Matches 1 - 44 out of 44


Match Document Document Title
7983331 Method to detect missing filter/splitter and apparatus for performing such a method  
A method to detect a defective or missing filter at a customer's side between a first connection having a first frequency spectrum and a second connection having a second frequency spectrum and...
7881463 Wireless digital subscriber line device having reduced RF interference  
A system and method for wireless DSL routing without signal interference is disclosed herein. The system includes a DSL interface, a WLAN interface, and a power system. The WLAN interface is...
7804954 Infrastructure for enabling high quality real-time audio  
Various technologies and techniques are disclosed that improve media communications. In one embodiment, a media server receives a media communication with a first quality from a personal computer...
7656807 Telecommunications transmissions test set  
A test set includes at least one signal input port, a test circuitry, a processor, a user-input device, and a display. The test circuitry couples to and receives signals from the at least one...
7593511 Method for training line drivers in a communication system  
A method for training line drivers in a communication system; each driver coupled with at least one communication line configured for communicating with subscriber equipment using at least one...
7103149 Optical transport concentrator audit system and method  
The present invention is a system and method that facilitates audits of network device (e.g., an optical network concentrator) characteristics and operations and presents results in a convenient...
6912269 Test unit for use at a network interface device  
A test unit provides testing capability at a network interface device (NID). The test unit may be remotely activated so that testing is initiated upon activation from a remote site. In one...
6904130 Test unit for interface between telephone company demarcation point device and customer's telephone system  
A test unit for determining whether a local telephone company demarcation point device is providing telecommunication signals to one of a plurality of telephone lines of a telephone system...
6891851 Method and apparatus for communicating maintenance messages and/or test messages of digital subscriber line services  
A subscriber's data circuit between channel bank and the customer premises carries fractional T1 bandwidth on a digital subscriber line (DSL) circuit. For example, for an ISDN rate digital...
6847702 Systems and methods for enhanced reliability in a communication system  
Disclosed are systems and methods for transferring data between servers and subscribers. A central office employs DSL circuit cards. Each DSL circuit card encodes a digital signal using a discreet...
6819745 Method and apparatus of testing a POTS circuit and DSL circuit through a splitter  
A simple means is provided to test the cross connect wiring of a communications system which uses a POTS splitter to separate broadband and narrow band signals. A suitable frequency test signal...
6704324 Apparatus and method for transmission of voice band signals over a DSL line  
Apparatus and method for providing simultaneously multiple telephone-type services to any/all POTS-type devices on a single wire pair at a user premises. The present invention provides for the...
6683951 Method and apparatus for providing service to VODSL derived telephone lines during power interruptions  
An apparatus and method for maintaining access to lifeline services through telephone sets provided with telephone service from a voice over digital subscriber loop (VoDSL) transceiver during power...
6665085 Simultaneous voice and data communication for diagnostic procedures in a printing or copying machine  
A system for conveying diagnostic data from a machine, such as a digital copier or printer, to a remote specialist allows simultaneous transfer of diagnostic data and live voice data through the...
6587544 Method for measuring a load impedance  
Method for measuring a load impedance (ZL) of a load circuit which is connected to an SLIC circuit (6) of an analog terminal connection of a terminal device, having the following steps:...
6549610 Subscriber circuit having splitter disconnection function  
A subscriber circuit allowing a reliable and proper subscriber line test is disclosed. The subscriber circuit includes a splitter and a feeder for feeding a current to subscriber equipment through...
6535581 Bypass for telephone system splitter  
In a telephone communication system employing a lower spectral band and a higher spectral band for communication of voice and video, wherein the system includes a first line for carrying signals at...
6504906 Telephone micro-tester and transport system  
A telephone micro-tester and transport system for testing smaller remote SLC customer's lines and terminal equipment is provided. A micro-tester is located at a remote terminal for measuring and...
6470073 Service state administration for a communications apparatus  
A communications system includes a switch having communications resources such as cards containing multiple devices, each containing multiple ports. The switch also contains an administrative agent...
6453016 Method and apparatus for detecting and locating a fault in a telecommunications environment  
The invention presented herein is directed to a remotely addressable maintenance unit (RAMU) working in conjunction with a test head at the central office for detecting and locating faults in...
6400802 Method and apparatus for performing transmission line testing  
A method and apparatus for testing and measuring transmission line parameters, such as the post-dial delay, the line rate, the noise level and the signal level, among others. The method comprises...
