A multi-network exchange system has a first type network (PSTN) and a
second type network (Internet) and a multi-network exchange bridge in
communication with the first and second type networks for the transfer of
electronic information signals (telephone calls) between the first and
second type networks. The multi-network exchange bridge apparatus
facilitates transfer of electronic information signals to a portable
access device or a gateway portal in communication with a node of one of
second type networks from the first network. The multi-network exchange
bridge has at least one multi-network instantiation device that enables
the portable access device to function as a remote extension of the
multi-network exchange bridge. A fixed address translation device
provides conversion of a first address fixedly describing a node of the
first type network to a second address or third address virtually
describing nodes of the second type network
