Matches 1 - 50 out of 77 1 2 >


Match Document Document Title
7596112 Method and apparatus for rate compatible dirty paper coding  
A medium access control (MAC) entity first computes an achievable rate region based on a total transmit power limit and a channel gain of each of a plurality of WTRUs. Next, the MAC entity selects...
7590222 Techniques 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...
7587028 Method and apparatus for generating and playing diagnostic messages indicative of MTA provisioning status  
A method and an apparatus, which generates and plays diagnostic messages indicative of a media terminal adaptor provisioning status. The media terminal adaptor detects errors in its provisioning...
7319863 Method 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...
7181004 Direct 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...
6813340 Ringing 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...
6711238 Parallel-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...
6707886 Method 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...
6693992 Line 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...
6466650 Telecom 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...
6377663 Call 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...
6298119 System 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...
6263047 Apparatus 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...
6253069 Methods 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...
6233312 Inter-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...
6154447 Methods 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...
6128370 Multiple tone detection using out-of-band background detector  
A multiple tone detector includes n tone detectors, each detecting one of n distinct tones, where n≥2, and a background detector which generates a measure of accumulative background energy Eavg i...
5995557 Tone 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...
5937030 Off-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...
5881146 Method 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...
5818904 Collaborative 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...
5809111 Telephone 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)....
5787147 Test 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...
5781611 Method 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...
5570418 Device 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...
5561700 Device 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...
5528663 DTMF 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...
5528661 Diagnostic mechanism for monitoring operational status of remote monitoring and test unit which controllably test and conditions subscriber line circuits  
A self diagnostic test routine resident in firmware in a remote, programmable device for testing telephone lines diagnostically examines the operational capability of each of a plurality of...
5452339 Local/remote modification of electronically alterable operating system firmware resident in redundant flash memory of remote unit for testing/conditioning subscriber line circuits  
A remote measurement unit for testing and conditioning one or more telephone lines includes multiple electronically erasable flash memory banks, which contain respective versions of the operating...
5440609 Telephone tester junction box  
A junction box for coupling alligator test clips to a modular telephone line. The device includes a housing having a plurality of contacts to which each alligator clip of a telephone testing...
5359646 Testing of distributed communications networks  
A system and method for testing subscriber's services and sectionalizing service trouble in distributed networks, such as Advanced Intelligent Network (AIN), includes a test call set-up component,...
5357557 Inter-mobile-terminal testing method in cellular automobile telephone system  
In an inter-mobile-terminal testing method in a cellular automobile telephone system, test sequence information indicating a test sequence, next terminal number information indicating a terminal...
5357556 System and method for telephone network testing  
A system and method for testing equipment in a telephone network is disclosed for remote maintenance and verification of subscriber loops. The system and method accommodates known AC and DC fault...
5307398 Remote controlled tone generator system  
A remote controlled tone generator system is provided that permits a telephone technician to remotely control the operating mode of a test tone generator. This allows the technician to install the...
4777645 Telephone line test and display circuit  
A telephone line test and display circuit for enabling a craftsperson to automatically monitor a plurality of communication aspects of a telephone line without impacting any communications that may...
4656319 Alarm system tester  
A novel alarm system tester is disclosed for use in verifying the operation of subscriber stations in an alarm system of a type having a central monitoring station and a plurality of subscriber...
4602134 Telephone tester  
A software-controlled telephone tester permits untrained consumers to test telephone sets by connecting the line cord to the tester and following simple instructions which are sequentially...
4580016 Method and apparatus for checking the integrity of a communications channel in a voice store and forward system  
Method and apparatus for determining the integrity of a communications channel includes a first communications system connected to a communications channel with a receiving communications system...
4577072 Telephone equipment tester  
A tester for telephones and telephone answering systems features a dialing test capability for high speed dialing systems by providing the dialed digits in a single display element serially in time...
4398147 Methods of testing multifrequency dialing signals  
A predetermined sequence of multifrequency signals are fed to a multifrequency dialing board (24) and are separated into their component signals by high and low filter circuits (50 and 52). The...
4361730 Security terminal for use with two-way interactive cable system  
A security terminal for use with a two-way interactive cable system. The security terminal develops alarm and supervisory signals, and controls their transmission over the cable when polled by a...
4255623 Apparatus for pulse train measurement  
An incoming pulse train is evaluated for interpulse spacing and pulse repetition rate by first shaping the pulses into a desired configuration in a dial pulse shaper (12). The shaped pulses are...
4218589 Method and apparatus for testing tone generators  
Apparatus and methods for testing digital tone generators in a digital time division, multiplex telecommunications switching system. The tone generator produces both continuous and interrupted...
4119808 Multi-frequency receiver circuits  
A receiver circuit for a multi-frequency telephone dialling system has means for validating a received tone by making successive measurements of the tone period and validating the tone when m of n...
4095058 Telephone switching system test set  
A test apparatus for forward selector switches in a telephone switching system having a telephone loop. Means detects a preselected operative condition in such telephone systems. Means generates a...
3997740 Pulse train analyzer  
A pulse train analyzer utilizing digital clock frequencies corresponding to the minima and maxima of the acceptable performance ranges provides a pass-fail visual indication depending upon whether...
3708792 METER CIRCUIT FOR MEASURING THE MAKE-TO-BREAK RATIO OF PULSES  
A meter is calibrated to provide a direct reading of the ratio between the make portion and break portion of pulses in a telephone switching system as determined by measurement of the voltage...
3684832 ACOUSTICAL DATA SET/TERMINAL TESTER  
A device for monitoring, recording, interfacing, and otherwise processing data in FSK or bilevel DC form including interfaces for telephone handsets, business machines, and teletype terminals, a...
3674947 REMOTE TESTING SYSTEM FOR COMMUNICATION CIRCUITS  
A connection to a test trunk circuit and associated test circuit at an outlying central office is dialed from a test center, eliciting a short reply tone pulse as a signal to restore local circuits...
3627932 TEST MEANS FOR TELEPHONE SWITCHING SYSTEMS  
A compact, lightweight and portable set for testing trunk wiring in telephone step-by-step switching systems, comprising means allowing rapid detection of circuit malfunctions, means to indicate...
Matches 1 - 50 out of 77 1 2 >