What Is BLF (Busy Lamp Field) and How to Get It Without Extra Hardware

What Is BLF (Busy Lamp Field) and How to Get It Without Extra Hardware

On the Telzio Dashboard, you can see a list of all the users in your organization along with their status, and call them with one click. The call is initiated through the Telzio Webphone, right through your browser.

Traditionally, the user status is called presence or BLF, short for Busy Lamp Field keys, which are red lights located along the side of the desk phone. Most desk phones come with 6-8 BLF keys that you can program different extensions into, thus making it easy to see a coworker's status and transfer calls to them. Front desk and call center operators who need more than 6-8 BLF keys require additional modules that can be purchased and attached to the phone.

With the user status indicators on the Telzio Dashboard and one-click dial capabilities via the Webphone, it's no longer necessary to purchase extra phones and modules.

How does BLF work on the Telzio Dashboard?

Upon signing into your Dashboard, you'll find a list of the users in your company along with their extensions (if they have one), and a dial button. Green signifies that the user is available, red means they're on the phone, and no color means they're offline. Simply click on the green dial button to initiate a call. You can also search for users in the search field provided.

For example, a Sales rep might show as available while Support is on a call and the rest of the team is offline. Clicking the available user's name connects the call right away, no need to walk over or call around first.

The same view is available on the Users page of your Dashboard, plus the ability to filter by Groups and find people by department.

Who uses BLF on the Telzio Dashboard?

BLF status is most useful for teams that handle a high volume of internal transfers or need to route calls to the right person quickly:

• Front desk and reception. See who's free before transferring a caller, instead of putting them on hold to check.
• Call centers and support teams. View agent status across the floor at once, without needing a phone with dozens of physical BLF keys.
• Remote and hybrid teams. Status is also available on the mobile app, so no desk phone is required to see who's available.

BLF on the Dashboard vs. physical BLF keys

Physical BLF keys still work well for teams that prefer hardware. The Dashboard covers the same core function with a few practical differences:

• Desk phones typically cap out at 6-8 BLF keys before an expansion module is needed. The Dashboard shows the full user list regardless of team size.
• Expansion modules are purchased and installed per desk phone. Adding a user to the Dashboard takes no additional hardware.
• Desk phone BLF only works at that phone. Dashboard status is also visible on the mobile app, so it isn't tied to one location.

Teams that already rely on desk phone BLF keys can keep using them. Telzio supports BLF provisioning on compatible desk phones, including Yealink, Polycom, Grandstream, and Cisco models, alongside the Dashboard view.

Getting started with BLF on the Dashboard

No manual configuration is required to use BLF on the Dashboard. Telzio's automatic provisioning adds users and displays their presence indicators instantly, and status updates in real time as soon as a user's call activity changes, so what you see always reflects who's actually available right now.

Both the Dashboard and the Users page include a search field, so finding a specific person's status doesn't mean scrolling through the full list. And unlike physical BLF keys, there's no cap on how many users you can monitor. The Dashboard shows your entire team, with the option to filter by Group on the Users page to narrow things down by department.

See BLF and one-click calling in action

Want to see how the Telzio Dashboard can replace your BLF hardware? Talk to our sales team for a personalized walkthrough and a custom quote for your team.