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Class Information
Number: 379/27.01
Name: Telephonic communications > Diagnostic testing, malfunction indication, or electrical condition measurement > Testing of subscriber loop or terminal
Description: Subject matter for evaluating, measuring, or monitoring a characteristic of a subscriber line or station.

Sub-classes under this class:

Class Number Class Name Patents
379/27.03 By analysis of testing signal 147
379/27.04 By automatic testing sequence (e.g., programmable, test, script or test call generation program) 85
379/27.02 By generating call signal 75
379/27.06 Having electromechanical switch or relay 104
379/27.07 Having plugging maintenance or test module 56
379/27.05 Having protection circuit (e.g., surge or short circuit protector) 37
379/27.08 Including sampling measurement technique 73
379/30 Loop impedance (e.g., resistance, capacitance) 171
379/28 Of data transmission instrument 114
379/31 Of line signalling generator (e.g., dial, tone code generator) 58
379/29.01 Terminal arrangement to enable remote testing (e.g., testing interface) 317

Patents under this class:
1 2 3 4 5 6 7 8 9

Patent Number Title Of Patent Date Issued
8712018 Testing apparatus and testing method for telephone apparatus Apr. 29, 2014
8687680 Systems and methods for loop length and bridged tap length determination of a transmission line Apr. 1, 2014
8675638 Method and apparatus for enabling dual tone multi-frequency signal processing in the core voice over internet protocol network Mar. 18, 2014
8660138 Methods, apparatus and articles of manufacture to allocate ports to vectored digital subscriber line (DSL) groups Feb. 25, 2014
8649737 Mobile communication terminal test system, analysis method, and analysis program Feb. 11, 2014
8644169 Methods and apparatus to perform line testing at customer premises Feb. 4, 2014
8644456 Improper connection determination method and communication apparatus Feb. 4, 2014
8599704 Assessing gateway quality using audio systems Dec. 3, 2013
8594278 Test system for voice communications systems Nov. 26, 2013
8588285 Method and apparatus for operating a digital subscriber line arrangement Nov. 19, 2013
8576898 SLOC spot monitoring Nov. 5, 2013
8553751 Radio equipment controller, radio control method, radio station, and radio communication system Oct. 8, 2013
8553750 Systems and methods for loop length and bridged tap length determination of a transmission line Oct. 8, 2013
8514920 Methods and apparatus for pseudo asynchronous testing of receive path in serializer/deserializer devices Aug. 20, 2013
8488746 Method and system for silent trunk failure detection Jul. 16, 2013
8483309 Method, arrangement and device for transmitting information between a central unit and at least one decentralized unit in a communication network Jul. 9, 2013
8463259 Servicing cell discovery during out of service Jun. 11, 2013
8457181 Rate agile rate-adaptive digital subscriber line Jun. 4, 2013
8451979 System for correlating a subscriber unit with a particular subscriber in a passive optical network May. 28, 2013
8401152 Method and system for performing EMTA loop diagnostics Mar. 19, 2013
8369394 Systems and methods for loop length and bridged tap length determination of a transmission line Feb. 5, 2013
8363557 Methods, systems, and computer readable media for remotely evaluating and controlling voice over IP (VoIP) subscriber terminal equipment Jan. 29, 2013
8358743 Method and device for determining the leakage resistance of at least one wire of a subscriber line having a number of wires in a communication network Jan. 22, 2013
8331537 Method and system for managing line topology Dec. 11, 2012
8331430 Channel diagnostic systems and methods Dec. 11, 2012
8295444 Systems and methods for performing loop analysis based on un-calibrated single-ended line testing Oct. 23, 2012
8275025 Methods and apparatus for pseudo asynchronous testing of receive path in serializer/deserializer devices Sep. 25, 2012
8265232 Estimation of transmission line insertion loss Sep. 11, 2012
8259907 System and method for assisting field communications technicians in repairing communications lines Sep. 4, 2012
8259917 System and method for generating one-way speech signal samples Sep. 4, 2012
8254527 Method and arrangement for loop qualification in a digital subscriber line (DSL) system Aug. 28, 2012
8249221 Access apparatus and method for digital subscriber line test Aug. 21, 2012
8238834 Diagnostic structure for wireless networks Aug. 7, 2012
8223958 Determining an active line Jul. 17, 2012
8180023 Method and apparatus for replacement connection verification during migration from an analog network element to a next generation network element May. 15, 2012
8175223 Intelligent self-healing networks and advanced troubleshooting of communication service problems May. 8, 2012
8165272 Automated dial tone verification and reporting Apr. 24, 2012
8094703 Systems and methods for loop length and bridged tap length determination of a transmission line Jan. 10, 2012
8090079 System and method for auto-reversing loop polarity of U interface Jan. 3, 2012
8089885 Technique for providing selective access to network node Jan. 3, 2012
8068585 Checking of broadband network components Nov. 29, 2011
8059788 Telephone software testing system and method Nov. 15, 2011
8041009 Wired transmission line testing method Oct. 18, 2011
8031841 Method and apparatus for automated asymmetric digital subscriber line loop testing Oct. 4, 2011
RE42789 Method for testing a communication channel Oct. 4, 2011
8005132 Non-intrusive modem performance analysis Aug. 23, 2011
8000459 System and method for a wireless meta service Aug. 16, 2011
7991015 Line terminal for determining operational status of a U interface Aug. 2, 2011
7907720 Test method for line equipment including a hybrid circuit and line equipment for its implementation Mar. 15, 2011
7903790 System and method for completing incomplete records in a database of twisted cable pair information Mar. 8, 2011

1 2 3 4 5 6 7 8 9

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