摘要:
Methods and apparatus for establishing secure wireless links between a handset and a base station in cordless telephone systems are described. A method of generating a secure wireless link between a handset and a base station includes initiating a linking procedure, generating a security code, displaying the security code at the base station, entering the security code into the handset and then establishing a radio frequency link between the handset and the base station utilizing the security code. A cordless telephone system capable of generating a secure wireless link includes both a handset and a base station. The handset includes a control circuit, a transmitter and a receiver coupled to the control circuit along with a keypad also coupled to the control circuit. The base station includes a control circuit, a code generation circuit coupled to the control circuit, a display coupled to the control circuit for displaying a code generated by the code generation circuit, and a transmitter and receiver coupled to the control circuit.
摘要:
A main-sub relation setting apparatus for setting a main-sub relation of a cordless telephone system including a main unit and one or more sub units connected to the main unit is provided. The main unit is placed at a first location, and the main-sub relation setting apparatus and a sub unit to be newly connected to the main unit are placed at a second location different from the first location. The main-sub relation setting apparatus includes a retail outlet terminal reading main unit information for the main unit to identify itself, and a setting terminal connected to a sub unit to be newly connected to the main unit and to the retail outlet terminal, for writing the main unit information read by the retail outlet terminal to a memory of the sub unit to be newly connected to the main unit.
摘要:
The present invention provides a power adapter (10) adapted to couple an external antenna (17) to a communication device (30) by way of a cable (12) which is typically plugged into a cigarette lighter of a vehicle or some other power source at one end, and an input connector of the communication device (30) at the other. In particular, the present invention provides a simple one-piece vehicle power adapter which also provides RF input/output capability for connection to an external vehicle antenna. According to certain aspects of the invention, the adapter can be configured to have a variety of selection mechanisms. For example, the communication device could include an RF switch (34) and control circuitry for selecting either the internal or external antenna for optimum reception. Alternatively, the power adapter could include an external switch (70) for allowing the user to select the desired antenna. Finally, the power adapter could include a component which automatically actuates the switch to select the external antenna when the external antenna is connected to the communication device.
摘要:
A cordless telephone provides for increased features available at a portable unit that have heretofore been available only at a base unit which combines a cordless telephone fixed station and telephone answering device. The cordless telephone includes a call screening feature which allows a user at the portable unit to monitor incoming messages received over telephone lines as they are being recorded at the telephone answering device without the user having to configure the portable unit in any way during actual receipt of the message. A built-in loudspeaker is incorporated into the portable unit so that the user may easily listen to the incoming messages. Once receipt of the incoming message is completed, amplifier circuitry driving the loudspeaker is turned off. The cordless telephone also includes a caller-ID feature which informs the user at the portable unit of the identity of a preidentified calling party before the call is answered. This operation is achieved by the user entering into a memory table in the telephone each one of a plurality of desired telephone numbers for subsequent access and comparison when a caller-ID number is received from a calling party. The user also associates with each telephone number a voice message which is subsequently generated in the loudspeaker in the portable unit in response to a favorable comparison between the caller-ID signal and the stored telephone number.
摘要:
A wireless telephone dialing method in which the handset transmits a key number and an accompanied identification code to the base repeatedly when one number key of the handset is clicked, and the base, upon receipt of the signal from the handset, compares the accompanied identification code with an identification code stored therein so as to judge if the key number has been dialed to the telecommunication company or not, and to prevent a miss of the transmission of a key number.
摘要:
A communication system and method of connecting a mobile unit to a base station are disclosed where a connection code is stored in the base unit which is the serial number thereof. The connection code is either entered by the user of the mobile unit or is stored therein. This connection code is transmitted from the mobile unit to the base station before a communication between them is established. Such a communication is established if the connection code transmitted from the mobile unit equals to the connection code stored in the base unit.
摘要:
A radio communication system includes a base station and a plurality of terminals including a new terminal. The system enables deletion of registration data relating to the new terminal when an end of communication between the new terminal and another terminal is detected or when one of the terminals is placed in a charger base. A new terminal is installed in the radio communication system by transmitting a system code of the base station from a terminal which has already been registered to the new terminal. In addition, communication between terminals is accomplished without sending a request signal to the base station.
摘要:
In a cordless telephone system, a master unit adds to a registration signal an identification (ID) code assigned to a slave unit connectable to the master unit, a master unit transmission password, and an ID code assigned to the master unit, and sends the resulting registration signal to the slave unit. On receiving the registration signal, the slave unit determines whether or not the master unit transmission password is identical with a slave unit password stored therein. If the former is identical with the latter, the slave unit writes the master unit ID code therein, adds the master unit ID code, slave unit transmission password, and slave unit ID code to an end-of-registration signal, and then sends the signal to the master unit. On receiving the end-of-registration signal, the master unit writes the slave unit ID code included in the signal if the slave unit transmission password is identical with a password stored therein.
摘要:
The method of the present invention generally validates a communication link in a communication system. In particular, the method validates a communication link between a cordless base station and authorization and call routing equipment by authenticating the cordless base station to communicate with said authorization equipment (603) and authenticating the authorization equipment to communicate with the cordless base station (604). Preferrably, the step of authenticating the cordless base station is based upon a first random number generated within the authorization equipment (502) and the step of authenticating the authorization equipment is based upon a second random number generated within the cordless base station (504). A communication link is allowed between the cordless base station and the authorization equipment when both the cordless base station and the authorization equipment have been authenticated (614).
摘要:
In cordless telephone sets comprising at least one base station and at least one handset, an exchange of identification codes takes place between the base station and the handset. In order to realise greater flexibility with cordless telephone sets, the invention proposes to establish a connection between the handset and the base station also by means of a second identification code stored in the base station. In this manner, any user without knowing the identification codes to be exchanged between the handset and the base station can sign on and sign off a handset at any compatible base station, provided that he knows the second identification code.