Common channel signalling

Industry

CPC
H04Q2213/176

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Parent Industries

HELECTRICITY H04Electric communication H04QSELECTING H04Q2213/00Indexing scheme relating to selecting arrangements in general and for multiplex systems

Current Industry

H04Q2213/176Common channel signalling

Industries

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Patents Grantslast 30 patents

Information Patent Grant
Distinctive ringing and distinctive call-waiting tones in an ISDN
- Patent number 5,953,407
- Issue date Sep 14, 1999
- Nortel Networks Corporation
- Genzao Zhang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital telephone switching system having plural terminal devices d...
- Patent number 5,719,855
- Issue date Feb 17, 1998
- Hitachi Telecom Technologies, Ltd.
- Tatsuhiko Ando
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Bus line traffic control adapter apparatus
- Patent number 5,668,799
- Issue date Sep 16, 1997
- NEC Corporation
- Hiroyuki Nobesawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Information display provided to calling party
- Patent number 5,608,788
- Issue date Mar 4, 1997
- Lucent Technologies Inc.
- William W. Demlow
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method and apparatus for masking the reporting of network telephony...
- Patent number 5,581,608
- Issue date Dec 3, 1996
- ROLM Systems
- Elie A. Jreij
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Data management method and system thereof
- Patent number 5,568,551
- Issue date Oct 22, 1996
- Sony Corporation
- Isao Kawashima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Telephony device for a telephony communications network with fixed...
- Patent number 5,375,122
- Issue date Dec 20, 1994
- Dassault Automatismes et Telecommunications
- Joel Soupirot
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Facility and method for D channel packet switching
- Patent number 5,357,504
- Issue date Oct 18, 1994
- Alcatel N.V.
- Gerd Siegmund
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method of activating tandem digital subscriber lines
- Patent number 5,243,593
- Issue date Sep 7, 1993
- Alcatel Network Systems, Inc.
- Jeffrey L. Timbs
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Network terminating terminal apparatus for integrated services digi...
- Patent number 5,204,860
- Issue date Apr 20, 1993
- Northern Telecom Limited
- Thomas C. Sparks
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Semi-automated operator assistance telecommunication calls
- Patent number 5,046,183
- Issue date Sep 3, 1991
- AT&T Bell Laboratories
- Gary L. Dorst
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Time and charges information delivery for operator assistance telec...
- Patent number 5,043,983
- Issue date Aug 27, 1991
- AT&T Bell Laboratories
- Gary L. Dorst
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
ISDN network termination unit enabling to establish data link betwe...
- Patent number 4,999,836
- Issue date Mar 12, 1991
- NEC Corporation
- Ryuhei Fujiwara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Simple adapter for multiplexing ISDN terminals
- Patent number 4,935,923
- Issue date Jun 19, 1990
- NEC Corporation
- Tomoyoshi Shimizu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Common channel signalling

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Distinctive ringing and distinctive call-waiting tones in an ISDN

Digital telephone switching system having plural terminal devices d...

Bus line traffic control adapter apparatus

Information display provided to calling party

Method and apparatus for masking the reporting of network telephony...

Data management method and system thereof

Telephony device for a telephony communications network with fixed...

Facility and method for D channel packet switching

Method of activating tandem digital subscriber lines

Network terminating terminal apparatus for integrated services digi...

Semi-automated operator assistance telecommunication calls

Time and charges information delivery for operator assistance telec...

ISDN network termination unit enabling to establish data link betwe...

Simple adapter for multiplexing ISDN terminals

Patents Applicationslast 30 patents