Patent ID: 6442175
Filing Date: 2002-08-27
Classification: H04L

Abstract:
A cell transmission equipment having a function of assembling communication data received from an exchange, into a cell of fixed length, and then transmitting the cell to a cell transmission network, a function of receiving communication data in the form of a cell, from the cell transmission network, and thereafter disassembling the cell and transmitting the resulting communication data to the exchange, and a function of determining a communication channel inside the equipment for use in connecting the equipment with the exchange, on the basis of data contained in a cell being processed within the equipment, comprising:a passing-particular-equipment identification data insertion circuit which inserts passing-particular-equipment identification data into said communication data to be transmitted to said exchange, the passing-particular-equipment identification data serving to identify whether or not said communication data is in a relaying state in which it is to be relayed by the particular equipment; a passing-particular-equipment identification data reception circuit which receives said passing-particular-equipment identification data from within the communication data received from said exchange; a particular-communication-channel identification data insertion circuit which inserts particular-communication-channel identification data into said communication data to be transmitted to said exchange, the particular-communication-channel identification data indicating a communication channel of a cell correspondent to said communication data, when the received passing-particular-equipment identification data indicates the relaying state; a particular-communication-channel identification data reception circuit which receives said particular-communication-channel identification data from within said communication data received from said exchange; and a cell route alteration circuit which alters a route of the cell inside said equipment, on the basis of the received particular-communication-channel identification data, wherein when the received passing-particular-equipment identification data indicates the relaying state, the communication channel of a cell correspondent to said communication data bypasses the function of assembling communication data.