Where To Go For More Troubleshooting Information - Cisco 7906G Administration Manual

Chapter 9 Troubleshooting and Maintenance
Note

Where to Go for More Troubleshooting Information

Cisco Unified IP Phone 7906G and 7911G Administration Guide for Cisco Unified CallManager 5.1
OL-11515-01
Table 9-4 Changes to Voice Quality Metrics (continued)
Metric Change
Conceal Ratio and Conceal
Seconds increase significantly
Conceal Ratio is near or at zero,
but the voice quality is poor.
Voice quality metrics do not account for noise or distortion, only frame loss.
If you have additional questions about troubleshooting the
Cisco Unified IP Phones, several Cisco.com web sites can provide you with more
tips.
Cisco Unified IP Phone Troubleshooting Resources:
•
http://www.cisco.com/en/US/products/hw/phones/ps379/tsd_products_
support_series_home.html
Cisco Products and Services (Technical Support and Documentation):
•
http://www.cisco.com/en/US/products/sw/voicesw/tsd_products_support_
category_home.html
Where to Go for More Troubleshooting Information
Condition
Network impairment from packet
•
loss or high jitter.
Noise or distortion in the audio
•
channel such as echo or audio levels.
Tandem calls that undergo multiple
•
encode/decode such as calls to a
cellular network or calling card
network.
Acoustic problems coming from a
•
speakerphone, hands-free cellular
phone or wireless headset.
Check packet transmit (TxCnt) and
packet receive (RxCnt) counters to verify
that voice packets are flowing.
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