Troubleshooting Guide 46 Document #: LTRT-57601
MediaPack, Mediant 1000, Mediant 2000
6.3 How Do I Troubleshoot Voice Delay
Delay is when each component in the path (such as sender, network, and receiver) adds
delay. ITU-T G.114 recommends 150 msec as maximum desired latency to achieve high
voice quality.
Jitter-Variable delay is caused when voice packets suffer different transit delays, causing
variation in arrival times at the receiver. It is calculated based on inter-arrival time of
successive packets and minimized by buffering voice at the receiver for a period longer
than expected delay variation.
Table 6-3: Voice Delay Troubleshooting
Possible Cause Solution
1.
A high round-trip time when
pinging the remote UA.
Verify that that round trip time for pinging the remote UA is
less than 350 msec. Refer to ''How Do I Ping a Network
Entity from the Device'' on page 10.
2.
Delay caused by network
condition.
Verify your network condition, by contacting your network
administrator.
3.
None of the above. If all the above is functioning properly, contact AudioCodes
Technical Support team.
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