User's Manual

Troubleshooting
107
Troubleshooting
This chapter provides general troubleshooting information to help you solve the
problems you might encounter when using your SIP-T41P IP phone.
If you require additional information or assistance with your new phone, contact your
system administrator.
Why is the phone LCD screen blank?
z Ensure that the phone is properly plugged into a functional AC outlet.
z Ensure that the phone isn’t plugged into a plug controlled by a switch that is off.
z If the phone is plugged into a power strip, try plugging it directly into a wall outlet
instead.
z If the phone is powered from PoE, ensure you use a PoE compliant switch or hub, or
contact your system administrator for more information.
Why does the phone display "Network Unavailable"?
z Ensure that the Ethernet cable is plugged into the Internet port on the phone and
the Ethernet cable is not loose.
z Ensure that the switch or hub in your network is operational.
Why doesn’t the phone display time and date correctly?
Check if you have configured your phone to obtain the time and date from the SNTP
server automatically. If your phone is unable to access the SNTP server, 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 the basic information, refer to
Phone Status on page 14.
How to obtain the MAC address of a phone when the phone is not powered on?
There are three ways to obtain the MAC address of a phone:
z You can ask your supplier for shipping information sheet which includes MAC
addresses according to the corresponding PO.
z You can find the MAC address in the label of carton box.