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| Number | Title | Issue Date |
| 8160209 | IVR call routing testing A call routing test and verification system for an interactive voice response (IVR) system including an automated test driver (ATD) for connecting to a IVR system over a public switched telephone network (PSTN) configured to provide signals representative of content... | 04/17/2012 |
| 8054947 | Apparatus and method for multiplexing communication signals In a PBX environment, a middleware module abstracts communication cards so that the plurality of channels associated therewith are grouped for efficiency. The middleware module recognizes unoperational channels, and restarts the hardware associated with the channels... | 11/08/2011 |
| 7362841 | Digital access arrangement circuitry and method for connecting to phone lines having a DC holding circuit with switchable DC termination impedance A digital direct access arrangement (DAA) circuitry may be used to terminate the telephone connections at the user's end that provides a communication path for signals to and from the phone lines. Briefly described, the DAA provides a programmable means for the DC t... | 04/22/2008 |
| 7336770 | Method and apparatus for telephone line testing A method and apparatus for qualifying a telephone transmission line for XDSL communication services is disclosed. The system includes a modem, located at the customer premises to be connected. The modem analyzes actual signals to determine the electrical characteris... | 02/26/2008 |
| 7330502 | Input/output circuit and semiconductor integrated circuit An input/output circuit includes a reference clock generator configured to generate a reference clock. A signal transmitter is configured to transmit serial data in synchronization with one of the reference clock and a test clock. A signal-receiving circuit is confi... | 02/12/2008 |
| 7304957 | Methods and systems for simultaneous, multi-channel link fault sectionalization testing Method and systems for simultaneously performing link fault sectionalization (LFS) tests for multiple time division multiplexed (TDM) channels are disclosed. An LFS test state machine may simultaneously process test data for multiple TDM channels by receiving test d... | 12/04/2007 |
| 7277700 | System and method for emulating a telephony driver A system and method for emulating a telephone driver of a mobile device to assist in the development and testing of mobile telephony applications is described. An emulated telephony driver maintains internal states of a wireless network and characteristics of the mo... | 10/02/2007 |
| 7263176 | Diagnostic checking of an inter-messaging network One preferred embodiment of the present invention provides a system and method for checking the performance of sub-systems in an inter-messaging network of voice mail systems. This preferred embodiment includes a network diagnostic device that connects to the inter-... | 08/28/2007 |
| 7221938 | System and method for multi-modal monitoring of a network A system and method for multi-modal monitoring of a network are disclosed. In one embodiment of a system incorporating teachings of the present disclosure, a network management engine may be capable of issuing a request to a monitored network device and to receive n... | 05/22/2007 |
| 7180999 | Subscriber line interface circuitry Subscriber line interface circuitry includes an integrated circuit having sense inputs for a sensed tip signal and a sensed ring signal of a subscriber loop. The integrated circuit generates a subscriber loop linefeed driver control signal in response to the sensed ... | 02/20/2007 |
| 7116637 | System and method for diagnosing a POTS port A method for diagnosing Voice-over-Broadband circuitry including an Integrated Access Device. The method includes receiving a request to initiate diagnosis, pulsing source voltages of tip and ring amplifiers in the circuitry, aggregating signal line noise resulting ... | 10/03/2006 |
| 7096012 | System and method for emulating a telephony driver A system and method for emulating a telephone driver of a mobile device to assist in the development and testing of mobile telephony applications is described. An emulated telephony driver maintains internal states of a wireless network and characteristics of the mo... | 08/22/2006 |
| 7079555 | Integrated digital loop carrier system with virtual tributary mapper circuit An integrated digital loop carrier (IDLC) system includes digital line feeders and signal processors to interface with the feeders an to ultimately provide data to subscriber instruments. The system can be employed as a central office terminal (COT) or remote digita... | 07/18/2006 |
| 7046755 | Digital access arrangement circuitry and method for connecting to phone lines having a DC holding circuit with switchable time constants A digital direct access arrangement (DAA) circuitry may be used to terminate the telephone connections at the user's end that provides a communication path for signals to and from the phone lines. Briefly described, the DAA provides a programmable means for the DC t... | 05/16/2006 |
| 7031435 | Method and apparatus for simultaneous line-interface wiring collision detection A method uses circuitry in a data interface that provides telephony service over a high-speed network to detect the presence of a secondary source of VBH battery voltage on a tip-ring system. If a detected source other than the data interface is impressing battery v... | 04/18/2006 |
| 7027589 | Single-ended loop test circuitry in a central office DSL modem A central office modem (50) that includes the capability of single-ended loop testing (SELT) is disclosed. The modem (50) includes a digital signal processor (54), a codec (56), line driver and receiver circuitry (58), and a hybrid... | 04/11/2006 |
| 7020248 | Apparatus and method for testing subscriber loop interface circuits A method and apparatus for internally testing portions of a subscriber loop interface circuit. Testing may be conducted on a semiconductor circuit including the subscriber loop interface circuit. The portion of the subscriber loop interface circuit being tested may ... | 03/28/2006 |
| 7003078 | Method and apparatus for telephone line testing A method and apparatus for qualifying a telephone transmission line for XDSL communication services is disclosed. The system includes a modem, located at the customer premises to be connected. The modem analyzes actual signals to determine the electrical characteris... | 02/21/2006 |
| 6934384 | Subscriber line interface circuitry A subscriber line interface circuit apparatus includes a signal processor having sense inputs for sensed tip and ring signals of a subscriber loop. The signal processor generates linefeed driver control signals in response to the sensed signals. The signal processor... | 08/23/2005 |
| 6870903 | Method and apparatus for self-testing a customer services terminal and for loop testing telephone lines that are connected thereto A telecommunications system includes a telephone exchange and a customer services terminal whose input is connected to the telephone exchange, and whose plural outputs are individually connected to one of a plurality of telephone lines. A plurality of interface circ... | 03/22/2005 |
