Patent ID: 6546012
Filing Date: 2003-04-08
Classification: H04J,H04L,H04Q

Abstract:
An interface apparatus connected between a fixed length packet used network having a plurality of virtual paths and a variable length packet used network having a plurality of logic channels for converting a variable length packets, which is received from the variable length packet used network and has data link connection identifier (ID) information as routing information, into one or more fixed length packets, which has virtual path ID information and virtual channel ID information, said interface apparatus comprising:(I) converting means, for obtaining the virtual path ID information and the virtual channel ID information by converting one or more logic channel ID numbers of one or more logic channels used for the variable length packet and the data link connection ID information, respectively, said converting means including: (I-i) first storing means for storing a first relationship between a logic channel ID number group including the individual logic channel ID numbers and the virtual path ID information; and (I-ii) second storing means for storing a second relationship between the data link connection ID information and the virtual channel ID information; and (II) disassembling means for converting the variable length packet into the one or more fixed length packets and adding the virtual path ID information, which is obtained by said converting means, and the virtual channel ID information, which is obtained by said converting means, as the routing information to the one or more fixed length packets and then outputting the added one or more fixed length packets to the fixed length packet used network; said converting means converting the one or more logic channel ID numbers and the data link connection ID information into the virtual path ID information and the virtual channel ID information, respectively, based on the first relationship in said first storing means and the second relationship stored in said second storing means.