Patent ID: 7315543
Filing Date: 2008-01-01
Classification: H04L

Abstract:
1. A packet-switched communication apparatus which forwards packets pertaining to communication setup between two client terminals, one terminal being attached to a first network and the other terminal being attached to a second network, wherein said first network which carries packets by using a first protocol and said second network which carries packets by using a second protocol are connected via an address translator, said packet-switched communication apparatus comprising: mapping retaining means for retaining mappings between network-dependent parts of addresses which are used in said first network and address translators; address translator selecting means for selecting one of said address translators, based on an address included in a received packet; address obtaining means for obtaining a substitutive address to replace the address included in the received packet from the selected address translator; and address replacement means for replacing the address included in the received packet by using the obtained substitutive address.