Abstract: A pay phone having an operation module acted with a switch hook and a push button, the operation module including a base frame, a movable frame pivoted to the base frame and defining with the base frame a coin passage for guiding an inserted coin from a coin slot to a coin box when the line is connected, or to a coin-return assembly when the switch hook of the pay phone is depressed or the handset of the pay phone is hung up before connection of the line, a suspension frame controlled by a push button through a switching frame to guide the inserted coin from the coin passage way to the coin box.