Yealink SIP VP-T49G User Manual page 254

User Guide for SIP VP-T49G IP phone
If the phone is plugged into a power strip, try to plug it directly into a wall outlet

instead.
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.

Ensure that the wireless network is available.

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, contact your
system administrator for more information. You can also configure the time and date
manually. For more information, refer to
Why does the wallpaper has bad display？
Do one of the following:
Check that the custom image is clear.

Check that the file format of the custom image for the wallpaper is *.jpg, *.png or

*.bmp.
Check that the custom image is neither too large nor too small. The phone will

adjust the image to be able to display it.
Check the picture resolution of the wallpaper. The wallpaper resolution of the SIP

VP-T49G IP phone is 1280*800 pixels.
Why can't I access web user interface using the default administrator user name and
password (admin/admin)?
It is case-sensitive, ensure the case is correct.

Ensure the password has not been changed.

If the password has been changed, but the computer remembers the old password,

try to clear the browser cache and try again or select another browser to login.
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Time & Date on page 62.