Systems and methods provide a call monitoring service for multiple telecommunications units. When an incoming communication directed to a subscriber's simultaneous ring number is received, outgoing communications are placed to each of the telecommunications units associated with the subscriber's simultaneous ring number. A determination is made as to whether the incoming communication should be routed to the voice mail system. If the incoming communication should be routed to the voice mail system and the call monitoring service is activated, a communication between the calling party and the voice mail system is established. A determination is made as to whether a user of one of the telecommunications units takes an action to connect to the communication between the calling party and the voice mail system. If an action is detected, then a communication between the calling party, the voice mail system, and the telecommunications unit is established.