with subscriber controlled access to a line

Industry

CPC
H04M9/002

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Parent Industries

HELECTRICITY H04Electric communication H04MTELEPHONIC COMMUNICATION H04M9/00Interconnection arrangements not involving centralised switching

Current Industry

H04M9/002with subscriber controlled access to a line

Industries

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Patents Grantslast 30 patents

Information Patent Grant
Cloud-based private branch exchange
- Patent number 11,855,808
- Issue date Dec 26, 2023
- Zoom Video Communications, Inc.
- Walter F. C. Anderson
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Intercom system and data transfer method in said system
- Patent number 10,841,430
- Issue date Nov 17, 2020
- AIPHONE CO., LTD
- Seiya Yamakawa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Telephone communication system and method of using
- Patent number 9,049,275
- Issue date Jun 2, 2015
- Paul Newman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Key telephone set having interchangeable units
- Patent number 7,519,176
- Issue date Apr 14, 2009
- NEC Infrontia Corporation
- Masafuku Akatsu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Portable interconnection system for incompatible audio communicatio...
- Patent number 7,436,951
- Issue date Oct 14, 2008
- JPS Communications, Inc.
- Peter W. Pflasterer
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Key telephone system, key telephone, interface unit, and transmissi...
- Patent number 7,194,074
- Issue date Mar 20, 2007
- Kabushiki Kaisha Toshiba
- Norimasa Niiya
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System for the processing of audio data used for music on hold and...
- Patent number 7,076,053
- Issue date Jul 11, 2006
- 3Com Corporation
- Michael S. McCormack
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Key telephone system and interface unit for key telephone
- Patent number 6,978,000
- Issue date Dec 20, 2005
- Kabushiki Kaisha Toshiba
- Norimasa Niiya
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for minimizing the telephony ring voltage powe...
- Patent number 6,956,943
- Issue date Oct 18, 2005
- Sprint Communications Company L.P.
- Earl Goodrich II
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital key telephone set and digital key telephone system
- Patent number 6,807,261
- Issue date Oct 19, 2004
- Kabushiki Kaisha Toshiba
- Toshiaki Takahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Electronic exchange and key telephone system
- Patent number 6,687,361
- Issue date Feb 3, 2004
- Kabushiki Kaisha Toshiba
- Tamotsu Wakabayashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus allowing remote key system units to interoperate
- Patent number 6,661,883
- Issue date Dec 9, 2003
- Nortel Networks Limited
- Michael T. Dowser
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Telephone system for voice recognition
- Patent number 6,647,097
- Issue date Nov 11, 2003
- Matsushita Electric Industrial Co., Ltd.
- Masami Nashirozawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital key telephone system and extension terminal device thereof
- Patent number 6,633,631
- Issue date Oct 14, 2003
- Kabushiki Kaisha Toshiba
- Toshiaki Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital key telephone system and extension terminal device thereof
- Patent number 6,496,576
- Issue date Dec 17, 2002
- Kabushiki Kaisha Toshiba
- Toshiaki Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital key telephone system and extension terminal device thereof
- Patent number 6,456,705
- Issue date Sep 24, 2002
- Kabushiki Kaisha Toshiba
- Toshiaki Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital key telephone system and extension terminal device thereof
- Patent number 6,408,060
- Issue date Jun 18, 2002
- Kabushiki Kaisha Toshiba
- Toshiaki Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method for forwarding a call to a telephone behind a key telephone...
- Patent number 6,396,918
- Issue date May 28, 2002
- Siemens Information and Communication Networks, Inc.
- Neal J. King
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital key telephone system and extension terminal device thereof
- Patent number 6,377,671
- Issue date Apr 23, 2002
- Kabushiki Kaisha Toshiba
- Toshiaki Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital key telephone system and extension terminal device thereof
- Patent number 6,373,924
- Issue date Apr 16, 2002
- Kabushiki Kaisha Toshiba
- Toshiaki Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital button telephone system and extension terminal for the same
- Patent number 6,263,061
- Issue date Jul 17, 2001
- Kabushiki Kaish Toshiba
- Toshiaki Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Exchanging apparatus and control method for exchanging and connecti...
- Patent number 6,118,863
- Issue date Sep 12, 2000
- Kabushiki Kaisha Toshiba
- Isaku Komuro
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Key telephone system without common control
- Patent number 6,088,362
- Issue date Jul 11, 2000
- Nortel Networks Corporation
- Robert Turnbull
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Key telephone system without common control
- Patent number 6,072,826
- Issue date Jun 6, 2000
- Nortel Networks Corporation
- Robert Turnbull
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Key telephone system without common control
- Patent number 6,046,995
- Issue date Apr 4, 2000
- Nortel Networks Corporation
- Robert Turnbull
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Multiple subscriber implementing method in key phone system
- Patent number 5,999,605
- Issue date Dec 7, 1999
- Samsung Electronics Co., Ltd.
- Choon-Ho Yoo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method of preventing fraudulent toll calls by key system users
- Patent number 5,995,604
- Issue date Nov 30, 1999
- Nortel Networks Corporation
- Ken Yat-Wan Chan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Circuit arrangement for providing internet connectivity to a comput...
- Patent number 5,991,293
- Issue date Nov 23, 1999
- Nortel Networks Corporation
- Chris Buchanan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method for embodying automatic call in a keyphone system
- Patent number 5,963,629
- Issue date Oct 5, 1999
- SamSung Electronics Co., Ltd.
- Tae-Hyun Jung
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication terminal having function for displaying originator id...
- Patent number 5,963,627
- Issue date Oct 5, 1999
- Kabushiki Kaisha Toshiba
- Hiroshi Mano
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Cloud-Based Call Routing
- Publication number 20240073061
- Publication date Feb 29, 2024
- Zoom Video Communications, Inc.
- Walter F.C. Anderson
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Cloud-Based Private Branch Exchange
- Publication number 20220247600
- Publication date Aug 4, 2022
- Zoom Video Communications, Inc.
- Walter F.C. Anderson
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
INTERCOM SYSTEM AND DATA TRANSFER METHOD IN SAID SYSTEM
- Publication number 20190281161
- Publication date Sep 12, 2019
- AIPHONE CO., LTD.
- Seiya YAMAKAWA
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Marine switching system for providing time information and method t...
- Publication number 20070189485
- Publication date Aug 16, 2007
- Joon-Beom Jeon
- G04 - HOROLOGY
Information Patent Application
Telephone exchange apparatus and incoming call control method for t...
- Publication number 20070121862
- Publication date May 31, 2007
- Kabushiki Kaisha Toshiba
- Tamikazu Fuse
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Telephone exchange system and control method used for the same system
- Publication number 20060013382
- Publication date Jan 19, 2006
- Takaaki Hoshikawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Portable interconnection system for incompatible audio communicatio...
- Publication number 20050195969
- Publication date Sep 8, 2005
- Peter W. Pflasterer
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Key telephone set having interchangeable units
- Publication number 20040247113
- Publication date Dec 9, 2004
- NEC INFRONTIA CORPORATION
- Masafuku Akatsu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Key telephone system and main unit thereof
- Publication number 20030035521
- Publication date Feb 20, 2003
- Kabushiki Kaisha Toshiba
- Seiji Tani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Key telephone system, key telephone, interface unit, and transmissi...
- Publication number 20020126816
- Publication date Sep 12, 2002
- Kabushiki Kaisha Toshiba
- Norimasa Niiya
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Key telephone system and interface unit for key telephone
- Publication number 20020094071
- Publication date Jul 18, 2002
- Norimasa Niiya
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Digital key telephone set and digital key telephone system
- Publication number 20020025029
- Publication date Feb 28, 2002
- Kabushiki Kaisha Toshiba
- Toshiaki Takahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Digital key telephone system and extension terminal device thereof
- Publication number 20010028708
- Publication date Oct 11, 2001
- Kabushiki Kaisha Toshiba
- Toshiaki Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Digital key telephone system and extension terminal device thereof
- Publication number 20010026611
- Publication date Oct 4, 2001
- Kabushiki Kaisha Toshiba
- Toshiaki Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Digital key telephone system and extension terminal device thereof
- Publication number 20010024493
- Publication date Sep 27, 2001
- Kabushiki Kaisha Toshiba
- Toshiaki Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Digital key telephone system and extension terminal device thereof
- Publication number 20010024494
- Publication date Sep 27, 2001
- Kabushiki Kaisha Toshiba
- Toshiaki Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Digital key telephone system and extension terminal device thereof
- Publication number 20010024492
- Publication date Sep 27, 2001
- Toshiaki Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

