ClassID:

227548

H04M3/18 - CPC Classification

Classification description:

Automatic or semi-automatic exchanges with means for reducing interference or noise ; with means for reducing effects due to line faults with means for protecting lines

Recent Application in this class:
#1
20250131936
2025-04-24

RECEIVE-SIDE AUDIO PROCESSING FOR CALLS IN A WEB CONFERENCING CLIENT

#2
20240348719
2024-10-17

AUDIO ADJUSTMENT BASED ON COLOCATION OF USERS

#3
20230412727
2023-12-21

Adjusting transmit audio at near-end device based on background noise at far-end device

#4
20230208965
2023-06-29

Quad TVS protection circuit for an electronic DSL component

#5
20220094779
2022-03-24

Quad TVS protection circuit for an electronic DSL component

#6
20210344798
2021-11-04

INSURANCE INFORMATION SYSTEMS

#7
20210297526
2021-09-23

Cable Pair Stabilizer Unit and Method and System for Generating Sealing Current

#8
20210250392
2021-08-12

SYSTEM AND METHOD FOR MULTI-PARTY COMMUNICATION

#9
20210250391
2021-08-12

SYSTEM AND METHOD FOR MULTI-PARTY COMMUNICATION OF TRENDING TOPICS

#10
20200294523
2020-09-17

System and Method for Network Bandwidth Management for Adjusting Audio Quality

#11
20200194025
2020-06-18

Electronic device for supporting audio enhancement and method for the same

#12
20200005813
2020-01-02

Desired signal spotting in noisy, flawed environments

#13
20190379784
2019-12-12

Cable pair stabilizer unit and method and system for generating sealing current

#14
20190075202
2019-03-07

Effective crosstalk estimation in presence of clipping errors

#15
20180190256
2018-07-05

Hum reduction circuit and method

#16
20180109289
2018-04-19

Digital subscriber line interference measurements and power line communication beamforming optimization

#17
20180109288
2018-04-19

Power line communication interference probing and measurement on digital subscriber lines

#18
20180069958
2018-03-08

Systems, non-transitory computer-readable media and methods for voice quality enhancement

#19
20170353510
2017-12-07

System and method for multi-party communication of trending topics

#20
20170318150
2017-11-02

Method and device for controlling a vector processor

#21
20170236527
2017-08-17

System and method for network bandwidth management for adjusting audio quality

#22
20170223072
2017-08-03

System and method for multi-party communication

#23
20170194787
2017-07-06

Redundant solution of outputs on a RC voltage divider

#24
20170019526
2017-01-19

Protection of a telephone line against overvoltages

#25
20160365999
2016-12-15

METHOD AND APPARATUS FOR CANCELLING IMPULSE NOISE IN DSL SYSTEMS

#26
20160323454
2016-11-03

Matching reverberation in teleconferencing environments

#27
20160308347
2016-10-20

Protection module and decoupling component thereof for symmetrical twisted pairs

#28
20160261736
2016-09-08

Communication module

#29
20160198038
2016-07-07

Cable pair stabilizer unit and method and system for generating sealing current

#30
20160173682
2016-06-16

Systems and methods for determining non-linear precoding coefficients

#31
20160065729
2016-03-03

DUAL-SOURCE HYBRID CANCELLATION SCHEME

#32
20160065728
2016-03-03

Network interface devices having external demarcation points

#33
20150341487
2015-11-26

Mitigation of disconnect events in vectoring based DSL systems

#34
20150270924
2015-09-24

Method and apparatus for improving performance of transmit controlled adaptive modulation in xDSL and G.fast systems

#35
20150207842
2015-07-23

Method for concatenating frames in communication system

#36
20150172454
2015-06-18

Method for metadata-based collaborative voice processing for voice communication

#37
20150155914
2015-06-04

Method and device for determining a parameter that characterizes a number of spare positions to be used for cancelling the crosstalk of lines joining a digital subscriber line vectoring group

#38
20150155913
2015-06-04

Method and arrangement in a DSL vectoring system

#39
20150149159
2015-05-28

System and method for network bandwidth management for adjusting audio quality

#40
20150146336
2015-05-28

Surge protector for a transmission line connector

#41
20150092950
2015-04-02

Matching reverberation in teleconferencing environments

#42
20150086005
2015-03-26

Audio signal processing in a communication system

#43
20150022623
2015-01-22

SOURCE SELECTION FOR CONFERENCE BRIDGES

#44
20140226806
2014-08-14

Methods and apparatus for enhancing ringback tone quality during telephone communications

#45
20140185659
2014-07-03

Communication system capable of measuring crosstalk in legacy line

#46
20140140493
2014-05-22

Source selection for conference bridges

#47
20140036400
2014-02-06

Protection circuit of power over ethernet port and ethernet power-sourcing equipment

