Troubleshooting - Yealink SIP-T22P User Manual

This chapter provides general troubleshooting information to help you solve the
problems you might encounter when using your SIP-T22P/SIP-T22 IP phone.
If you require additional information or assistance with your new phone, contact your
system administrator.
Why is the phone 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 plugging it directly into a wall outlet

instead.
If the phone is powered from PoE, ensure 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.

Contact your system administrator for more information.
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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 the SNTP server, you need to configure
the time and date manually.
How do I find the basic information of the phone?
Press the OK key to check the basic information of the phone when the phone is idle,
such as the IP address and firmware version. For more basic information, refer to
Status on page 13.
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 shipping information sheet which includes MAC

addresses according to the corresponding PO (Purchase Order).
You can find the MAC address in the label of carton box.
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Troubleshooting

Phone
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