Aastra 9000i Series Administrator's Manual page 344

Aastra Web UI
1 Click on Basic Settings->Preferences->General.
2 Enable the "Suppress DTMF Playback" field by checking the check box.
(Disable this field by unchecking the box). Default is enabled.
3 Click
You must restart your IP phone for the changes to take affect.
4 Click on Operation->Reset.
5 In the "Restart Phone" field click
41-001343-01 Rev 02, Release 3.2.2
to save your settings.
to restart the IP phone and apply the changes.
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