Other Troubleshooting - Cisco 7935 - IP Conference Station VoIP Phone Administration Manual

Chapter 4 Troubleshooting the Cisco IP Conference Station 7935
Step 7
Step 8
Step 9

Other Troubleshooting

Problem Description
LCD screen message display
Poor voice quality when calling digital cell
phones using the G.729 codec
No dial tone
78-12727-03
Use the dialing pad to enter the IP address of the device you want to ping.
Press the . softkey to enter periods (.) and press the < softkey to correct mistakes.
Press the Execute softkey.
A reply message similar to the following should display:
Reply from 0.0.0.0
Press the Menu button to go back to the Diagnostics menu, or press the Exit
button to return to the resting display.
The following table provides some information for troubleshooting possible
problems with the IP Conference Station.
Resolution
If the message "Obtaining IP Address" is
persistent in the LCD screen display, check the
DHCP server and check the network connections.
If the message "Cannot contact TFTP Server" is
persistent in the LCD screen display, check to
make sure that the TFTP Server is up and running.
In Cisco CallManager, you can configure the
network to use the G.729 codec (G.711 is the
default). When the G.729 codec is used, calls
between the IP Conference Station and a digital
cellular phone will have poor voice quality. Use
the G.729 codec only when necessary.
For more information, refer to the
Cisco CallManager application online help.
Check that all connections are secure and in place.
Make sure all connections are correct.
Cisco IP Conference Station 7935 Administration Guide
Other Troubleshooting
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