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Chapter 9 Troubleshooting and Maintenance
General Troubleshooting Tips
9-18
Cisco Unified IP Phone 7970G/7971G-GE for Cisco Unified Communications Manager 6.0
OL-12232-01
Codec mismatch between
the phone and another
device
The RxType and the TxType statistics show the
codec that is being used for a conversation between
this Cisco Unified IP phone and the other device.
The values of these statistics should match. If they
do not, verify that the other device can handle the
codec conversation or that a transcoder is in place to
handle the service.
See the “Call Statistics Screen” section on page 7-18
for information about displaying these statistics.
Sound sample mismatch
between the phone and
another device
The RxSize and the TxSize statistics show the size of
the voice packets that are being used in a
conversation between this Cisco Unified IP phone
and the other device. The values of these statistics
should match.
See the “Call Statistics Screen” section on page 7-18
for information about displaying these statistics.
Gaps in voice calls Check the AvgJtr and the MaxJtr statistics. A large
variance between these statistics might indicate a
problem with jitter on the network or periodic high
rates of network activity.
See the “Call Statistics Screen” section on page 7-18
for information about displaying these statistics.
Table 9-2 Cisco Unified IP Phone Troubleshooting (continued)
Summary Explanation
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