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571 results about "Telephone number" patented technology

In mathematics, the telephone numbers or the involution numbers are a sequence of integers that count the ways n telephone lines can be connected to each other, where each line can be connected to at most one other line. These numbers also describe the number of matchings (the Hosoya index) of a complete graph on n vertices, the number of permutations on n elements that are involutions, the sum of absolute values of coefficients of the Hermite polynomials, the number of standard Young tableaux with n cells, and the sum of the degrees of the irreducible representations of the symmetric group. Involution numbers were first studied in 1800 by Heinrich August Rothe, who gave a recurrence equation by which they may be calculated, giving the values (starting from n = 0)

Three-way call detection using steganography

Three-way call detection is an important component of correctional facility telephone equipment because it helps restrict calling access by certain persons to certain restricted telephone numbers. Various three-way call detection methods exist, but all of these implementations suffer from one major limitation-the detection accuracy is not as high as is desired by the industry. The present invention improves detection accuracy, using “steganography.” Steganography involves hiding one set of data or signals within another signal or carrier in such a way that its presence is typically imperceptible to the human ear, and potential even the originator of the carrier signal. The present invention involves a device that connects to a telephone, either at the line or the handset interfaces, and produces a known signal that is steganographically hidden within the user's normal voice signal. Detection equipment, residing at another location, monitors signals on telephone calls and tests for the presence of the hidden signal or data generated by the invention. Once detection is achieved, appropriate action, such as terminating or recording the call, may be taken. Improved accuracy is achieved by choosing the appropriate hidden signal(s). Once detected, the presence of the signal guarantees the call was made to the restricted party from a particular phone line.
Owner:DSI ITI INC

Telephone network-based method and system for automatic insertion of enhanced personal address book contact data

A system and method for automatic insertion of enhanced personal address book contact data from the telephone. The PAB telephone network-based system includes an application unit to coordinate the addition of new contact data by a user via his telephone, and/or is used in conjunction with his Web-browser or other Internet/Intranet access device. The system includes an ASR recognition server used to assist in adding a new contact to the PAB, and also to match the spoken name gathered with the possible data augmented data as extracted from a system-resident white pages, or other source, such as an external white pages. The system is connected to a telephone network, or group of telephone networks including elements from one or a combination of components of E1, T1 or VoIP apparatus. When at least one name matching the new contact telephone number is found, the system attempts to automatically confirm it or choose between the names based on matching the spoken name and the textual name found using ASR. The appropriate matching name and associated data from the White pages are inserted in the PAB of the user as a new contact entry. The augmented text name of the contact can be used by the ASR subsystem to replace the original training or can be used in addition to the original training.
Owner:COMVERSE
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