6343114 Remotely addressable maintenance unit  
The invention presented herein is directed to a remotely addressable maintenance unit (RAMU) working in conjunction with a test head at the central office for detecting and locating faults in...
6278769 Signaling method for invoking a test mode in a network interface unit  
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...
6246749 Network interface unit and module  
A network interface module 50 is provided for mounting in a network interface unit 31. The module 50 is located in an accessible subscriber section 34. A circuit board 44 is located in a...
6091950 System and method for the control of a cellular radiocommunications network by means of a set of protocol analyzers and mobile stations  
A system and method control a cellular radiocommunications network, in particular according to the GSM standard. The system of control includes fixed means for the recording and time-stamping of...
6091803 Architecture for robust voice CTI  
A computer controlled telephone apparatus comprised of a processor controlled telephone set, apparatus for interfacing the telephone set to a telephone network, a computer for interfacing the...
5999593 System and method for automatic PBX detection  
In a telephone network including a PBX connected between a central/public office switch and one or more terminals where a computer telephony interface is connected to the PBX, a system operatively...
5848127 Two-wire channel unit with loopback test capability  
A two-wire channel unit or line card for use in a digital loop carrier (DLC) telephone system is disclosed. The channel unit is provided with a loopback test capability by using relays to...
5838766 System and method for providing shared resources to test platforms  
A test system for testing a plurality of switches. A test platform requests the resources required for performing a test. A central configuration queue manager (CQM) determines whether the...
5805668 Electronic switching system for testing the status of subscriber components contained therein  
A novel system includes a first interfacing unit connected to a sending subscriber for converting analog subscriber information transmitted from the sending subscriber via a first subscriber line...
5761273 Analog self-test circuitry for a trunk interface  
An integrated circuit is provided for a trunk interface which can test a trunk interface card. Switching circuitry couples tip and ring leads to signal detection circuitry which detects the typical...
5734696 Testing telecommunications equipment  
A system for testing telecommunications equipment located at two sites includes a set of test instruments located at each site, a local test controller located at each site for controlling the test...
5712898 D4 channel bank with multi-mode formatted, performance-monitoring communication bus  
A performance monitoring arrangement conducts auxiliary in-band communications between a line interface unit and one or more channel units of a D4 channel bank without interrupting transmission of...
5579368 Device for monitoring a switch  
A switch sentry device (22) having a digital telephony switch (SCX, 16), a device (24) for processing information, a device (24, 34) for simulating a call from the processing device (24) to the...
5406564 Communication line backup system  
A communication line backup system provides a backup line for backing up a communication line which connects first and second subscriber terminals. The communication line backup system includes a...
5394458 System for the remote monitoring of a reproduction apparatus  
A reproduction apparatus includes a communication interface having an RS-232 interface and a modem, thereby permitting both on-site and remote communication with a diagnostic and administrative...
5343461 Full duplex digital transmission facility loop-back test, diagnostics and maintenance system  
A full duplex digital transmission, high-capacity digital, facility loop-back test, diagnostics and maintenance system having a digital transmission facility, transmission medium, and at least one...
5274692 Method for testing the line connection before switching from a telephone switching center to be placed out of service to a new digital telephone switching center to be placed into service  
Given simultaneous connection of the subscriber line circuits by way of a main distributor to a new switching center and to an existing or old switching center, the subscriber terminals are...
5208846 Subscriber loop tester for telephone switching systems  
A subscriber loop tester for testing local loops of telephone switching networks has a partitioned "U" interface and an internal bus architecture for converting various transceiver circuit output...
5187733 Verification of subscriber lines prior to cutover to a new switching system  
The present invention addresses an improved solution to the problem of cutover verification testing where a new digital switching system is to replace an existing switching system that serves at...
5063563 Communication terminal having means for controlling power transfer  
A communication terminal is coupled to a communication network via transmitting and receiving signal lines and a switching system. The communication terminal includes a power input line coupled to...
4945554 Test circuit arrangement for computer-controlled communications switching systems  
A test circuit arrangement for testing computer-controlled communications switching systems each having a central network and a central processor unit, as well as subscriber sets and/or line sets...
4516076 Fault detection arrangement for relay switching system  
An arrangement for detecting faults in automatic test systems of the type wherein test points in a unit under test are connected to test instruments by the programmed closure of electromechanical...
4430530 Telephony system with automatic test call generator for remote port groups  
A telephony network with a digital central office and one or more remotely located digital satellite units. Each digital satellite unit connects to a number of remote subscriber lines and monitors...
Matches 1 - 44 out of 44