Yealink SIP-T4X, Administration Manual

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Configuring Advanced Features
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Phone User Interface Assign a BLF key.
To configure a BLF key via web user interface:
1. Click on DSSKey->Line Key.
2. In the desired DSS key field, select BLF from the pull-down list of Type.
3. Enter the phone number or extension you want to monitor in the Value field.
4. Select the desired line from the pull-down list of Line.
5. (Optional.) Enter the directed call pickup code in the Extension field.
6. Click Confirm to accept the change.
To configure visual alert and audio alert features via web user interface:
1. Click on Features->Call Pickup.
2. Select the desired value from the pull-down list of Visual Alert for BLF Pickup.