Abstract: A system includes a portable remote terminal for communicating with other terminal devices and an external unit for inputting information. The portable remote terminal has a connector for connecting the portable remote terminal to the external unit, a flash memory for storing information used in the portable remote terminal, a debugging tool area provided with the flash memory, the debugging tool area storing a program in accordance with which the information stored in the flash memory is rewritten, and a controller for rewriting the information stored in the flash memory so as to be information, input by the external unit and supplied from the external unit via the connector, the rewriting being in accordance with the program stored in the debugging tool area of the flash memory.

Abstract: A cellular telecommunication switching system responsive to an emergency call from a cellular telephone to request that the geo-coordinates be transmitted from the cellular telephone and to convert those coordinates into conventional municipality or rural address location information. In one embodiment, the cellular telecommunication switching system utilizes an internal database to convert the geo-coordinates to location information. In another embodiment, the cellular telecommunication switching system utilizes an external database to perform this conversion. In yet a third embodiment, a cellular telephone performs the conversion and transmits to the cellular telecommunication switching system the location information.

Abstract: A method of establishing a telecommunications call connection in a cellular wireless system. If a mobile station is near the border between areas served by two mobile switching center (MSCs) then the mobile is paged from appropriate base stations of one of the MSCs while the other MSC is alerted to listen for page responses from the paged mobile station. Advantageously, the number of paging orders is substantially reduced thus increasing the call handling capacity of the base station systems. The second MSC is initialized to be prepared to process a page response from the mobile station being paged from the base stations of the first MSC. Advantageously, this permits straightforward recognition of a valid paging response and a record of the call with which that response is associated.

Abstract: A line control method is applied to a mobile communication system in which a mobile station communicates with one of a plurality of base stations which are installed within the same zone via a speech channel of the one base station, where the base stations have a common control channel.

Abstract: A headset telephone having an in-use indicator for notifying passers-by when the wearer of the headset is carrying on a telephone conversation. In one embodiment of the invention, an in-use indicator comprising a light-emitting diode is disposed on the end of the headset's voice boom, and is illuminated in response to activation of the headset. In another embodiment of the invention, activation of the headset causes a transmitter to transmit a signal to a remote in-use indicator not physically connected to the remainder of the telephone system.

Abstract: An interface unit adapts an existing alarm system, e.g., an existing automobile alarm system, so that it selectively provides additional alarm features not previously available. Such features are made available, at least in part, through use of the components of the existing alarm system. Thus, there is no need to remove the existing alarm system, or (in one embodiment) to even cut or relocate any of the wires used with the existing alarm system. All that is required is to install the interface unit and couple it in an appropriate manner to the existing system. The features made available through the interface unit selectively include voice messages that are triggered: whenever the alarm system senses a violation event, to indicate the arming or disarming of the system, or to report to the owner the violation events that have occurred since the system was last armed.

Abstract: An installation is described for establishing a connection between private branch exchanges (PABX), each of which has a base station allocated within a determined geographic area (GA), where the base station provides a determined number of utilization channels served by telecommunication, through which mobile cordless terminals communicate with the base station, and thereby with the branch exchange, throughout the geographic area. The base station (BS.sub.2) of a second branch exchange (PABX.sub.2) is located within the geographic area (GA) of a base station (BS.sub.1) of a first branch exchange (PABX.sub.1), and a wireless cross linkage is established by the two base stations (BS.sub.1, BS.sub.2) and their telecommunication (PABX.sub.1, PABX.sub.2).

Abstract: When abbreviated numbers and telephone number are registered, these numbers are divided into several groups and group numbers are assigned to the groups, respectively. The group numbers are stored in a main memory area of a RAM. If a certain group number is input, a CPU displays all the abbreviated numbers corresponding to such a group number, but does not display the telephone numbers corresponding to the abbreviated numbers. When a call limitation is registered to a group number, a call with the abbreviated numbers to which such a group number is assigned is prohibited and these abbreviated numbers and telephone numbers corresponding to the abbreviated numbers are not displayed.