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Polycom’s Lost Packet Recovery (LPR) Capability
from Polycom

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Research Report

Description:
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 protects IP video calls from the impact of packet loss by temporarily allocating a small portion of the call bandwidth to be used for forward error correction (FEC). The details of the evaluation is covered in this report.
Even a small amount of network error / packet loss can have a dramatic impact on the user experience during an IP video call. For this reason, the ability to host successful video calls over “lossy” IP networks has been a challenge since the emergence of IP videoconferencing in the mid- to late-1990s.

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