Yealink SIP-T22 User Manual download pdf (Page 46)

Professional IP Phone Trouble Shooting

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How to send SMS?

You could edit the SMS in the Menu-> Messages->Text Messages.

Note: Make sure that the SIP server you have registered supports SMS function.

How to update the firmware?

1) Enter the webpage of your phone, go to Upgrade, then you can find the option”

Select and Upgrade Firmware” at the bottom of the page.

2) Select the file to update, then click the Upgrade button.

Note:

Make sure the firmware you choose is provided by your service provider, or the device

will probably crash after the update.

How to auto provision?

Consult the auto provision server address with your ISP.

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Yealink SIP-T22 User Manual Page 46