Summary
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In Q4 2007, Polycom asked Wainhouse Research (WR) to evaluate the performance of its newly released LPR (or Lost Packet Recovery) feature; an algorithm available on Polycom’s HDX video systems. LPR is designed to protect IP video calls from the impact of packet loss.
As a part of this effort, WR researched and analyzed the methods used by currently available videoconferencing systems to conceal the effect of network errors. In addition, WR set up a number of video systems in our Atlanta test lab, placed a series of test calls including varying levels of packet loss, and observed the results. This allowed WR to assess each system’s ability to protect video calls from packet loss in a variety of conditions.
After placing several hundred test calls between various systems, WR has concluded that LPR’s ability to protect the video call experience from the effects of packet loss – especially random / bursty packet loss - is exceptional. |
This document, sponsored by
Polycom, provides detailed information about the testing methodology and results of this evaluation.
This is the Portuguese version of this evaluation report.
For the original English version of this document please
click here.
For the Chinese version of this document please
click here.
For the Japanese version of this document please
click here.
For the Spanish version of this document please
click here.
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