ARRANGEMENT OF INTERACTIVE TELEPHONE SWITCHING PROCESSORS FOR CONTROL OF PORTS

摘要

A telephone switching system in which a call processor and port event processor interact to control call progression and switching. The port event processor and the call processor communicate through a port storage means which stores information concerning the status of each port and its connected telephone line. The port event processing means connects to the port storage means and alters certain items of port status information in response to other items of port status information. Switching means are provided connected to the port means and to the port storage means to effect actual switching of intelligent signals among the various port means. Supervisory signals representing telephone line conditions are transferred to the port means and the port storage means by the switching means while receiver supervisory signals are transferred from the port means and the port storage means. The call processing means in connected to the switching means and to the port storage means and uses information in the port storage means to control call progression. The call processing means at various times exchanges information with the switching means to establish the paths for intelligent signals through the switching means as well as altering information in the port storage means to control the operation of the port event processing means.