On call notification in IP Phone screen

[snowygarcia]

Hi folks,

I am trying to emulate something that can be done in the old Nortel Meridian Digital phones, and is the following.

When a user calls another and the other party is in a call, I want the phone to notify in caller's screen that the the called extension is in a call, so he can maybe call later and not to wait the voicemail message to say he/she is using the phone. I don't know if this can be done in with yealink, I already tested the BLF feature but I would need a BLF key for every extension that we have in the PBX, so imagine a 50 extensions PBX. I am actually using Yealink T2XP and Elastix as IP PBX.

I really need this feature because sometimes people call each other and think the called party don't want to take the call when what really happens is that he/she has a call.

Regards,