I have CUCM 6.1.3 and I would like when a call is made to another internal user, that if they are on the phone, it could let the calling party know somehow that they are on the phone, like the old nortel phones used to do. Is there a way to do this in CUCM, so that the calling party can know if they called party is on the phone or not? Thanks in advance for the help.
Sure, here you can read about it:
BLF/Speed Dial Configuration Settings:
Hope it helps, remember to rate helpful posts.