Mitel 6867i Configuration Manual page 11

Make sure Auto Provisioning is set to Yes.
Make sure Presence is set to "Yes".
Click on the Save button to save changes.
Click on Enhanced services.
Click on Directory / BLF List check box and click on Save button in order to enable this
feature.
Click on Directory / BLF List Edit button.
Enter user extension number and click on the BLF check box.
Click on Save button.
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