Patent ID: 7693187
Filing Date: 2010-04-06
Classification: H04L,Y04S

Abstract:
1. An IP transfer network comprising: an access control apparatus; a plurality of terminals each having a user address; a plurality of logic terminals each having a network address; a plurality of communication lines connecting the plurality of terminals to the plurality of logic terminals; and a conversion table having a plurality of records, each of the plurality of records being set in advance and containing a network address, a source user address, a destination user address, and a receiver network address, wherein a user frame having a source user address and a destination user address is communicated from one of the plurality of terminals to a connected logic terminal and the user frame is inputted from the connected logic terminal into the access control apparatus, and the access control apparatus searches the plurality of records of the conversion table for a record having the network address of the connected logic terminal, the source user address, and the destination user address, and wherein, if the access control apparatus locates the record in the conversion table, the access control apparatus obtains the receiver network address from the record, and forms a network frame having the user frame and the obtained receiver network address, the network frame is communicated to a logic terminal having the receiver network address where the user frame is retrieved from the network frame and communicated from the logic terminal having the receiver network address to a connected terminal.