Yealink SIP-T21 E2 User Manual page 59

2. Select Enabled from the pull-down list of Headset Prior.
3. Click Confirm to accept the change.
To use headset prior feature, you should activate the headset mode in advance:
1. Physically connect the headset.
2. Press
Note
If headset prior is enabled, the headset mode will not be deactivated until you press the
Headset key again.
If headset prior is disabled, the headset mode can be deactivated by pressing the
speakerphone key or the Headset key.
Headset prior is configurable via web user interface only.
You can use two headsets when enabling dual headset. To use this feature, you must
physically connect headsets to the headset jack and handset jack respectively. Once
the phone connects to a call, the headset connected to the headset jack will have
full-duplex capabilities, while the one connected to the handset jack will only be able to
listen.
to activate the headset mode.
Customizing Your Phone
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