Matches 1 - 14 out of 14


Match Document Document Title
US20080304651 System and method for overcoming dual tone multi frequency (DTMF) signal attenuation in analog and packet based networks  
A telephone may include a transmitter configured to transmit signals over a network a receiver configured to receive signals from the network a DTMF signal generator configured to generate DTMF...
US20080043993 Integration of cellular phone detection and reporting into a prison telephone system  
The present subject matter is directed to an apparatus and methodology for monitoring for the occurrence of use of unauthorized telecommunications equipment within a designated area. The present...
US20060067510 Telephone tone setting system and method  
A telephone tone setting system and method allows a speaker to set the tone of a receiver. The system includes an authorization control module, a setting module, a receiving module, a number...
US20090323923 CONTROLLER USING DUAL-TONE MULTI-FREQUENCY (DTMF) TONES  
A method and device for converting signals from a Human-Interface Device or similar input device to a stream of digital signals that are useable as inputs to an RS-232 or dual-tone multi-frequency...
US20070041574 IntelligentAdvisor TM , a contact, calendar, workflow, business method, and intelligence gathering application  
The invention is a contact, calendar, workflow, and intelligence gathering application that allows a user, such as a financial advisor to collect, codify and analyze objective and subjective data...
US20080304652 System and method for amplifying attenuated DTMF signals in a packet based network  
A network interface device may include an I/O unit configured to receive data packets from a packet network. A processing unit may be in communication with the I/O unit and be configured to...
US20060029211 Enhanced User Functionality from a Telephone Device to an IP Network  
This invention encompasses the utilization of all of the 16 DTMF tone signals on telephone devices and their use for additional adjunct feature controls over IP networks that offer a plethora of...
US20050058275 Audio source identification  
In one embodiment, a method is provided. The method of this embodiment may include issuing and/or receiving one or more signals encoding audio information and/or an identification of a source of...
US20100008493 METHODS AND APPARATUS TO DECODE DUAL-TONE SIGNALS  
Methods and apparatus to decode dual-tone signals are disclosed. An example receiver to decode a dual-tone signal includes a tone detector to detect a start of a first tone, a first counter to...
US20080080700 USER INTERFACE THAT REFLECTS SOCIAL ATTRIBUTES IN USER NOTIFICATIONS  
A method (300) for providing an audio message (105). The method can include detecting at least one external parameter (125, 130, 135). Detecting the external parameter can include detecting a...
US20080043992 Feedback impedance control for driving a signal  
A system for driving a first signal onto a wireline includes a driver and feedback circuitry. The driver drives a deterministic signal onto the wireline with an unknown impedance load. The...
US20090262924 TONE SIGNAL DETECTOR, TONE SIGNAL DETECTION METHOD, AND COMPUTER READABLE RECORDING MEDIUM  
Upon selection of the frequency of a tone signal, a local oscillator generates a frequency signal having a shift frequency corresponding to the frequency of this tone signal. A frequency shifter...
US20090154690 PARALLEL SIGNAL PROCESSING SYSTEM AND METHOD  
A system and method for processing a plurality of channels, for example audio channels, in parallel is provided. For example, a plurality of telephony channels are processed in order to detect and...
US20050058273 Methods and apparatus for detecting signaling tones in telephony data signal  
In some embodiments, a method includes storing a telephony signal data frame in a buffer, detecting a characteristic of a subsequent telephony signal data frame, and determining wheather to...

Matches 1 - 14 out of 14