Abstract: A data transmission network enables address encoded messages to be transmitted via a radio wave type communications medium to multiple receivers, each of which is assigned a multiple byte address indicative of various characteristics of the owner of the receiver. The message addresses may include wild card characters to designate applicability to all receivers. If the message address matches the receiver address, the message is stored in a review. The stored messages may be output by alternative apparatus including a circuit capable of generating audio from digital data, a computer or terminal for storage and reuse of the message, and a printer.