Customizing Your Phone
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You can use two headsets when enabling the dual headset feature. To use this feature,
you must physically connect headsets to the headset jack and handset jack respectively.
Once the phone joins in a call, people with the headset connected to the headset jack
has a full-duplex conversation, another people with the headset connected to the
handset jack is only allowed to listen to.
To enable Dual Headset via web user interface:
1. Click on Phone->Features->Audio Settings>>.
2. Select Enabled from the pull-down list of Dual Headset.
3. Click Confirm to accept the change.
There are two types of DSS keys: Line Keys and Programmable Keys. The details will be
introduced as following. SIP-T20P IP phone supports 2 Line keys.
You can assign predefined functionalities to the line keys located on the right of the
phone. Line keys allow you to use quick access features such as call return or voice mail.
The line keys LEDs will indicate the extension status when being assigned specific
feature, such as BLF. The default key type of each line key is Line.
To configure the line key via phone user interface:
1. Press .
2. Select Features->DSS Keys.
3. Select the desired DSS key, and then press .
4. Select the desired type from the Type field.
5. (Optional.) Select the desired key event from the Key Type field.
6. (Optional.) Select the desired line from the Account ID field.
7. (Optional.) Enter the corresponding value in the Extension field.
8. Press to accept the change.
You can also configure the line key via web user interface at the path Phone->DSS
Keys->Line Keys.
The line key features are explained in the following subchapters in detail:
Speed Dial
Voice Mail
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