The same is true today for telephone answering machines as opposed to voice mail services. TADs offer important feature advantages. For example, with call screening a user can listen to someone leaving a message. TADs allow a call to be intercepted once the outgoing message or incoming message has begun. Voice Mail systems do not allow these options.
TADs provide message indicators, which show the number of messages received.
Message playback is easy with the touch of a button, compared to a multiple step process of calling a voice mail center and entering a security code to retrieve messages. Message Forwarding tm between mailboxes, Message File Storage tm , and connection of Caller ID information with voice messages.