An Internet Access server includes a caller-ID map. The caller-ID map
stores a list of caller-IDs associated with the ISP with corresponding
user identification and password. Upon receiving a request for a
connection, the ISP extracts the caller-ID included in the request to
connect, finds the corresponding user identification and password stored
in the caller-ID map and retrieves the number of new messages in the
caller's mailbox. If there are no new messages, an audible ringing tone is
returned to the caller allowing the caller to terminate the request for
connection.
