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Class 379/27.03 - By analysis of testing signal


Subclass of Class 379 - Telephonic communications
Definition: Subject matter which includes placing a signal into the
No. of patents: 112
Last issue date: 04/06/2010


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NumberTitleIssue Date
7693266Method and system for measuring acoustic quality of wireless customer premises equipment
A method, system, and medium are provided for testing a network communications component. A model of a substantially ideal communications network is provided and a test signal is generated at an input of the network model. An output signal from the model is transmit...
04/06/2010
7561670End-to-end network testing
The invention includes a system and a method for testing a communication network. The inventive method transmits a first signal from a first point to a second point of the communication network, where the first and the second points are remotely located. The inventi...
07/14/2009
7388946System and method for evaluating the quality of service in an IP telephony network using call forwarding
Methods and systems are described for verifying communications paths on a network. A test signal is forwarded between network nodes to evaluate quality of service in an IP telephony system. A test call is generated by a call initiator, communicated to one or more ne...
06/17/2008
7310315Node judging method, communication system, and node measuring apparatus
In a communication system wherein a station transceiver and a plurality of nodes communicate in a TDM system through a signal transmission line, at least a part of the line is shared, a method to judge nodes performing normal operation from the station transceiver c...
12/18/2007
7305067Tone distribution apparatuses, systems, and methods
An apparatus and system for connecting a tone generator to a plurality of conductors communication line. The apparatus includes an interconnect structure that includes multiple leads each including an electrically conductive portion having a first end and a second e...
12/04/2007
7302046Method for the detection of impedances and for the qualification of the telephone lines
The invention relates to a method for detection of impedances, in particular along inductances, in telephone lines of the type with two metal wires as signal conductors (twisted pair), having the following method steps: a test signal in the form of an A...
11/27/2007
7236573Method and apparatus for testing telephone sound quality
A method and apparatus for testing telephone sets to determine their sound quality comprising a system for repeatedly applying a sequence of pulse tones to a test telephone where the respective tone frequencies are different and within the normal human voice range.
06/26/2007
7151819End-to-end network testing
The invention includes a system and a method for testing a communication network. The inventive method transmits a first signal from a first point to a second point of the communication network, where the first and the second points are remotely located. The inventi...
12/19/2006
7111049System and method for providing internet based phone conferences using multiple codecs
A method of communicating digitized speech from a transmitting forum participant comprises the step of receiving a data structure that includes said digitized speech. The data structure is analyzed to determine whether the digitized speech is redundantly represented...
09/19/2006
7103147Methods and apparatuses for determining loop characteristics using standard voice-band modem
Embodiments of the invention provide methods and apparatuses to determine the characteristics of a local loop using the multi-tone line-probing signals of a standard voice-based modem. For one embodiment, the multi-tone, line-probing signals of a voice-band modem ar...
09/05/2006
7072449System and method for establishing a power level for a communication signal transmitted in a conductor
A method of establishing a transmission power level for signals transmitted in a conductor is provided in an environment where signal interference is present between the signals in the conductor and separate signals carried in a proximate conductor. The method inclu...
07/04/2006
7071700Characterizing analog and digital telephone circuits and other types of wiring systems using frequency domain reflectometry (FDR)
The structural and termination characteristics of a telephone or other wiring circuit can be determined by generating a continuous stream of low-energy electrical signals, injecting these into the circuit under test, and analyzing the energy reflected at impedance c...
07/04/2006
7068755Methods and apparatus for characterizing subscriber loop based on analysis of DSL handshaking signals and for optimization of DSL operation
In some embodiments, a method includes performing at least part of a digital subscriber line (DSL) handshaking process by transmitting at least one handshaking signal via a telephone subscriber loop, and analyzing the at least one handshaking signal to detect a char...
06/27/2006
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
7050400End-to-end connection packet loss detection algorithm using power level deviation
A method is described for detecting total end-to-end loss of data packets in a packet network that does not require direct access to the packet network. A test signal is generated at a source end point indirectly coupled to the packet network. The test signal is tra...
05/23/2006
7039685Method and apparatus for conducting subscriber's phone testing remotely via the internet
An apparatus for and method of remotely controlling electronic devices, such as telecommunication equipment attached to telephone lines, test equipment, and/or home electronics includes a master board (105) having its own IP address and arranged and construct...
05/02/2006
7020246Time domain reflected signal measurement using statistical signal processing
An apparatus and technique for determining whether a telephone loop is capable of carrying a Digital Subscriber Line (DSL) signal. Time domain reflected (TDR) signals that are echoes of transmit impulse signals are processed using time domain echo averaging and echo...
03/28/2006
7020164System and method for special signaling with customer premises equipment
A system and method are provided for special signaling with customer premises equipment. The system includes loop termination equipment coupled to a local loop and comprising a signal generator. The system also includes customer premises equipment coupled to the loc...
03/28/2006
7010096Remote testing of a communications line
Apparatus and method for remotely measuring characteristics of a communications line (4) wherein a receiver unit (8) is connected a remote end of line (4) between conductors (10,12) of the line (4) and a sender unit (6) is c...
