US Patent 8045689 Method and system for call screening

A method of screening a call from a calling party to a called party, the calling party being connected to a communication network through a first line, the called party being connected to said communication network through a second line, includes sending a notification to a screening terminal which is connected to the communication network through a third line other than the second line when a voice message is being recorded by the calling party in a voice mailbox associated with the called party.