#48
20130343537
2013-12-26

Frame injected DSL via face fed protector module

#49
20130336463
2013-12-19

System and method for optimizing termination impedance for an analog telephone line

#50
20130321970
2013-12-05

Surge protector

#51
20130321964
2013-12-05

Surge protector

#52
20130262884
2013-10-03

Low-Frequency Noise Interference Prevention in Power Over Ethernet Systems

#53
20130215935
2013-08-22

Methods and systems for reducing crosstalk

#54
20130177150
2013-07-11

Crosstalk reducing conductor and contact configuration in a communication system

#55
20130143618
2013-06-06

Communication device with reduced noise speech coding

#56
20130083909
2013-04-04

Gain control enhancement for modulated communications

#57
20130060567
2013-03-07

Voice recognition improved accuracy in mobile environments

#58
20130039481
2013-02-14

System and method for powering redundant components

#59
20130029594
2013-01-31

Excessive-signal prevention apparatus and method therefor

#60
20130028404
2013-01-31

Audio conference platform with dynamic speech detection threshold

#61
20130027055
2013-01-31

Communication line testing with protective devices in place

#62
20120320959
2012-12-20

Method and arrangement in a DSL vectoring system

#63
20120310634
2012-12-06

Communication device with reduced noise speech coding

#64
20120287923
2012-11-15

Residential gateway for voice over internet protocol communications

#65
20120269100
2012-10-25

Forced hold call handling in a VoP environment

#66
20120250491
2012-10-04

Systems and methods for adjusting time slots of vectoring streams based on bit loading

#67
20120250490
2012-10-04

Systems and methods for bypassing failed line cards in multi-card vectoring groups

#68
20120243404
2012-09-27

Systems and methods for communicating vectoring streams in multi-card vectoring groups

#69
20120224683
2012-09-06

Systems and methods selectively excluding tones from vectoring

#70
20120224674
2012-09-06

Systems and methods for handling crosstalk vectoring failures in multi-card vectoring groups

#71
20120188677
2012-07-26

DSL protection circuit

#72
20120176717
2012-07-12

CATEGORY 6A SURGE PROTECTOR

#73
20120158163
2012-06-21

Method For Generating Concealment Frames In Communication System

#74
20120082258
2012-04-05

Channel estimation utilizing control signals transmitted by an activating line during initialization

#75
20120069990
2012-03-22

Shared protection scheme for multiple variable batteries

#76
20120014514
2012-01-19

Method of indicating presence of transient noise in a call and apparatus thereof

#77
20110299204
2011-12-08

Anti-lightning protection for telephone connection

#78
20110286323
2011-11-24

Device and system for protection switching

#79
20110280387
2011-11-17

Method and system to manage connections on a conference bridge

#80
20110242713
2011-10-06

PLANAR VOLTAGE PROTECTION ASSEMBLY

#81
20110234745
2011-09-29

Source selection for conference bridges

#82
20110208518
2011-08-25

Method of editing a noise-database and computer device

#83
20110129005
2011-06-02

Near-end crosstalk noise minimization and power reduction for digital subscriber loops

#84
20110076968
2011-03-31

Communication device with reduced noise speech coding

#85
20110051926
2011-03-03

Overvoltage protection with power sink

#86
20110051925
2011-03-03

Method and apparatus for shared positive protection

#87
20110050413
2011-03-03

DUAL-WARNING PROTECTOR HAVING MULTIPLE PROTECTIONS

#88
20110026178
2011-02-03

Interface circuit and communication device

#89
20100278330
2010-11-04

Method and device for processing data and to a communication system comprising such device

#90
20100278329
2010-11-04

Port detection and protection circuit and electronic device using the same

#91
20100195816
2010-08-05

Method and device for a data processing and communication system comprising such device

#92
20100161086
2010-06-24

Method for generating concealment frames in communication system

#93
20100131270
2010-05-27

METHOD AND SYSTEM FOR REDUCING RECEPTION OF UNWANTED MESSAGES

#94
20100062719
2010-03-11

Managing the audio-signal loss plan of a telecommunications network

#95
20090296830
2009-12-03

Signal receiver for receiving differential signal via transmission line

#96
20090285203
2009-11-19

Forced hold call handling in a VoP environment

#97
20090268880
2009-10-29

System and method for generating one-way speech signal samples

#98
20090257430
2009-10-15

Method and system for preventing data loss in a real-time computer system

#99
20090245081
2009-10-01

Fast seamless joining of channels in a multi-channel communication system

#100
20090231768
2009-09-17

Protection circuit for a subscriber line interface circuit

#101
20090225979
2009-09-10

Crosstalk reducing conductor and contact configuration in a communication system

#102
20090168992
2009-07-02

Monolithic solid state relay circuit for telecom wireline applications

#103
20090154049
2009-06-18

Network equipment system providing surge protection and DC blocking bypass functionalities

#104
20090122977
2009-05-14

Systems and methods for a multicarrier transceiver with radio frequency interference reduction