03/07/2006
6985444Binning of results from loop qualification tests
The present invention provides a method and apparatus for performing line qualification tests, and binning the results of such testing. The lines are tested to determine or estimate various characteristics of the line. Physical characteristics of the line may be est...
01/10/2006
6959069Method for testing subscriber line of private automatic branch exchange using dual-tone multi-frequency signal
A method for testing a subscriber line of a PABX (Private Automatic Branch eXchange) using a DTMF (Dual-Tone Multi-Frequency) signal. The method includes the step of controlling a DTMF transmitter in response to a line test request from an exchange operator to trans...
10/25/2005
6914961Speed binning by neural network
A method of allocating subscriber lines in a telecommunications network into speed bins. With the method, more intelligent business actions can then be taken in the provision of high-speed data services over the subscriber lines. For example, only qualified lines mi...
07/05/2005
6879827Testing a communication network with a shared test port
A system for testing a communication network includes a test system and a cross-connect system. The test system generates a plurality of independent low data rate test signals with first data rates. The test system combines the independent low data rate test signals...
04/12/2005
6865256Method and apparatus for determining properties of a transmission channel
The invention concerns a time domain reflectometry method for estimating properties of a transmission channel, for instance a channel for transmitting electric or acoustic signals. This method includes the steps of generating, at one end of the channel, a plurality ...
03/08/2005
6853708End-to-end network testing
The invention includes a system and a method for testing a communication network. The inventive method transmits a first signal from a first point to a second point of the communication network, where the first and the second points are remotely located. The inventi...
02/08/2005
6829330Systems and methods for loop characterization from double-ended measurements
The loop length, the number of bridge taps and the length of the bridged taps can be estimated by comparing through the use of differential evolution a measured frequency domain channel impulse response of the transmission line to a model of a transmission line that...
12/07/2004
6823302Real-time quality analyzer for voice and audio signals
A method for providing real-time perceptual quality measurements of an audio signal (12) in which a quality test signal, including an audio test signal, is received by equipment under test. Playback of a pre-stored representation of the audio signal is coarse...
11/23/2004
6819744System and circuitry for measuring echoes on subscriber loops
A system for performing broadband differential time domain measurement on a subscriber loop. The system comprises a waveform generator coupled to a sampling head. The sampling head includes positive and negative pulse generators each coupled to one of the lines of t...
11/16/2004
6782078System to pre-qualify copper subscriber loops for high bandwidth access service using subscriber voice signals
The system to pre-qualify copper subscriber loops for high bandwidth access service determines electrical characteristics of a subscriber line served by a central office switch from a location remote from said subscriber line absent a direct metallic connection excl...
08/24/2004
6775240System and methods for measuring quality of communications over packet networks
A communications quality measurement system for use with packet and other networks comprises a test signal transmitter, a test signal receiver, and a test signal analyzer. A test transmitter is used to produce a series of test signals selected or engineered for meas...
08/10/2004
6744854Detection of bridge taps by frequency domain reflectometry-based signal processing with precursor signal conditioning
A frequency domain reflectometry-based bridged tap detection system for a telecommunication wireline employs a prescribed filtering operator, such as a ‘best-fit’ curve filter or a piecewise high pass filter bank, upstream of a Fourier processing operator, to im...
06/01/2004
6738455Apparatus and method for testing subscriber lines and equipment
An apparatus and method for testing the connectivity of subscriber terminals more efficiently. A subscriber test controller controls a process of a subscriber test by sending related test parameters and identification data to identify a target subscriber to be teste...
05/18/2004
6721541Wireless telephone testing using an echo plug
An echo plug is plugged into a hands-free jack of a wireless telephone for testing purposes. A test signal is transmitted from a test system to the wireless telephone over a test call. In the echo plug, the test signal is looped back from a speaker connection to a m...
04/13/2004
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
6633628Apparatus and method for selecting a supported signal path for a transceiver
A method and apparatus for selecting a supported signal path for a transceiver in a communication system is provided. An exemplary embodiment of the apparatus includes a relay for selecting a first test signal path from a first signal path and a second si...
10/14/2003
6628621Multichannel-capable bit error rate test system
A bit error rate test (BERT) system is configured as a field programmable gate array that emulates multiple independent BERT generators. The BERT generators produce test frames containing test pattern codes associated with respectively different time divi...
09/30/2003
6614879Method and apparatus for intra-bundle signaling
A communications system includes first and second subscriber lines, a first device, and a second device. The first device has a first negotiation unit coupled to the first subscriber line. The second device has a second negotiation unit coupled to the sec...
09/02/2003
6594344Auto latency test tool
A system and method for measuring latency in voice communications is presented. In an exemplary embodiment, latency is measured by establishing a call between a first and a second telephony device, and measuring a latency between a signal originating at t...
07/15/2003
6584148System and method for testing digital subscriber lines
A system for testing a communication path for digital subscriber line (DSL) signals includes a loop management device coupled in the communication path between a DSL access multiplexer (DSLAM) and a DSL modem located at a customer premises. The system als...
06/24/2003
6574310Apparatus and method for a wide band spectral balance measurement
A method and apparatus for testing telephone equipment for longitudinal balance. A signal generating circuit places a test signal at a certain frequency on the tip and ring wires of a telephone line. The telephone line is monitored and the signals on the ...
06/03/2003
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