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Cisco IP Phone Models 7905G and 7912G Administrator Guide (SIP)
OL-4277-01
Chapter 9 Troubleshooting the Cisco IP Phone Models 7905G and 7912G
Resolving Problems
Symptom Time is not displayed or is displayed incorrectly on the phone.
Possible Cause
–
A Network Time Protocol (NTP) server is not specified for the phone or
the NTP server is returning an incorrect time.
–
The TimeZone parameter (in the profile or a phone’s web page) or the
Time Zone parameter (in the Network Configuration menu) is not set
correctly.
Recommended Action
–
Specify at least one NTP server for the phone and check the NTP server.
–
Verify the setting of the TimeZone or the Time Zone parameter. (You
must update the TimeZone or the Time Zone parameter value manually
when daylight savings time goes into effect and ends.)
Symptom The phone plays a fast busy tone.
Possible Cause User name or password is incorrect.
Recommended Action Verify that the user name and password are correct.
Symptom Ready screen does not appear on the phone.
Possible Cause
–
The Cisco IP Phone is trying to obtain the DHCP address or the firmware
image is being upgraded.
–
The Ethernet cable is unplugged.
Recommended Action
–
Wait for a few moments.
–
Plug in the Ethernet cable.