HP Survivable Branch Communication zl Module powered by Microsoft Lync Planning and Design Guide 2011-02

4-98
Example Solutions
Test Results
Summary
The testing here shows that the audio quality of the Lync environment is
excellent even under periods of heavy packet loss and high latencies. Twenty-
five percent packet loss is beyond any real world scenario, but the audio
quality is still scoring satisfactory MOS scores of at least 3.0, and most often
excellent scores of at least 4.0.
New York to Dallas 80% pipe full 55 ms
latency each way
25% packet loss
• Soft client to soft client
• Soft client to IP phone client
• IP phone client to IP phone
client
•1
•1
•1
•4.2
•3.8
•3.75
Video
Main site (Sacramento) to
New York
80% pipe full 75 ms
latency each way
5% packet loss
VGA video quality 2 4.12
Seattle to New York 80% pipe full 85 ms
latency each way
5% packet loss
VGA video quality 2 4.13
Branch Network Condition Scenarios Average Jitter
Lync
Average NMOS
OCS 14