
Abhijit Roy
Keyword(s):  
World Wide Web ◽  
World Wide ◽  
Virtual Communities ◽  
The Other ◽  
The Internet ◽  
Face To Face ◽  
Other Hand ◽  
The World ◽  
The Creation ◽  
The 1950S

With the advent of the Internet a little over a decade ago, technology has enabled communities to move beyond the physical face-to-face contacts to the virtual realm of the World Wide Web. With the advent of highways in the 1950s and 1960s, communities were created in suburbia. The Internet, on the other hand, over the last fifteen years, has enabled the creation of a myriad of virtual communities that have limitless boundaries around the entire globe.

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