Central Reservation System Airlines in PHP

A recent paper has described the 83B1 teletypewriter selective calling system.1 The UNIVAC airlines reservation system as a special-purpose application of a general-purpose data processor has also been described.2 The present paper continues the description of the combination of the two, with special emphasis on the alterations, relatively minor, of the standard teletypewriter selective calling system to permit its use as the communications link between the central processing equipment and various remote agent offices to which the public comes to ask questions, reserve seats, or buy tickets.