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VoIP QoS and Performance

  • Voice over IP Fundamentals

    "VoIP: An In-Depth Analysis," discusses some of the issues that both developers and users need to consider when working with VoIP.  Chapter Download

  • Top 10 VoIP tips of 2006

    Echo and latency issues top the list in 2006, as seen in our top 10 list of most popular tips. If you have missed any of these tips, now is the time to catch up before the end of the year.  Top 10 tips

  • Voice over IP Fundamentals: Chapter 9, 'Billing and Mediation Services'

    Voice over IP Fundamentals: Chapter 9, 'Billing and Mediation Services'  Chapter Download

  • Fast Guide: VoIP encryption

    Most enterprise organizations encrypt critical or sensitive data that transverses the public network. It's a no-brainer. Thus, encrypting voice and data packets transmitted over a VoIP network is also a given, right? Turns out, not so much. By and la...  Fast Guide

  • Planning for the IP call center

    Call centers are critical to business operations. Until recently, however, most enterprises have been dubious of VoIP quality, reliability and the soft benefits that make it so difficult to project and quantify ROI. Staying competitive demands higher...  Fast Guide

  • Practical VoIP Security: Chapter 1, 'Introduction to VoIP Security'

    The business of securing our private data is becoming more important and more relevant each day. Critical business systems can be compromised regularly and used for illegal purposes. As a result, the practice of information security has become more c...  Chapter Download

  • Power over Ethernet Crash Course

    Discover what Power over Ethernet is, how it works, and whether it's right for your network with these tips and resources.  Crash Course

  • Helping PoE reach its potential

    Power-over-Ethernet is helping bring to organizations and individuals to enjoy the benefits of a wired world. But with success comes greater responsibility. Now that the Power-over-Ethernet standard, or PoE, is so widely adopted—most networking equip...  Tech Article

  • Executive Guide: VoIP

    Many IT organizations are making the move to VoIP. But is VoIP right for every one? Check out the various resources in this month's Executive Guide to learn more about the costs, benefits, risks and conversion issues of moving to a VoIP system.  Executive Guides

  • The VoIP bloggers we read

    Over the course of the last year or so, VoIP blog sites have emerged as valuable and trusted resources for VoIP market trends and strategies. Often cited as sources similarly to industry analysts, some VoIP bloggers have managed to harness the power ...  Speaking of VoIP

  • See More: Essential Knowledge on VoIP QoS and Performance

  • IP telephony QoS: VoIP traffic management and prioritization

    When conventional solutions don't improve IP telephony QoS issues, VoIP traffic management can help. Learn how to prioritize VoIP traffic, address voice delay and provide Class of Service-based routing.  Tip

  • IP telephony QoS: Capacity planning and management

    Poor or irregular IP telephony QoS levels should alert voice managers to review network traffic, capacity, and traffic management measures before problems spread to all applications on the network.  Tip

  • VoIP service selection: MPLS, VPLS or Metro Ethernet?

    Creating secure, reliable VoIP connections over a multi-site enterprise network requires knowledge of your specific infrastructure. Multi-Protocol Label Switching (MPLS), Virtual Private LAN Service (VPLS) and Metropolitan Ethernet (Metro Ethernet) a...  Tip

  • Microsoft's Real-Time Codec (RTC) for VoIP optimization

    Microsoft's Real-Time Codec (RTC) delivers VoIP and unified communications services (UC) that are optimized in real time for available bandwidth.  Tip

  • IP phones get more innovative in 2008

    The IP phone hasn't kept up with the rest of the VoIP ecosystem. Expect 2008 to be the year the IP phone undergoes a facelift as vendors create more functionality in the phone, allowing users to create a more custom experience.  Tip

  • Voice quality and MOS

    Defining the nine elements of voice quality and Mean Opinion Score (MOS), the standard numeric value used to measure and report on voice quality.  Tip

  • Bringing QoS to end-user standards

    The phone call setup experience and perception of voice quality are the biggest factors contributing to the user's satisfaction. However, while the dialing experience can be objectively measured, the caller's judgment of voice quality is subjective. ...  Tip

  • Updating a QoS strategy for VoIP traffic

    Learn how to update your QoS strategy for VoIP traffic in this tip from Tom Lancaster.  Tip

  • VoIP/IP Telephony vendor security solutions

    VoIP and IP Telephony system vendors have been improving their security offerings, but are they good enough for your VoIP implementation? Learn about the various security solutions you can implement in your VoIP network to help protect you against at...  Tip

  • VoIP security -- Free IP telephony fuzzing tools

    Protect your organization's VoIP security with free VoIP security tools designed to test IP telephony vulnerability.  Tip

  • See More: Tips on VoIP QoS and Performance

  • VoIP (voice over IP)

    VoIP (voice over IP) is an IP telephony term for a set of facilities used to manage the delivery of voice information over the Internet. (Continued...)  Word

  • vishing (voice or VoIP phishing)

    Vishing is an electronic fraud tactic in which individuals are tricked into revealing critical financial or personal information to unauthorized entities... (Continued)  Word

  • mean opinion score (MOS)

    In voice communications, particularly Internet telephony, the mean opinion score (MOS) provides a numerical measure of the quality of human speech at the destination end of the circuit.  Word

  • QoS (Quality of Service)

    On the Internet and in other networks, QoS (Quality of Service) is the idea that transmission rates, error rates, and other characteristics can be measured, improved, and, to some extent, guaranteed in advance.  Word

  • Power over Ethernet podcast

    This podcast discusses the emergence of Power over Ethernet and its many benefits to enterprise networks. Is the technology ready yet for mainstream adoption? Is it ready yet for your network? Let's find out…  Podcast

About VoIP QoS and Performance

Ensuring VoIP QoS (quality of service) is vital to IP telephony networks. Learn how to optimize VoIP performance and ensure users are experiencing the call quality they expect. This section covers common voice over IP problems like VoIP packet loss, jitter, latency and echo, and VoIP management best practices to minimize or eliminate them. It also explains how to accurately calculate bandwidth requirements for VoIP and implement QoS mechanisms for prioritizing voice traffic on the enterprise network.