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Busy Lamp Field (BLF)

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A Status Indication for Each Phone on the System.

Busy Lamp Field Overview

This feature indicates which phones on the system are in use by displaying a clear status on your phone display. Each BLF key on your phone also acts as a speed dial.

How Busy Lamp Field Works

Busy Lamp Field supports up to 50 lines and allows you to display the phone status of other extensions on your phone, such as "idle," "ringing" or "on a call." Each BLF key on your phone also acts as a speed dial, allowing you to press that key to dial the corresponding extension.

Why you will like Busy Lamp Field

  • Increase phone system visibility and keep office communications flowing
  • See the phone status of each employee on your phone display
  • Use your BLF keys to speed dial employees
  • It's another way to streamline the flow of communications and serve customers better


BLF is an included feature that you get when you purchase a Vonage Business Cloud phone system. BLF can be configured on your Administrator Portal. Our Customer Care team can also help you configure the feature.