Abstract: A mobile terminal (10) has multiple alternative protocol stacks (151, 152 . . .) which correspond to the protocols used on multiple backbone networks (30a-30c) to which the mobile terminal can obtain access through one or more radio access networks (20a-20c) with which it is in communication using a common, predetermined low level signalling protocol. The radio access network (20) broadcasts signals (102) indicating the types of backbone network to which it is connected (and thereby the protocols they employ), and on encountering a signal indicating a new type of backbone network, a mobile terminal 10 may download a new protocol stack from the radio access network.

Abstract: Method and apparatus for providing a FSK data slicer for use in wireless telecommunications such as cordless telephones. The FSK data slicer is used by a receiver circuit in a wireless telecommunication device for converting an analog data signal to a digital data signal. Furthermore, the FSK data slicer responds to different mode of the analog data signal. The FSK data slicer includes a low-pass filter, a controller, a comparator, and an integrator. The low-pass filter receives the analog data signal for generating a median voltage, or slice voltage. Furthermore, the low-pass filter includes connectors to allow an external resistor to be serially connected between the filter input and the analog data signal and to allow an external capacitor to be connected in parallel with the slice voltage at the filter output. The bandwidth of the low-pass filter is controlled by the controller.

Abstract: In a wireless terminal adapted to operate according to more than one air interface protocol, processing circuits are provided to process signals received by the terminal or to be transmitted by the terminal according to the respective protocol. One of the processing circuits is chosen to be connected to user interface equipment of the terminal to communicate with that equipment also on behalf of the other processing circuits according to a user interface equipment signal format. The other processing circuits communicate with that one processing circuit via a bus according to a bus signal format. The one processing circuit converts the bus signal format to the user interface equipment signal format and vice versa when the terminal is operating according to the protocol of any of the other processing circuits (2-4).

Abstract: Apparatus, and an associated method, controls operation of a mobile terminal operable in a communication system having two network portions. Selective permission of cell selection of communications between the two network portions better assures that the mobile terminal, when positioned in an area intended to be encompassed by one of the network portions, communicates with that network portion.

Abstract: A method for foiling cellular telephone cloning by verifying subscribers of a cellular communications network is accomplished by having each subscriber provide a multi-digit verification number (for example, a local telephone number, typically not his/her own), unique to that subscriber, to the cellular telephone company and long distance carrier to verify legitimate subscribers. The verification numbers provided by the subscribers are stored in respective databases and correspond to electronic serial numbers of subscriber telephones. Shortly after each power-up of the cellular telephone, the subscriber either invokes an automatic dialer or manually dials the verification number. A computer in the cellular network receives the subscriber's first call (containing an electronic serial number, network identification and verification number) after power-up and verifies the dialed verification number against the verification number stored in the database.

Abstract: In certain wireless communication systems, including at least some CDMA cellular systems, short messages can be delivered to mobile stations in a broadcast fashion using a common forward (downlink) channel sometimes referred to as the Paging Channel. Economy in the use of the Paging Channel can be achieved by using so-called slotted mode reception. In accordance with this mode, the infrastructure directs messages to a given mobile station only during time slots allocated to the particular group of mobile stations to which the given station belongs. These time slots recur according to a paging slot cycle having a specified length (expressed as a number of slots), or slot cycle index. Disclosed here is a further cycle, referred to as the Broadcast Paging Cycle, for use in implementing a service for broadcasting short messages (to many mobile stations). The Broadcast Paging Cycle has an index that is larger than, and incommensurable with, the paging slot cycle index.

Abstract: The circuit (7, 8, 9, 10) comprises, in addition to the automatic gain control (AGC), a gain reduction means for controlling the gain of an amplifier (8), intended to avoid the desynchronization of the local oscillator (7) controlled by a phase-locked loop comparator (12). This is controlled by a peak detector of the amplified signal situated at the output of the amplifier (8).

Abstract: A system and method for providing overflow on demand in a telecommunications network. The network includes at least one originating call location, at least one terminating call location that subscribes to an overflow on demand service, a data access point (DAP), and at least one switch. When a caller at the originating call location places a call to a chosen call terminating location, the call is routed to that location via the switch under DAP control. Under certain circumstances, the caller can cause overflow processing to occur by merely pressing the "*" key, on a telephone keypad. Overflow processing typically includes routing the call to an overflow call terminating location specified in the call processing plan for the chosen location.

Abstract: An arrangement interconnects a first communication system and a second communication system. The first communication system is a cellular mobile communication system. The second communication system is a cordless access system. The systems are connected via an interworking function which is connected to a Mobile Switching Center of the first communication system via an existing interface of the first communication system. The interworking function is connected to an access system of the second communication system via an interface of the second communications system.

Abstract: A receiver including an rf amplifier(14) having an input, an output and a gain control input(38), for deriving a gain control signal. A gain control (36) responsive to the gain control signal. The gain control (36) comprises at least 2 parallel arranged bias currents (40,42,44), at least one(42 or 44) of the 2 bias current means including switching means(SW1 or SW2) responsive to a control voltage varying by a predetermined amount relative to a reference voltage(V.sub.ref1 or V.sub.ref2) for actuating the switching means(SW1 or SW2) to connect or disconnect the bias current (42 or 44) to or from the gain control input.