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Solution
When at least one person in a call does not receive audio, IP connectivity between phones is not established.
Check the configuration of routers and switches to ensure that IP connectivity is properly configured.
Choppy Speech
Problem
A user complains of choppy speech on a call.
Cause
There may be a mismatch in the jitter configuration.
Solution
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.
General Telephone Call Problems
The following sections help troubleshoot general telephone call problems.
Phone Call Cannot Be Established
Problem
A user complains about not being able to make a call.
Cause
The phone does not have a DHCP IP address. The phones display the message
Configuring IP
or
Registering
.
Solution
1
Verify the following:
a
The Ethernet cable is attached.
b
The Third-Party Call Control system is active.
2
Enable audio server debug and capture logs on both phones, then examine the logs.
Phone Does Not Recognize DTMF Digits or Digits Are Delayed
Problem
The user complains that numbers are missed or delayed when the keypad is used.
Cisco IP Phone 6800 Series Multiplatform Phones Administration Guide
215
General Telephone Call Problems
Содержание IP Phone 6841
Страница 15: ...P A R T I About the Cisco IP Phone Cisco IP Phone Hardware page 3 Technical Details page 11 ...
Страница 16: ......
Страница 34: ...Cisco IP Phone 6800 Series Multiplatform Phones Administration Guide 20 External Devices ...
Страница 35: ...P A R T II Phone Installation Cisco IP Phone Installation page 23 Third Party Call Control Setup page 61 ...
Страница 36: ......
Страница 79: ...P A R T III Phone Accessories Cisco IP Phone Accessories page 67 Wall Mount Kit page 71 ...
Страница 80: ......
Страница 84: ...Cisco IP Phone 6800 Series Multiplatform Phones Administration Guide 70 Headsets ...
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Страница 146: ...Cisco IP Phone 6800 Series Multiplatform Phones Administration Guide 132 Configure the XML Directory Service ...
Страница 147: ...P A R T V Phone Troubleshooting Monitoring Phone Systems page 135 Troubleshooting page 209 Maintenance page 221 ...
Страница 148: ......
Страница 222: ...Cisco IP Phone 6800 Series Multiplatform Phones Administration Guide 208 Cisco IP Phone Web Page ...