#105
20090092243
2009-04-09

Protection Circuit and Method

#106
20090082478
2009-03-26

AZEOTROPE-LIKE COMPOSITIONS OF 1,1,1,3,3-PENTAFLUOROPROPANE AND HYDROCARBONS

#107
20090015434
2009-01-15

Enhanced AC immunity in ground fault detection

#108
20080275580
2008-11-06

Method for weighted overlap-add

#109
20080205609
2008-08-28

METHOD, SYSTEM AND APPARATUS FOR ADJUSTING THE TRANSMIT POWER OF THE DSL TRANSCEIVER

#110
20080154584
2008-06-26

Method for concatenating frames in communication system

#111
20080137258
2008-06-12

Method for operating a transmission line and correspondingly constructed device

#112
20080119240
2008-05-22

Method and system for informing a vehicle telematics user of a connection status

#113
20080101574
2008-05-01

Source selection for conference bridges

#114
20080049369
2008-02-28

Protection of a communication line

#115
20070286347
2007-12-13

Monitoring signal path quality in a conference call

#116
20070223165
2007-09-27

Line powering in a multi-line environment

#117
20070217099
2007-09-20

Enhanced AC immunity in ground fault detection

#118
20070191030
2007-08-16

Method and Apparatus for Enhancing Wireless Data Network Telephony Including a Personal Router in a Client

#119
20070154003
2007-07-05

Subscriber line common mode slew rate control

#120
20070116259
2007-05-24

Terminal block for adsl

#121
20070116257
2007-05-24

Sealing current terminator for inhibiting oxidation and methods therefor

#122
20070086137
2007-04-19

Linear low capacitance overvoltage protection circuit

#123
20070082519
2007-04-12

Telecommunications components having reduced alien crosstalk

#124
20070081657
2007-04-12

Methods and apparatus for enhancing ringback tone quality during telephone communications

#125
20070047729
2007-03-01

Subscriber Line Interface Circuit (SLIC) Including A Transient Output Current Limit Circuit And Related Method

#126
20070036207
2007-02-15

Near-end crosstalk noise minimization and power reduction for digital subscriber loops

#127
20060291457
2006-12-28

Cross-connected cable interconnection

#128
20060245565
2006-11-02

Classifying signals at a conference bridge

#129
20060233227
2006-10-19

SYSTEMS AND METHODS FOR A MULTI-CARRIER TRANSCEIVER WITH RADIO FREQUENCY INTERFERENCE REDUCTION

#130
20060221530
2006-10-05

Low voltage surge protectors with ground shield

#131
20060215343
2006-09-28

Method for improved ESD performance within power over ethernet devices

#132
20060164777
2006-07-27

Circuit arrangement for limiting a ringing current

#133
20060139831
2006-06-29

Electrical subassembly and use thereof

#134
20060098724
2006-05-11

Systems and methods for multicarrier transceiver with radio frequency interference reduction

#135
20060072730
2006-04-06

Systems and methods of changing attributes of voice calls over a circuit-based network

#136
20060044725
2006-03-02

Monolithic solid state relay circuit for telecom wireline applications

#137
20060029210
2006-02-09

Telephony distribution system

#138
20060002527
2006-01-05

Network telephone system and telephone terminal

#139
20050264969
2005-12-01

Integrated protector and splitter

#140
20050243496
2005-11-03

Protection devices and methods for preventing the flow of undesirable differential mode transients

#141
20050243483
2005-11-03

Differential electrical surge protection within a LAN magnetics interface circuit

#142
20050162801
2005-07-28

Overvoltage protecting circuit in a steady state

#143
20050111151
2005-05-26

Isolation circuit for a communication system

#144
20050105717
2005-05-19

Telephony interface apparatus

#145
20050105472
2005-05-19

Test access matrix (TAM) protector module and associated circuitry for a telecommunications system

#146
20050099755
2005-05-12

Broadband surge protector with non-resetting current limiter

#147
20050073793
2005-04-07

Dual stage current limiting surge protector system

#148
20050069114
2005-03-31

Method and apparatus for improving nuisance signals in audio/video conference

#149
20050063126
2005-03-24

Surge cancel apparatus

#150
20050018862
2005-01-27

Digital signal processing system and method for a telephony interface apparatus

#151
16362105
2019-06-25

Desired signal spotting in noisy, flawed environments

#152
16267202
2020-05-26

Adaptive selection of isolation ground for differential interface

#153
16261503
2020-05-26

IVR engagements and upfront background noise

#154
16022370
2019-04-23

Desired signal spotting in noisy, flawed environments

#155
15041187
2018-12-25

Shared schedule time slot allocation

#156
14818258
2016-10-04

Adaptive power control

#157
14464621
2015-08-25

System and method for adaptive power control

#158
13367940
2016-06-07

Circuits and methods for protecting integrated circuits from powerline noise