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Class 379/31 - Of line signalling generator (e.g., dial, tone code generator)


Subclass of Class 379 - Telephonic communications
Definition: Subject matter for testing or measuring a voice frequency
No. of patents: 59
Last issue date: 09/15/2009


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NumberTitleIssue Date
7590222Techniques and apparatus for one way transmission delay measurement for IP phone connections
Techniques for measuring a one way delay between two handsets over an Internet protocol (IP) network utilize a delay measurement subsystem connected to both handsets and a procedure to couple a test signal to both handsets and measure the response to the test signal...
09/15/2009
7319863Method and system for providing an opinion and aggregating opinions with mobile telecommunication device
A mobile device (620) provides an opinion system (600) for receiving opinions from a user and displaying results relating to the received opinion. Opinion user interface elements (621-622) receive input relating to the item of the opinion...
01/15/2008
7257211Method and apparatus for controlling and/or monitoring a MULAP line
At least one MULAP line in a communication installation is controlled and/or monitored using an application. To simplify the combination of MULAP lines and CTI applications, or to allow it at all, each MULAP line has an associated MULAP call number, and a plurality ...
08/14/2007
7228139Location processing system
A device for determining the location of a communication device includes a network interface, a signal enhancement module, a tone decoder, and a translator. The network interface is capable of receiving a location message comprising a plurality of signal tones. The ...
06/05/2007
7209554Ringing controller
In a telecommunications system, a switching device selectively applies one of two different voltage supplies to a common node. A first of the voltage supplies is coupled to the common node by a first switch and a second of the voltage supplies is coupled to the comm...
04/24/2007
7181003Direct drive for a subscriber line differential ringing signal
A method of generating a subscriber line ringing signal includes the step of applying a time-varying waveform W(t) to the tip line while maintaining the ring line at a pre-determined supply level for a duration T/2. The time-varying waveform is subsequently applied ...
02/20/2007
7181004Direct drive for a subscriber line differential ringing signal having a DC offset
A method of generating a subscriber line differential ringing signal with a DC component includes providing a time-varying supply level, W(t), having a plurality of non-equidistantly spaced critical points along a folding line. W(t) is coupled to the tip line while ...
02/20/2007
7162013Home network telephone answering system and method for same
A system and method are provided for answering Home Network telephone calls. The method comprises: receiving telephone calls addressed to a Home Network endpoint; routing the received calls from a gateway to the endpoint; and, automatically recording the received ca...
01/09/2007
7158543V.8bis suppression method and apparatus for modem relay
The invented method involves one or more gateways sniffing the voice channel during the voice mode. If it is determined that V.8bis signals are being initiated, then the gateway breaks these exchanges by suppressing such signaling, thereby avoiding the above-describ...
01/02/2007
7134564Beverage bottle cap for child use
A cap (12) for a beverage bottle (14) includes a passage (22) through which beverage in the bottle may flow from the bottle. A first portion (24) surrounds the passage (22) and is engageable with the lips of a child adapted to cons...
11/14/2006
7088961Circuitry to establish a wireless communication link
Circuitry to transmit an analog data signal over a wireless communication link includes a receiver that receives a data signal, an automatic gain control circuit that keeps a peak amplitude of the data signal substantially constant and within a predetermined linear ...
08/08/2006
7054205Circuit and method for determining integrated circuit propagation delay
A circuit and method is provided for determining the delay of an integrated circuit common associated with chip-to-chip variations in the manufacturing process, changes in operating voltage, and fluctuations in temperature. A clock signal is inverted, thus generatin...
05/30/2006
7050548Localization of customer premises in a local loop based on reflectometry measurements
In the course of a reflectometry-based qualification procedure of a local loop, which connects customer premises to a central office of a telecommunication network, and in the event of being unable to identify the loop termination associated with the customer premis...
05/23/2006
7042983Method and apparatus for bridged tap impact analysis
A method and system for qualifying telephone lines for high speed data services. The system takes measurements on a line under test and matches those measurements to a model of a line. The model of the line is used to predict whether the line will support data servi...
05/09/2006
6975713Providing multiple line functionality using alternative network telephony
Providing multiple line functionality using alternative network telephony is disclosed. A local telephone installation comprises a first and second telephone equipment (associated with a first and second local node, respectively), and local telephone wiring connecte...
12/13/2005
6909978Signal pre-processing for estimating attributes of a transmission line
In the process of estimating attributes of a transmission line from reflectometry measurements, small yet important reflections may be drowned in the immediate reflected signal owing to the mismatch between the reference impedance with respect to which the 1-port sc...
06/21/2005
6813340Ringing SLIC fault handling
A line card or other telephone or communications interface provided with a ringing SLIC outputs relatively high voltage, such as in excess of about 90 volts, and/or relatively high current such as in excess of about 20 milliamps during normal use, but decreases the ...
11/02/2004
6775355Line sharing multipoint POTS splitter masking noise
The eavesdropping prevention system and method of the present invention provides a mask signal generator which generates a mask signal superimposed over a leakage signal. The mask signal prevents meaningful detection and amplification of the leakage signal. The ampl...
08/10/2004
6711238Parallel-connected dialing signal transmission inhibiting device for data transfer over a telephone link
A parallel-connected dialing signal detection and transmission-inhibiting device is disclosed which detects dual-tone multi-frequency dialing signals across tip and ring conductors of a telephone link and switches in an a.c. load that attenuates the dialing signals ...
