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.
A user complains of choppy speech on a call.
There may be a mismatch in the jitter configuration.
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
A user complains about not being able to make a call.
The phone does not have a DHCP IP address. The phones display the message Configuring IP or Registering.
1 Verify the following:
a The Ethernet cable is attached.
b The Third-Party Call Control system is active.
2 Audio server debug and capture logs are enabled for both phones. If needed, enable Java debug.
Phone Does Not Recognize DTMF Digits or Digits Are Delayed
The user complains that numbers are missed or delayed when the keypad is used.
Cisco IP Conference Phone 7832 Multiplatform Phones Administration Guide