摘要:
A subscriber switch controller for use in a telephone system operating in time frames consisting of a plurality of time slots where the system includes a base switch connected to a plurality of multitime-slot buses for switching data between any of the time slots and includes a subscriber switch connected to a plurality of local subscriber lines and to a pair of the buses for connecting encoded data between the subscriber lines and specified time slots on the buses. The subscriber switch includes a pair of subscriber switch controllers for enabling the connections between the subscriber lines and the pair of buses, where each controller includes an interface responsive to control signals for connecting encoded data from the subscriber lines to specified time slots on one of the pair of buses and for connecting other encoded data from one of said pair of buses to specified ones of the subscriber lines, and a processor responsive to the time slot connection specified by the base switch for generating the control signals, thereby enabling the connections between the subscriber lines and the multitime-slot data buses.
摘要:
An integrated telephone transmission and switching system operating in a multiframe format where each frame consists of a plurality of time slots and includes a base switch connected to a plurality of multitime slots data buses where the base switch operates to switch encoded data between any specified time slots on any of the buses. A subscriber switch is connected between a plurality of subscriber lines and to a pair of multitime-slot data buses and operates to connect and concentrate the local subscriber lines to the specified time slots on the pair of data buses, thereby enabling connections between a local subscriber line and any other subscriber line connected to the system.
摘要:
A subscriber termnal for use in a TDM telephone system operating in a multiframe format where each time frame consists of a plurality of time slots, said system including a base switch connected to a plurality of multitime slot data buses for switching encoded data between specified ones of the time slots. A subscriber switch is connected to a plurality of local subscriber lines and to a pair of the data buses for switching encoded data between the subscriber lines and specified time slots on the pair of data buses. The subscriber switch includes a number of subscriber terminals where each terminal is connected to some of the subscriber lines and includes a pair of subscriber switch controllers for controlling the switching of data between the subscriber lines and the pair of buses. Each subscriber terminal provides the capability of encoding, multiplexing and switching data from a plurality of subscriber lines to specified time slots on the pair of multitime slot buses and capability of decoding, demultiplexing and switching other encoded data from specified time slots on the pair of data buses to the subscriber lines.