Patent ID: 7813721

Claim:
A mobile terminal, comprising: a transceiver which transmits and receives wireless signals; a memory which stores a first preferred roaming list (PRL) listing a basic communication system and an existing and currently operating enhanced services system, and a second PRL listing the basic communication system but not the enhanced services system; an input unit configured to request access to the existing and currently operating enhanced services system; said transceiver further configured to receive an authentication failure report from the enhanced services system indicating a user of the mobile terminal is not authorized to use the existing and currently operating enhanced services system; and a controller which restricts an uplink access request of the mobile terminal to the enhanced services system by deactivating the first PRL and activating the second PRL in response to receiving the authentication failure report from the enhanced services system, wherein the controller restricts the uplink access of the mobile terminal to the enhanced services system as long as the first PRL is deactivated such that the mobile terminal does not transmit information requesting access to the existing and currently operating enhanced services system when the user of the mobile terminal again inputs the request to access the existing and currently operating enhanced services system, and wherein the first and second PRLs are both stored in the memory of the same mobile terminal.