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| Call logging in a wireless telecommunications system |
| OF THE INVENTION FIG. 1 is a schematic overview of an example of a wireless telecommunications ... |
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| Intercom system |
| In accordance with one aspect of the invention, a communication system includes a master control ... |
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| Wireless transceiver for communicating with tags |
| In general, in one aspect, the invention features a method for communicating with a RFID tag. The ... |
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| Fast connection establishment method for bluetooth device |
| The present invention provides a fast connection establishment method for bluetooth device. The ... |
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| System, method and apparatus for utilizing transaction databases in a client-server environment |
| OF THE PREFERRED EMBODIMENTS I. Introduction The present invention relates to a method and system ... |
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| Dictating machine arranged like a telephone handset |
| What is claimed is: 1. A device for electronic information technology, and constituting a dictating ... |
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| Video decoder having asynchronous operation with respect to a video display |
| We claim: 1. Video decoder, receiving packets from a packet switching network, said packets ... |
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| Telephone exchange including less display elements than channels |
| An object of the present invention is to provide a telephone exchange in which the state of use of ... |
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Generic handset programming and configuration
| Details |
Inventors: Brown, Paul Richard; Bleile, Leonard George;
Assignee: Nortel Networks Limited (Montreal, CA)
Primary Examiner: Nguyen; Lee
Assistant Examiner:
Attorney, Agent or Firm: Cobrin & Gittes
A method and apparatus for controlling communications between a base and a handset capable of communicating with each other on at least one communication channel within a channel set. The method involves transmitting a new channel message including a preferred channel identifier from the base to the handset, on different channels of the channel set until an acknowledgement signal is received from the handset. In response to the acknowledgement signal, the preferred channel identifier is stored in a base working channel transmit buffer. Further communications between the base and the handset are conducted on a communications channel identified by the preferred channel identifier. |
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DETAILED DESCRIPTION Referring to FIG.
1, a cordless telephone apparatus according to a first embodiment of the invention is shown generally at 10.
The apparatus includes a base 12 and a handset 14.
The base 12 has a handset cradle 16 having first and second contacts 18 and 20 operable to supply power to corresponding third and fourth contacts 22 and 24 respectively on the handset, when the handset is in the cradle 16.
Referring to FIG.
2, the base includes a base microprocessor circuit shown generally at 26.
The base microprocessor circuit 26 includes a base microprocessor 28 to which is connected a base electrically programmable read only memory (EPROM) 30, random access memory (RAM) 32, electrically erasable programmable read only memory (EEPROM) 34 and a base input/output (I/O) port 35.
Similar components are included in the handset (14 shown in FIG.
1) and therefore, the names for these components in FIG.
2 are preceded with a "B" to indicate that these components are located in the base.
Still referring to FIG.
2, the base microprocessor circuit 26 further includes a base keyboard 36, which in this embodiment, includes a conventional telephone dial pad and a user-operable scan key 38.
The base microprocessor circuit 26 further includes a base transmitter circuit 40, a base receiver circuit 42, a base power circuit 44, a charge circuit 46 and a power measurement circuit 48.
The base keyboard 36 is connected to the base I/O port 35 and is operable by the user to provide to the base I/O port 35 signals indicative of a key actuated on the keypad or to indicate actuation of the scan key 38.
The base transmitter circuit 40 and base receiver circuit 42 are operable to provide and receive radio frequency (RF) signals to and from an antenna 45, for communication with the handset (14 shown in FIG.
1).
The transmitter and receiver circuits are conventional.
The base transmitter circuit 40 is operable to provide modulation to a carrier frequency which it generates, in response to data written to the base I/O port 35 by the base microprocessor 28
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