H04M19/02 - CPC Classification Index

ClassID:

228049 ⎘

H04M19/02 - CPC Classification

Classification description:

Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone

Sub-classes:

H04M19/023 » {by reversing the polarity of the current at the exchange} 1
H04M19/026 » {Arrangements for interrupting the ringing current} 5
H04M19/04 » ringing-current generated at substation 996

Recent Application in this class:

20250048005

2025-02-06

DEVICE FOR DETECTION OF A CLIPPED RINGING SIGNAL

20210064138

2021-03-04

Feedback system

20190034880

2019-01-31

Method for automatically transmitting an imminent event via an interface to a terminal point associated with a user, and a conversion device designed therefor

20180295232

2018-10-11

System and method for effectuating real-time shaped data transfer during call setup procedure in a telecommunication network

20180006683

2018-01-04

Reverse power feeding power sourcing equipment and method

20170064074

2017-03-02

Communication device

20160379611

2016-12-29

Systems and Method for Music Remixing

20160360044

2016-12-08

Direct-current to alternating-current power conversion

20160044151

2016-02-11

Volume control for mobile device using a wireless device

#10

20150365539

2015-12-17

VOIP terminal and ringing parameter setting method therefor

#11

20150334226

2015-11-19

Apparatus and method for detection of off-hook phone in reverse power feeding architecture

#12

20150130625

2015-05-14

Piezoelectric user interface

#13

20150098562

2015-04-09

Voltage regulator with charge pump for generating second voltage source

#14

20140369489

2014-12-18

Method for handling a telecommunications connection, telecommunications arrangement, switching device and network coupling device

#15

20140355753

2014-12-04

Method for optimising electrical consumption of a residential gateway

#16

20130215799

2013-08-22

Local area network of serial intelligent cells

#17

20130215798

2013-08-22

Local area network of serial intelligent cells

#18

20120282923

2012-11-08

System and method for the synchronized transmission of tone sequences

#19

20120088476

2012-04-12

Proximity-enhanced reconfiguration of telephone ring list

#20

20110263223

2011-10-27

Systems and methods of synchronizing ring tone cycles and delivery of DTMF tones

#21

20110183665

2011-07-28

System and method for the synchronized transmission of tone sequences

#22

20110085652

2011-04-14

Method and apparatus for dynamically scheduling ringing signals

#23

20110057809

2011-03-10

Personal alert device

#24

20110033038

2011-02-10

Method and apparatus for battery switching during ringing

#25

20110007890

2011-01-13

Method and apparatus for ringing

#26

20100315370

2010-12-16

Piezoelectric user interface

#27

20100154022

2010-06-17

Local area network of serial intelligent cells

#28

20100020962

2010-01-28

Method and apparatus for transmitting signaling tones over a packet switched network

#29

20090154690

2009-06-18

Parallel signal processing system and method

#30

20080219288

2008-09-11

Local area network of serial intelligent cells

#31

20080160963

2008-07-03

Method of modifying ring tone

#32

20080095076

2008-04-24

NETWORK DEVICE AND LOAD ASSIGNING METHOD THEREOF

#33

20070263652

2007-11-15

Local area network of serial intelligent cells

#34

20070195719

2007-08-23

Local area network of serial intelligent cells

#35

20070183447

2007-08-09

Local area network of serial intelligent cells

#36

20070147413

2007-06-28

Local area network of serial intelligent cells

#37

20070041545

2007-02-22

Computer-based method and apparatus for controlling, monitoring, recording and reporting telephone access

#38

20060291497

2006-12-28

Local area network of serial intelligent cells

#39

20060251110

2006-11-09

Local area network of serial intelligent cells

#40

20060215771

2006-09-28

Direct digital access arrangement circuitry and method for connecting to phone lines

#41

20060092962

2006-05-04

Local area network of serial intelligent cells

#42

20060077970

2006-04-13

Local area network of serial intelligent cells

#43

20060062241

2006-03-23

Local area network of serial intelligent cells

#44

20060056444

2006-03-16

Local area network of serial intelligent cells

#45

20060052143

2006-03-09

Piezoelectric user interface

#46

20060018339

2006-01-26

Local area network of serial intelligent cells

#47

20060018338

2006-01-26

Local area network of serial intelligent cells

#48

20050254641

2005-11-17

Ring voltage generation circuit and method for generating a ring voltage

#49

20050207184

2005-09-22

Peak power management and active decoupling arrangement for span-powered remote terminal access platforms

#50

20050163152

2005-07-28

Local area network of serial intelligent cells

#51

20050074115

2005-04-07

Direct drive for a subscriber line differential ringing signal

#52

20050063534

2005-03-24

Direct drive for a subscriber line differential ringing signal having a DC offset

#53

20050054390

2005-03-10

Piezoelectric user interface

#54

20050013320

2005-01-20

Local area network of serial intelligent cells

#55

17068219

2022-05-03

Parallel signal processing system and method

#56

16186252

2020-10-13

Parallel signal processing system and method

#57

15717668

2019-02-19

Proximity-enhanced reconfiguration of telephone ring list

#58

14744377

2017-06-27

Parallel signal processing system and method