It appears that you want the ability for someone to place a call on behalf of someone else, and transfer to him/her while ringing remotely.
If so, I think the procedure is first call or be called by "someone else", then initiate a blind transfer to the third party.
I agree that even transferring a new call while alerting would be useful for example when an operator is making attempts to reach a busy destination on behalf of someone else, and transfer before answered.
I'm not able to access my old voice mail messages all of a sudden. The recording says something like 'the message is currently not available'. This has never happened before in all the years I have been using this system. I have t...