For many, the acronym conjures up visions of 100s of on-demand entertainment channels delivered anytime, anywhere. It promises total control by the user to customize their multimedia experience for true interactive unicasting. And for many operators, IPTV holds the allure of tapping into new revenue sources with the delivery of advanced multimedia services over broadband networks.
IPTV is being enabled by the transition from analog to digital video. Advances in video compression technologies are making it easier to deliver both standard- and high-definition audio and video.
Ngày nay cách sử dụng video và âm thanh streaming sống trong doanh nghiệp phổ biến là qua hội thảo video. Hội thảo video qua mạng internet là một công nghệ hấp dẫn. Các ứng dụng là vô tận, từ học từ xa, phối hợp đào tạo và marketing cho đến các cuộc gọi videophone đường dài đến bất kỳ nơi nào trên thế giới.
Ví dụ: Akamai, một công ty hội thảo video cung cấp một loạt các dịch vụ hội thảo video www.akamai.com .
Nermeen Ismail provided a cover-to-cover review of the book, lending considerable expertise in
video and voice over IP.
Jesse Herrera also provided a full review, verifying all parts of the text in minute detail.
The authors are particularly grateful to Stuart Taylor for providing a number of suggestions and
comments on the introduction and architecture chapters; to Tripti Agarwal for taking time to
review the H.
This preface describes the purpose, intended audience, organization, and conventions
for the Cisco IP Telephony Network Design Guide. This document serves as an implementation guide for Cisco AVVID (Architecture
for Voice, Video and Integrated Data) networks based on Cisco CallManager
Release 3.0(5). With such a high level of industry interest regarding IP telephony,
customers are aggressively pursuing Cisco solutions for both large and small
networks. Solutions based on Cisco CallManager Release 3.0(5) allow Cisco to
deliver large-scale IP telephony systems with many capabilities....
This Solution Reference Network Design (SRND) publication is intended to provide a set of guidelines
for designing, implementing, and deploying Voice and Video Enabled IPSec VPN (V3
This SRND defines the comprehensive functional components required to build a Site-to-Site Enterprise
Virtual Private Network (VPN) solution that can transport IP telephony and video.
This preface describes the purpose, scope, intended audience, and general organization of this Cisco IP
Videoconferencing Solution Reference Network Design Guide. It also provides information on how to
order documentation from Cisco Systems. This document provides guidelines, recommendations, and best practices to help you design an
IP videoconferencing solution for your enterprise using the Cisco Architecture for Voice, Video, and
Integrated Data (AVVID).
This document provides design considerations and guidelines for implementing Cisco IP Telephony
solutions based on the Cisco Architecture for Voice, Video, and Integrated Data (AVVID).
This document is primarily an update of the design guidelines and information presented in the Cisco IP
Telephony Solution Reference Network Design (SRND) for Cisco CallManager releases 3.1 and 3.2,
which is available online at
This document assumes that you are already familiar with the terms and concepts presented in previous
versions of the Cisco IP Telephony SRND.
Chuyển đổi các trình diễn Powerpoint thành video
Đã bao giờ bạn có ý định muốn chuyển các trình diễn Powerpoint thành các file video chưa? Khi đó máy tính nơi bạn muốn trình bày trình diễn của mình sẽ không bắt buộc cần cài đặt phần mềm văn phòng để mở các file trình diễn Powerpoint, hoặc một ưu điểm nữa là bạn có thể xem trình diễn qua tivi.
AVVID (Architecture for Voice, Video, and Integrated Data), the latest development from Cisco Systems is redefining the way businesses communicate. AVVID allows businesses to transmit voice, data, and video over a single integrated architecture, whereas in the past three separate systems were required.
Administering Cisco AVVID Applications is a professional reference detailing the strategies, tactics, and methods for utilizing Cisco software to configure and maintain Cisco networks and hardware infrastructures.
Video surveillance has been a key component of many organizations’ safety and security groups for decades. As an application, video surveillance has demonstrated its value and benefits countless times by:
Providing real-time monitoring of a facility's environment, people, and assets.
Recording the movements inside and outside a facility's environment for delayed viewing.
Many traditional video surveillance deployments are purely analog and have not yet been able to benefit from a converged network approach.
Voice chat, video chat khi điều khiển máy tính từ xa
Không chỉ cải thiện đáng kể về tốc độ làm việc, phiên bản mới 5.0 Beta của TeamViewer, trình điều khiển máy tính từ xa qua Internet, còn thêm một số tính năng mới đáng giá, nổi bật là voice chat và video chat.
Từ giờ mỗi khi dùng TeamViewer 5.
The demand for higher bandwidth by residential customers has led carriers to one
simple conclusion – optical fiber with its almost limitless bandwidth capability will
be a network necessity. The driver for such high consumer bandwidth usage is the
need for carriers to deliver video, along with voice and data services, to complete
the “triple play” package.
As traditional carriers experience declining revenue from voice services, they must
find ways to increase the revenue from data and video services.
In multimedia communications, compressed video streams need to be transmitted over networks that have inconsistent and time-varying bandwidth requirements. To make the best use of available network resources at any time and guarantee a maximum level of perceptual video quality from the end-user’s perspective, a certain ﬂow control mechanism must be introduced into the video communication system (Cote et al., 1998; Wang, 2000).
This book is now in its fifth edition. Each edition has corresponded to a different
phase in the way computer networks were used. When the first edition appeared
in 1980, networks were an academic curiosity. When the second edition
appeared in 1988, networks were used by universities and large businesses. When
the third edition appeared in 1996, computer networks, especially the Internet, had
become a daily reality for millions of people. By the fourth edition, in 2003, wireless
networks and mobile computers had become commonplace for accessing the
Web and the Internet.
The growth in the use of mobile networks has come mainly with the third generation
systems and voice traffic. With the current third generation and the arrival of the 4G, the
number of mobile users in the world will exceed the number of landlines users. Audio
and video streaming have had a significant increase, parallel to the requirements of
bandwidth and quality of service demanded by those applications. Mobile networks
require that the applications and protocols that have worked successfully in fixed
networks can be used with the same level of quality in mobile scenarios....
This document provides design recommendations, configuration examples, and scalability test results for implementing a next-generation WAN for Voice and Video Enabled IPsec VPN (V3PN) based on a service provider WAN interface handoff using Ethernet at the enterprise campus and branch locations. This document provides the enterprise network manager with configuration and performance guidance to successfully implement or migrate to a WAN architecture using Ethernet as an access technology to a service provider network....
This chapter provides an overview of the components that are used in a Cisco® Stream Manager
Video Surveillance solution. These components are discussed in more detail throughout this
Solutions Reference Network Design (SRND) Guide.
Video surveillance is a key component of the safety and security of many organizations, providing
real-time monitoring of the environment, people and assets, and providing recording for
investigation purposes. Benefits of Cisco’s Video Surveillance solution include:...
Compressed video streams are intended for transmission over communication networks. With the advance of multimedia systems technology and wireless mobile communications, there has been a growing need for the support of multimedia services such as mobile teleconferencing, telemedicine, mobile TV, distance learning, etc., using mobile multimedia technologies. These services require the real time transmission of video data over ﬁxed and mobile networks of varying bandwidth and error rate characteristics....
The near future will witness the universal deployment of the third-generation mobile access networks that are expected to revolutionise the world of telecommunications. In addition to conventional voice communication services provided by the second-generation GSM networks, the third-generation mobile networks will support a greatly enhanced range of services due to the higher throughput made available by embracing a number of new access technologies. These include TDMA and a variety of CDMA radio access families such as the direct sequence Wideband-CDMA (WCDMA) and multi-carrier CDMA....