Abstract: A new and improved highway sign or billboard advertising structure having a vertical support post on which a sign face support structure is mounted. Each of these sign face support structures has a scaffold mounted adjacent the bottom of the sign face extending inwardly toward the support. A housing encompasses the entire sign face support structure. The housing has openings therein through which the sign faces may be viewed. The housing being environmentally sealed to exclude birds, rodents and insects from the enclosed space between opposite sign faces surrounding the multiple scaffoldings.

Abstract: A text teletype writer (TTY) is provided for receiving, processing, and displaying caller identification information in a visual display. A call back function is included to allow for automatic DTMF dialing of a telephone number associated with a previously received call.