four number pac combinations fall to 9000 0 is not used in the first field when one gives out a telephone number the sender is given a pac u2014 when the sender calls the voice answering mailbox says u201c at the tone please leave your message or press and enter pac u201d this would be after the normal message which a recipient may use to identify itself after the sender enters the pac the u201c beep u201d to record comes on and the message is left the message is sorted by the database and directed to the designated mailbox to listen to messages the user proceeds in the same manner as with the automatic method and has similar choices as to method of priority pick up forwarding etc the use of the publicly available caller i d is a valuable tool in checking data against the database in addition to the above prioritizing blocking and sorting of mail further capabilities are possible as follows 1 for computers that have off site access by modem only authorized modem connection can be allowed thereby stopping any attempted entry in the following way the method can match number dialing in against allowed numbers the allowed numbers are entered in advance and the unattended computer rejects all non authorized numbers for added protection there is no back door for modem connection 2 the method allows the following information to appear on the screen in a position chosen by the computer user a if a phone call is in bound displays telephone number and name b if a voice message comes in while on the computer integrates into a box and advises that voice mail in _ _ _ _ mailbox the user can proceed on or check c if e mail arrives.