Patent ID: 6920139

Claim:
An ATM switch wherein plural output circuits are accommodated in an output circuit module section which includes a shaper section and a circuit interface section, and an ATM cell(s) is transferred to a chosen output circuit via a shaper chosen from plural shapers which compose the shaper section at the time of a connection set-up and the circuit interface section, comprising: a shaper/circuit control section which includes a shaper/circuit-related table wherein a shaper number indicating the shaper chosen from the plural shapers constituting the shaper section at the time of a connection set-up and a circuit number of the output circuit to which the ATM cell(s) is transferred from the chosen shaper are related to each other and stored, judges whether or not a shaper corresponding to an assigned circuit number is registered in the shaper/circuit-related table in response to an interrogation about the assigned circuit number from the outside, outputs the shaper number of the corresponding shaper in the case where it is registered in the table, and establishes a relationship of a shaper number with the inputted assigned circuit number in the case where it is not registered in the table; and a connection control section which interrogates the shaper/circuit control section about the assigned circuit number at the time of a connection set-up, chooses a shaper corresponding to the shaper number from the shaper section in the case where the shaper number is inputted from the shaper/circuit control section in response to the interrogation, registers a shaper number corresponding to the assigned circuit number in the shaper/circuit-related table in the case where the shaper number is not inputted from the shaper/circuit control section, and sets up a connection between the chosen shaper and the circuit of assigned circuit number to the output circuit module section.