Troubleshooting
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Troubleshooting
This chapter provides general troubleshooting information to help you solve the problems you
might encounter when using your CP860 IP conference phone.
If you require additional information or assistance with your new phone, contact your system
administrator.
Why is the LCD screen blank?
Ensure that the phone is properly plugged into a functional AC outlet.
Ensure that the phone is plugged into a socket controlled by a switch that is on.
If the phone is plugged into a power strip, try to plug it directly into a wall outlet instead.
If your CP860 IP conference phone is powered from PoE, ensure that you use a
PoE-compliant switch or hub.
Why does the phone display "Network Unavailable"?
Ensure that the Ethernet cable is plugged into the Internet port on the phone and the
Ethernet cable is not loose.
Ensure that the switch or hub in your network is operational.
Why does the phone display “No Service”?
The LCD screen displays “No Service” when no SIP account registers successfully.
Why doesn’t the phone display time and date correctly?
Check if you have configured the phone to obtain the time and date from the SNTP server
automatically. If the phone fails to connect to the SNTP server, you need to configure the time
and date manually.
How do I find the basic information of the IP phone?
Press the OK key when the IP phone is idle to check the basic information of the IP phone, such
as IP address and firmware version. For more basic information, refer to Phone Status on page 8.
How to obtain the MAC address of a phone when the phone is not powered on?
Three ways to obtain the MAC address of a phone:
You can ask your supplier for the shipping information sheet which includes MAC addresses
according to the corresponding PO (Purchase Order).
You can find the MAC address on the label of the carton box.
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