Cisco 7970G - IP Phone VoIP Fehlersuche und Wartung - Seite 12
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General Telephone Call Problems
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.
General Telephone Call Problems
This section describes troubleshooting of general telephone call problems.
VPN-Connected Phone Does Not Log Calls
Problem
A remote location (home office) phone that is connected through the VPN does not log missed, placed, or
received calls.
Cause
Without explicitly setting the Alternate TFTP setting, the Cisco IP Phone cannot contact the TFTP server and
download the configuration and other files, and function properly.
Solution
Set up the phone to use the Alternate TFTP server and configure the TFTP server IP address.
Related Topics
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.
Cause
Pressing the keys too quickly can result in missed or delayed digits.
Solution
Keys should not be pressed rapidly.
Troubleshooting Procedures
These procedures can be used to identify and correct problems.
Set Up Remote Phone
Cisco IP Phones that are configured for SSL VPN to ASA using the built-in client in a remote location (for
example, a home office) have a special configuration requirement.
Troubleshooting and Maintenance
12
Set Up Remote
Phone, on page 12
Troubleshooting and Maintenance