350-801 CLCOR: Implementing and Operating Cisco Collaboration Core TechnologiesDemo

Question

What are the maximum one-way packet-loss and jitter levels for voice before quality problems occur?

A < 10 percent packet loss and < 10 ms jitter
B < 1 percent packet loss and < 30 ms jitter
C < 3 percent packet loss and < 60 ms jitter
D < 9 percent packet loss and < 30 ms jitter

Explanation

High-quality VoIP service should keep packet loss below 1% and one-way jitter below 30 ms; higher loss causes audible clipping or skips, while excessive jitter can exceed the receiving jitter buffer and cause audio dropouts.

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Cisco IP Service Level Agreement

350-801 CLCOR: Implementing and Operating Cisco Collaboration Core TechnologiesDemo

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Notes

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