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ALSO CALLED: Quality of Service, Q O S
DEFINITION: Packet loss is the failure of one or more transmitted packets to arrive at their destination. This event can cause noticeable effects in all types of digital communications. The effects of packet loss:In text and data, packet loss produces errors. In videoconference environments it can create jitter. In pure audio communications, such as VoIP, it can cause jitter and frequent gaps in received speech.  … 
Definition continues below.
QOS Reports
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Converged Network Infrastructure: Evaluation of Resilience, Performance & Quality of Enterprise Infrastructure for Voice, Data and Video Services
sponsored by Nortel Networks Corporation
WHITE PAPER: Converged services are being deployed extensively in enterprises to take advantage of the advances in IP-based voice, data and video service offerings.
Posted: 19 Oct 2006 | Published: 01 Sep 2006

Nortel Networks Corporation

Assuring Quality of Experience for IPTV
sponsored by Alcatel
WHITE PAPER: This white paper identifies the key challenges and solution approaches for service control and assurance. Learn how industry-leading vendors are addressing these issues in relation to IPTV.
Posted: 16 Oct 2006 | Published: 16 Oct 2006

Alcatel

Alcatel 1850 TSS-320: Transport Service Switch | Release 1
sponsored by Alcatel
DATA SHEET: The Alcatel 1850 TSS-320 is a new breed of multiservice transport platform that is able to support mixed traffic, from 100 percent circuits to 100 percent packets, up to a maximum of 320 Gb/s.
Posted: 07 Jul 2006 | Published: 01 Jul 2005

Alcatel

Alcatel 7750 Service Router
sponsored by Alcatel
PRODUCT LITERATURE: The Alcatel 7750 Service Router (SR) is the industry's first service router designed and optimized for the delivery of high-performance carrier data, voice and video services.
Posted: 07 Jul 2006 | Published: 01 Feb 2005

Alcatel

Interconnecting the Intelligent EDGE
sponsored by Hewlett-Packard Company
WHITE PAPER: This paper will explore the changing networking environment and how this new design approach helps organizations improve business and technology performance while minimizing investment risk.
Posted: 06 Feb 2006 | Published: 01 Jan 2005

Hewlett-Packard Company

Cutting Through the Complexity of Multi-Protocol Label Switching (MPLS) Performance
sponsored by NetScout Systems, Inc.
WHITE PAPER: This paper outlines the best practices for collecting network and application performance information over MPLS enabled wide area networks by using the nGenius Solution's Site Monitoring feature to monitor traffic flows destined for remote sites.
Posted: 16 Jan 2006 | Published: 01 Jan 2005

NetScout Systems, Inc.

Sage Instruments' Voice Quality Tests for Next Generation Packet Voice Networks
sponsored by Sage Instruments Inc.
BROCHURE: Sage Instruments provides a suite of voice quality tests to address the QoS challenge for Next generation networks.
Posted: 22 May 2002 | Published: 01 May 2002

Sage Instruments Inc.
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QOS DEFINITION (continued): … Packet loss is the failure of one or more transmitted packets to arrive at their destination. This event can cause noticeable effects in all types of digital communications. The effects of packet loss:In text and data, packet loss produces errors. In videoconference environments it can create jitter. In pure audio communications, such as VoIP, it can cause jitter and frequent gaps in received speech. In the worst cases, packet loss can cause severe mutilation of received data, broken-up images, unintelligible speech or even the complete absence of a received signal.The causes of packet loss include inadequate signal strength at the destination, natural or human-made interference, excessive system noise, hardware failure, software corruption or overburdened network nodes. Often more than one of these factors is involved.In a case where the cause can not be remedied, packet loss concealment may be used to minimize the effects of lost packets.
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