Yealink SIP-T20 - Manual (Page 48)

User Guide for the SIP-T20P/SIP-T20 IP Phone
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To deactivate the headset:
1. Press again on the phone.
The headset icon disappears when the headset mode is deactivated.
You can use headset in priority when enabling headset prior. This feature is especially
useful for permanent or full-time headset users.
To enable Headset Prior via web user interface:
1. Click on Features->General Information.
2. Select Enabled from the pull-down list of Headset Prior.
3. Click Confirm to accept the change.
To use headset prior, you should activate the headset mode in advance:
1. Physically connect the headset.
2. Press to activate the headset mode.
Note If headset prior is enabled, the headset mode will not be deactivated until you press the
H EADSET key again.
Headset prior is configurable via web user interface only.