| 6870902 | Customer services terminal method and apparatus for testing a plurality of interface circuits and telephone lines that are connected thereto Customer services terminal input connected between telephone exchange and outputs. Interface circuits provide service between input and outputs Test means applies test conditions to interface circuits and/or to outputs associated with the interface circuits, and/or ... | 03/22/2005 |
| 6856672 | Graphic user interface method and apparatus for testing a customer services terminal and a plurality of telephone lines that are connected thereto A telecommunications system includes a customer services terminal that is connected intermediate a telephone exchange and a user location that has a plurality of telephone lines. The customer services terminal and/or the telephone lines are tested by providing a web... | 02/15/2005 |
| 6766164 | System and method for providing radio frequency conditions for testing wireless communications equipment An apparatus and a method for recreating radio frequency (RF) conditions of a cellular network extracts significant RF effects from field test data, and recreates variable RF attenuation using a multi-channel attenuator. A field data processor converts the field tes... | 07/20/2004 |
| 6754310 | Telephony interface device for providing diagnostic information to a telephone An apparatus for providing diagnostic information to at least one telephone includes a telephony interface device operatively coupled to at least one telephone through a telephone line. The telephony interface device is operatively coupled to a network. The telephon... | 06/22/2004 |
| 6580782 | Interactive telephone response module A system and method for testing a telephone connection using an interactive telephone response module (ITRM). In one embodiment, the ITRM is connected between the handset and station set of a telephone terminating one end of the connection to be tested. I... | 06/17/2003 |
| 6574333 | State machine based universal voice grade cards A fiber to the curb communication system providing telephone service to subscribers using line cards which are pluggable into a broadband network unit. The line cards provide telephone service to up to six lines per card. The cards are programmable from a... | 06/03/2003 |
| 6519322 | Apparatus and method for testing subscriber loop interface circuits A method and apparatus for internally testing portions of a subscriber loop interface circuit. Testing may be conducted on a semiconductor circuit including the subscriber loop interface circuit. The portion of the subscriber loop interface circuit being ... | 02/11/2003 |
| 6507737 | Method for automatically monitoring continuity and integrity of communication trunks Method for automatically determining whether a communication trunk is operating properly without having to take the trunk out of service and without the need of a craftsperson to initiate the testing of the communication trunk. The communication trunk is ... | 01/14/2003 |
| 6427011 | Modem data access arrangement without diode bridge Computers commonly connect to remote computers and networks using the telephone lines. A telephone line is composed of a positive line (Ring) and a negative line (Tip). Because there is no guarantee, in general, which line on a two-conductor telephone jac... | 07/30/2002 |
| 6421323 | Method and apparatus for analyzing events in a telecommunications system A method and apparatus for automated sectionalization of a DS1/DS3 data path based upon information received at a single location along the path. A test and monitor device is located at a point of demarcation between an LEC and an IEC. A Remote Module is ... | 07/16/2002 |
| 6417672 | Detection of bridge tap using frequency domain analysis A method for detecting the presence of a bridge tap and other types of fault in a transmission line. Initially, test signals of predetermined frequencies are transmitted into a transmitting end of the transmission line. The test signals are received at a ... | 07/09/2002 |
| 6393103 | Method and apparatus for emulating telephone services A method and apparatus for simulating telephony services and providing information about telephony services and products without the use of a public carrier telephone system. The system includes at least one Telephone Interface (TI), connected between a t... | 05/21/2002 |
| 6373924 | Digital key telephone system and extension terminal device thereof According to this invention, a digital key telephone system connected to an analog public network NW having a function of transmitting a ringing signal including identification information of a calling line through a subscriber line (CO line), accommodati... | 04/16/2002 |
| 6181775 | Dual test mode network interface unit for remote testing of transmission line and customer equipment A network interface device intended to be placed approximate to the customers equipment and remote from a central office of a telephone company ("TELCO"). The purpose of the network interface device is to allow the twisted pair transmission line between t... | 01/30/2001 |
| 6125107 | Dual-band RF test interface circuit A test equipment interface circuit capable of acting as an interface between a wireless transceiver and a piece of test equipment for both high frequency band signals and low frequency band signals without the use of active or mechanical switches.... | 09/26/2000 |
| 6081509 | Simulator for multiple network interface units A special network interface unit (NIU) for a communication system, called a super NIU, simulates operations of multiple NIUs, called virtual NIUs, for such purposes as testing other components of the communication system. The super NIU has a real (i.e., a... | 06/27/2000 |
| 6014425 | Apparatus and method for qualifying telephones and other attached equipment for optimum DSL operation Apparatus and method are provided for qualifying POTS devices for optimum operation that involve measurements and analysis of the POTS device's impedance over the modem spectrum, noise emanations, and non-linear distortion. The apparatus includes a test p... | 01/11/2000 |
| 5889837 | Testing a subscriber terminal of a wireless telecommunications system A subscriber station provides the wireless connection of user telecommunications equipment to a remote central station of a wireless telecommunications system. The subscriber station includes a transmitter/receiver for wireless communication with a centra... | 03/30/1999 |
| 5881129 | Self-monitoring line interface circuit A line circuit whose circuit components are selectively controllable by a microprocessor/DSP to provide normal BORSCHT functions or to be selectively tested without need for an electromechanical relay to isolate the line circuit from the loop conductors. ... | 03/09/1999 |
| 5875398 | Method and apparatus for testing cellular services in a first location from a second location remote from the first location A remote automated cellular test set can be disposed in a first location and accessed via a communication network from a second location that is remote from the first location. The access to the test set can be by a technician's terminal which can remotel... | 02/23/1999 |
