| 摘要 |
PURPOSE: An apparatus and a method for reducing a routing tag in an ATM switching system are provided to reduce the path selection tag bits of a cell, while maintaining the whole switching capacity uniformly, by making the information of each self routing tag, inputted to each self routing switch formed of a dual structure to process bisectional cell information, copied respectively to the other side's self routing switch. CONSTITUTION: A cell(A2) is divide into two. Self routing tags(RTag1-RTag4) are cut into halves for each of the divided regions(a2,b2). Generally the structure of a bisectional type self routing switches in an ATM switching system is composed of a portion to process the 'a2' region information of the divided cell(A2) and a portion to process the 'b2' region information of the divided cell(A2). In addition, tag copy blocks(31a,31b) respectively are provided for self routing switches(30a,30b) provided for the portions processing the information of the a2 and b2 regions. The tag copy blocks(31a,31b) carry out a function to copy self routing tag information inputted to themselves to the other side.
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