The
service allows you to check the voice mail not being by the phone or computer where the mail
comes. All one has to do is dial a special number (usually given by the
communication provider) and listen to voice mails.
The program asking you to enter the extension number of the person or department you are trying to reach. When the caller enters an extension number, the system asks the name of the caller in order to inform the called party about an incoming call, presenting the caller.