Yealink SIP VP-T49G User Manual page 279

Enter the number you want to send the message to in the To field.
4.
Compose the new text message. You can tap
5.
Tap to hide the onscreen keyboard.
6.
Tap the Send soft key to send or
7.
You can also tap the Save soft key to save the text message to the draftbox.
Sending a text message
is configurable
To reply a text message:
Tap ->Message->Text Message->Inbox.
1.
Select the desired message and tap the Reply soft key.
2.
to change the input mode.
to cancel.
via web user interface at the path Features->SMS.
Advanced Phone Features
279