with subscriber controlled access to a line

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Cloud-based private branch exchange

Intercom system and data transfer method in said system

Telephone communication system and method of using

Key telephone set having interchangeable units

Portable interconnection system for incompatible audio communicatio...

Key telephone system, key telephone, interface unit, and transmissi...

System for the processing of audio data used for music on hold and...

Key telephone system and interface unit for key telephone

Method and apparatus for minimizing the telephony ring voltage powe...

Digital key telephone set and digital key telephone system

Electronic exchange and key telephone system

Method and apparatus allowing remote key system units to interoperate

Telephone system for voice recognition

Digital key telephone system and extension terminal device thereof

Digital key telephone system and extension terminal device thereof

Digital key telephone system and extension terminal device thereof

Digital key telephone system and extension terminal device thereof

Method for forwarding a call to a telephone behind a key telephone...

Digital key telephone system and extension terminal device thereof

Digital key telephone system and extension terminal device thereof

Digital button telephone system and extension terminal for the same

Exchanging apparatus and control method for exchanging and connecti...

Key telephone system without common control

Key telephone system without common control

Key telephone system without common control

Multiple subscriber implementing method in key phone system

Method of preventing fraudulent toll calls by key system users

Circuit arrangement for providing internet connectivity to a comput...

Method for embodying automatic call in a keyphone system

Communication terminal having function for displaying originator id...

Patents Applicationslast 30 patents

Cloud-Based Call Routing

Cloud-Based Private Branch Exchange

INTERCOM SYSTEM AND DATA TRANSFER METHOD IN SAID SYSTEM

Marine switching system for providing time information and method t...

Telephone exchange apparatus and incoming call control method for t...

Telephone exchange system and control method used for the same system

Portable interconnection system for incompatible audio communicatio...

Key telephone set having interchangeable units

Key telephone system and main unit thereof

Key telephone system, key telephone, interface unit, and transmissi...

Key telephone system and interface unit for key telephone

Digital key telephone set and digital key telephone system

Digital key telephone system and extension terminal device thereof

Digital key telephone system and extension terminal device thereof

Digital key telephone system and extension terminal device thereof

Digital key telephone system and extension terminal device thereof

Digital key telephone system and extension terminal device thereof