Xem 1-20 trên 219 kết quả Voice networks
  • Whether a terrorist attack, fibre cut, security breach, natural disaster or traffic overload, today's networks must be designed to withstand adverse conditions and provide continuous service. This comprehensive, leading-edge book reveals the techniques and strategies to help you keep enterprise data and voice networks in service under critical circumstances. You learn numerous ways to minimize single points of failure through redundancy and backups, and discover how to select the right networking technologies to improve survivability and performance....

    pdf433p ken333 06-07-2012 43 8   Download

  • CHALLENGE A major U.S. regional carrier needs to create a high-speed data network using its existing voice infrastructure in more than 300 metropolitan and rural markets. Without this service upgrade, the carrier stands to lose significant high-value business and residential customers to new providers of high-speed services in many of its key markets. STRATEGY Design and deploy a DSLAM solution rapidly and efficiently while maintaining the highest standards of quality with each deployment.

    pdf4p thuyvan 13-08-2009 93 13   Download

  • The BACnet protocol currently uses the connectionless User Datagram Protocol (UDP) for both Annex H and BACnet/IP communications. However, it is possible that Trans- mission Control Protocol (TCP) transport will be utilized for some service in the future, and so threats specific to TCP have been included. Even if TCP/IP is never used as part of the BACnet protocol, it still can be used to gain access to the building control system web servers, get access through the corporate firewall, and be used for denial of service attacks on the external network on which the BCS may depend.

    pdf14p khongmuonnghe 04-01-2013 34 2   Download

  • The merging of voice and data on a single network opens powerful new possibilities in communications. Only a fundamental understanding of both technologies will ensure you are equipped to maximise their full potential. Convergence Technologies for 3G Networks describes the evolution from cellular to a converged network that integrates traditional telecommunications and the technology of the Internet.

    pdf673p dieutan 17-05-2010 161 80   Download

  • James F. Kurose and Keith W. Ross Preface Link to the Addison-Wesley WWW site for this book Link to overheads for this book Online Forum Discussion About This Book - with Voice! 1. Computer Networks and the Internet 1. What is the Internet? 2. What is a Protocol? 3. The Network Edge 4. The Network Core s Interactive Programs for Tracing Routes in the Internet s Java Applet: Message Switching and Packet Switching 5. Access Networks and Physical Media 6. Delay and Loss in Packet-Switched Networks 7. Protocol Layers and Their Service Models 8. Internet Backbones, NAPs and ISPs 9....

    pdf679p kityco 11-12-2010 237 66   Download

  • This chapter shows you how to configure Voice over IP (VoIP) on the Cisco 3600 series. For a deion of the commands used to configure Voice over IP, refer to the “Voice-Related Commands” chapter in the Voice, Video, and Home Applications Command Reference. VoIP enables a Cisco 3600 series router to carry voice traffic (for example, telephone calls and faxes) over an IP network.

    pdf36p quocminh 02-03-2009 220 63   Download

  • The possibility of voice communications traveling over the Internet, rather than the PSTN, first became a reality in February 1995 when Vocaltec, Inc. introduced Web ProForum Tutorials http://www.iec.org Copyright © The International Engineering Consortium 2/16 its Internet Phone software. Designed to run on a 486/33-MHz (or higher) personal computer (PC) equipped with a sound card, speakers, microphone, and modem (see Figure 1), the software compresses the voice signal and translates it into IP packets for transmission over the Internet.

    pdf16p thuyvan 12-08-2009 162 61   Download

  • 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.

    pdf397p dieutan 17-05-2010 97 55   Download

  • 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....

    pdf262p phongthinh 07-08-2009 126 52   Download

  • Trong bài này, chúng tôi sẽ giới thiệu cho các bạn cách cài đặt và thiết lập một chức năng thư tín hợp nhất, cách cấu hình Outlook Voice Access và kiểm tra cấu hình bằng Microsoft Testphone Tool có trong Exchange Server 2007.

    pdf11p nhan321 23-10-2009 87 50   Download

  • This document provides system-level best practices and design guidance for the Cisco Unified Contact Center Express (Unified CCX), Release 6.0. With proper planning, design, and implementation, Unified CCX provides a reliable and flexible voice processing and contact center solution for the enterprise. This design guide is intended for the system architects, designers, engineers, and Cisco channel partners who want to apply best design practices for Unified CCX.

    pdf104p batrinh 11-08-2009 153 45   Download

  • 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 PN) solutions. 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.

    pdf160p duypha 11-08-2009 167 45   Download

  • Tìm hiểu về Voice over Internet Protocol (VoIP) - 30/1/2007 10h:13 Với giới thiệu này về VoIP chắc các bạn có thể sử dụng Internet để thực hiện các cuộc gọi thay vì trước đây chỉ dựa vào điện

    doc2p mrngodat 19-03-2010 130 40   Download

  • 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).

    pdf114p kieuoanh 11-08-2009 136 34   Download

  • 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 http://cisco.com/go/srnd This document assumes that you are already familiar with the terms and concepts presented in previous versions of the Cisco IP Telephony SRND.

    pdf220p kieuoanh 11-08-2009 114 34   Download

  • 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.

    pdf70p hoa_thuyvu 17-10-2011 76 30   Download

  • Your organization wants to call from one location to another via your private leased line, which is passing only IP traffic. Because of this, you decide that a VoIP solution is the best way to do go about providing communication between the two offices. As Network Administrator, you note that each site is using a Cisco 2610. You also find that there is room to put an FXS port on each of them. To make calling easy for the users, create a simple dialing plan. For the phone attached to Router A, dial 1001, and for the phone attached to Router B, dial 1002....

    pdf1p trungha 28-08-2009 119 25   Download

  • 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.

    pdf8p alone 20-07-2010 63 23   Download

  • 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.

    pdf4p halanh 14-08-2009 157 21   Download

  • Tham khảo tài liệu 'tài liệu công nghệ voice over internet protocol (voip): chất lượng dịch vụ cho voip', công nghệ thông tin, quản trị mạng phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

    pdf9p abcdef_37 10-10-2011 53 15   Download

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