Patent ID: 6411626
Filing Date: 2002-06-25
Classification: H04L

Abstract:
A connection number translating device for use in an ATM communication system for translating a connection number specified by VPI number and VCI number of an input ATM cell to a system-inside number, comprising:acquiring means for acquiring the VPI number and the VCI number from the input ATM cell; a translation table storing combinations of information including VPI and VCI numbers and type information indicating the type of connection decided according to the VPI and VCI numbers as well as system-inside numbers associated with the respective combinations of information; retrieval means for retrieving said translation table based on the type information and the VPI and VCI numbers acquired by said acquiring means; and judging means for estimating the retrieval result by said retrieval means so to supply a desired system-inside number, wherein said retrieval means performing retrieval two times in a first retrieving method of retrieving said translation table, with the VCI number masked, based on the VPI number and the type information indicating a VP connection and in a second retrieving method of retrieving said translation table based on the VPI and VCI numbers and the type information indicating a VC connection, said judging means deciding a desired system-inside number based on the both retrieval results of the first and second retrieving methods.