03/23/2004
6707886Method and system for testing subscriber loops using touchtone telephone signals
A subscriber loop test apparatus relates to the testing of a subscriber loop by the use of a touchtone telephone. The touchstone buttons on a telephone provide Dual-Tone, Multiple Frequencies for each key pressed. For example, referring to FIG. 1, pressing th...
03/16/2004
6693992Line probe signal and method of use
A system, method, and signal are disclosed for line probing. The invention provides an improved signal for line probing having desirable characteristics. In various embodiments the signal comprises a periodic sequence having good autocorrelation character...
02/17/2004
6466650Telecom service identification transponder apparatus and technique
Telephone line service type identification is provided to a telephone technician in the field by the placement of one or more tuned circuit(s) across the telephone line. In one embodiment, an inexpensive tuned circuit such as a ceramic resonator forms a t...
10/15/2002
6377663Call management system and associated method for a local telephone circuit
A call management system includes a local telephone circuit, a first telephone set, a second telephone set, and a telephony device. The first telephone set, the second telephone set, and the telephony device, each coupled to the local telephone circuit. T...
04/23/2002
6298119System and method for digital telephone trouble reporting
A system and method for telephone trouble reporting. One aspect of the present invention is a context-sensitive graphical user interface (GUI). The GUI allows a user to select a trouble reporting option at various stages of a telephone call in a telephony...
10/02/2001
6263047Apparatus and method for characterizing the loading pattern of a telecommunications transmission line
An apparatus and method for characterizing a loading pattern of a twisted pair telecommunications transmission line includes a variable frequency signal generator and a measurement receiver connected to the twisted pair line. The signal generator applies ...
07/17/2001
6253069Methods and apparatus for providing information in response to telephonic requests
Methods and apparatus provide a reply to a telephone caller in response to an abbreviated input string. A message is received from a telephone caller during a telephone call, and supplemental information is derived which relates to at least one of the tel...
06/26/2001
6233312Inter-circuit line fault location in telecommunication networks
Circuit faults between different circuits in a telecommunications network are located. In this invention a test signal is generated on a particular circuit and all adjacent circuits are tested for the presence of the test signal. Using information from a ...
05/15/2001
6154447Methods and apparatus for detecting and locating cable failure in communication systems
In switching centers serving multiple local access providers, a problem arises in detecting cable failure and identifying the provider of the failed cable connected between the switching center and remote terminals. A test circuit installed in each cable ...
11/28/2000
6128370Multiple tone detection using out-of-band background detector
A multiple tone detector includes n tone detectors, each detecting one of n distinct tones, where nࣙ2, and a background detector which generates a measure of accumulative background energy Eavg in a frequency band or bands which do not includ...
10/03/2000
5995557Tone detection with aliasing bandpass filters
To detect a dual tone pair signal in a telephone communication system, the signal is sampled at the Nyquist frequency. The sampled signal is filtered to determine the top three tone frequency power results. The input signal is then resampled at one-half o...
11/30/1999
5937030Off-hook signal and dial pulse generating circuit and a method for driving the same circuit
An off-hook signal and dial pulse generating circuit which has a smaller number of switching devices having a high withstand current characteristic and has a less surge voltage than up to now. A dial pulse circuit and a switch block circuit are connected ...
08/10/1999
5898756Parallel-connected dialing signal transmission-inhibiting device for data transfer over a telephone link
A parallel-connected dialing signal detection and transmission-inhibiting device is disclosed which detects dual-tone multi-frequency dialing signals across tip and ring conductors of a telephone link and switches in an a.c. load that attenuates the diali...
04/27/1999
5881146Method and apparatus for determining digits dialed using a selected algorithm
A technique for minimizing the number of users which must dial training digits in a voice processing system. The system uses the first digit normally dialed as part of the user responses to the voice processing application, and measures such digit to dete...
03/09/1999
5818904Collaborative trunk testing method and system
A method and connectivity evaluation system for testing trunk lines dedicated by a centralized telecommunications system to a customer switching system, such as a PBX, includes allowing the trunk-seizing capability of the telecommunications system to be r...
10/06/1998
5809111Telephone control module and user site network and methods of operation
A multi-station telephone system having a telephone control module (24) based user site network is provided. The system includes a plurality of electronic devices (26) located at a user site (12). A site telephone line (20) is coupled to a telephone line ...
09/15/1998
5787147Test message generator in a telecommunications network
A test message is constructed using a set of predefined natural language message types and keywords. The constructed test message is then interpreted during run-time and converted to a properly formatted Transaction Capable Application Part (TCAP) message...
07/28/1998
5781611Method and apparatus for monitoring status of speech connection between central office lines
A method and apparatus for monitoring the status of a speech connection between central office lines in a private exchange system may be constructed with a controlling unit for controlling a connection between a network and a corresponding central office ...
07/14/1998
5570418Device for detecting operation state of telephone hook switch
A device for detecting an operation state of a telephone hook switch in a telephone includes a timer, a controlling circuit, a counter and a table electrically interconnected. According to the present invention, the abnormal signals generated by the hook ...
10/29/1996
5561700Device for measuring analog telephony signals
A device, for digitally measuring in real-time analog telephony signals appearing on a subscriber line during a telephone call thereover, having a converter for converting analog subscriber line voltages into corresponding digital samples, a memory for st...
10/01/1996
5528663DTMF detection for voice processing equipment
By testing a received signal for power, frequency content, and stability, one can measurably improve DTMF signal detection and identification performance in voice store and forward systems. The algorithms described here have been found to be especially us...
06/18/1996
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