Finding if an extension is in use

General Help
1

Wanted to begin by saying that this forum is great, have set up features on the phone system that I was not even aware of. Thank you to those that post here!

Now to my issue…
I have the latest build of FreePBX installed and have about 11 extensions configured with 4 incoming telephone lines.
The phones used are 2 Polycom SoundPoint 550 for the reception (extensions 101 and 102) and 9 Polycom SoundPoint 320.

How can we see on the other extensions whether the reception phones are in use?

Thank you.

2

Program buttons ofn the phone as BLF for the target extension.

BF

3

Typo up above…

Should be:
Program buttons of the phone as BLF for the target extension.

4

Thank you for the suggestion. I was thinking the same thing. I was thinking to add the primary extension (101) under line 2 on each phone.
This might be a stupid question but what does BLF stands for?

5

Busy Lamp Field