i have CUCM 6.X and we are looking at a feature to interrupt a user while they are on a call. example, if user A is on a call (PSTN or Internal) and thier manager sees thier BLF as on a call but need to speak to them urgently, they should be able to call them, automatically put the other user on hold and then speak to intended user. basically, im assuming barge in on the call.
No shared line etc will be used and this isnt a contact centre environment.
any assistance would be appreciated.