A method for discriminating and interworking with a currently established network
domain in an international mobile telecommunication-2000 (LMT-2000) system including
a mobile station (MS), a radio network and one or more network domains includes
the steps of: by the radio network, analyzing information about a network domain
that is currently coupled thereto; inserting a network domain discriminator into
a synchronous channel message; transmitting the synchronous channel message to
the mobile station via a channel for communication; by the mobile station, determining
a type of the network domain; and by the mobile station, interworking with the
determined network domain via the radio network.
