Abstract: A cellular telephone system is upgraded by modifying subscriber units for selective service provider acquisition during roaming. Priority of acquisition is given to those service providers associated with the home service provider. These preferred service providers are identified by System Identification (SIDs) numbers. A roaming subscriber unit will tune to control frequencies to identify all of the system providers operating in a physical area to which the subscriber has roamed. The SIDs of those system providers available are compared to a preferred SID list contained within the subscriber unit. Selection is made based upon a priority of those system providers having arrangements with the home system provider. The SID lists in the subscriber units are modified based upon a version number for each update on the SID list.

Abstract: A cellular telephone system is upgraded by modifying subscriber units for selective service provider acquisition-during roaming. Priority of acquisition is given to those service providers associated with the home service provider. These preferred service providers are identified by System Identification (SIDs) numbers. A roaming subscriber unit will tune to a single broadcast frequency to identify available system providers operating in a physical area to which the subscriber has roamed.

Abstract: A simplified system and method is provided for effecting registration in a system for routing a call to a subscriber to a personal telephone number service in an integrated wired and wireless communication network by utilizing in association with a pair of land line terminals designated by the subscriber one or two adjunct registration devices. In a manual version a registration device is situated at the site of the subscriber premise terminal and registration in the ISCP of the advanced intelligent network (AIN) of the wireline system is effected by subscriber actuation of the manual device. In an automated version the registration device at the site of the terminal includes a transceiver for emitting a periodic low power and limited range scanning signal to detect the presence of a key chain device carried by the subscriber. This device includes a miniature transceiver to effect a handshake exchange with the stationary registration device upon entering its vicinity.

Abstract: A system and method is provided for effecting registration in a system for routing a call to a subscriber to a personal telephone number service in an integrated wired and wireless communication network by utilizing in association with at least one land line terminal located in a public gathering place such as a restaurant an adjunct registration device which cooperates with portable registration devices capable of being identified by such adjunct registration devices. In a manual version an adjunct registration device is situated at the site of the subscriber premise terminal and registration in the ISCP of the advanced intelligent network (AIN) of the wireline system is effected by subscriber actuation of the manual device. In an automated version the registration device at the site of the terminal includes a transceiver for emitting a periodic low power and limited range scanning signal to detect the presence of a smart portable registration device carried by the subscriber.