US Patent No: 5,490,212

Number of patents in Portfolio can not be more than 2000

Call-routing method for a virtual private network as well as service computer and exchange therefor

Stats

See full text
ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A call-routing method for a virtual private network consisting of two or more private communication units which are interconnected via switched connections of a public network as required, wherein to switch the switched connections, a service is dialled which then initiates further switching based on a private numbering plan, characterized in that to establish a connection to a subscriber of the private network, a subscriber of the public network dials the same service which then initiates further switching to one of the private communication units, that the service assigns tariffing attributes to each call initiated by it, and that the service assigns to a call between the private communication units other tariffing attributes than to the other calls. It is also directed to a service computer that supports switching calls both within and outside a private network, with different tariffing attributes assigned to the different type of calls. The service computer switches both calls between private branch exchanges of a private network and calls from outside with the aid of a private numbering plan, the latter being initiated with a different tariff. It is also directed to an exchange having at least one such service computer.

Loading the Abstract Image... loading....

First Claim

See full text

all claims..

Related Publications

Loading Related Publications... loading....

Patent Owner(s)

Patent OwnerAddressTotal Patents
ALCATEL SEL AKTIENGESELLSCHAFTSTUTTGART32

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lautenschlager, Wolfgang Weissach, DE 60 440

Cited Art Landscape

Patent Info (Count) # Cites Year
 
AT&T Bell Laboratories (4)
5,187,710 Method and apparatus for the billing of value-added communications calls 105 1990
5,185,785 Method and apparatus for recording and rating telecommunication transactions made over a communication network 43 1991
5,226,075 Method of and apparatus for numbering and routing calls through a communication network 62 1992
5,357,564 Intelligent call screening in a virtual communications network 57 1992
 
ALCATEL N.V. (1)
5,345,502 Establishment of connections between terminals for mobile subscribers of an interconnected network 26 1992
 
Bell Telephone Laboratories, Incorporated (1)
4,348,554 Method of providing virtual private network telephone service 198 1980
 
ROLM SYSTEMS (1)
4,882,699 Communications network routing and management system 20 1988
 
TELULAR CORPORATION (1)
5,361,297 Method and apparatus for providing answer supervision and an autonomous pay telephone incorporating the same 71 1992
 
Other [Check patent profile for assignment information] (2)
4,225,240 Method and system for determining interferometric optical path length difference 31 1978
4,756,019 Traffic routing and automatic network management system for telecommunication networks 72 1986

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
SECURELOGIX CORPORATION (7)
6,735,291 Virtual private switched telephone network 16 2000
6,700,964 Encapsulation, compression and encryption of PCM data 25 2002
6,879,671 Virtual private switched telecommunications network 5 2003
7,133,511 Telephony security system 22 2004
7,231,027 Encapsulation, compression, and encryption of PCM data 1 2004
7,440,558 Telephony security system 12 2004
8,150,013 Telephony security system 1 2006
 
ALCATEL (5)
5,991,375 Method of operating a communications network as well as a communications network and an interworking facility 8 1997
5,926,536 Method of establishing a connection as well as an exchange, service computer and communications network 3 1997
6,466,661 Method of establishing a connection, as well as exchange, service computer and communications network 4 1997
6,181,789 Telecommunication system and processor means, and method 2 1998
6,741,690 Network server 2 2001
 
American Telephone and Telegraph Company, AT&T Bell Laboratories (3)
6,567,514 Method and system for processing telephone calls via a remote tie-line 15 2001
7,274,786 Method and system for processing telephone calls via a remote tie-line 3 2003
7,505,575 Method and system for processing telephone calls via a remote tie-line 1 2007
 
SBC TECHNOLOGY RESOURCES, INC. (3)
7,054,431 Method and system for generating call data reports 3 2001
6,771,753 Billing for abbreviated dialing plan service 4 2001
6,985,568 Billing for abbreviated dialing plan service 3 2004
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (2)
6,275,222 System and method for synchronizing a graphic image and a media event 3 1996
7,693,059 Advanced VPN routing 0 2006
 
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) (2)
6,094,479 Computer telephony integration gateway 68 1997
6,044,142 Method and arrangement for integrating intelligent network services with operator assisted services 56 1997
 
BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY (1)
6,205,216 Apparatus and method for inter-network communication 6 1997
 
Data Race, Inc. (1)
6,301,339 System and method for providing a remote user with a virtual presence to an office 69 1997
 
LEE, KIN MAN (1)
6,810,417 Content delivery network system and method for network configuring 29 2002
 
MCI COMMUNICATIONS CORPORATION (1)
6,236,644 Method of setting up a conference call 19 1997
 
Microcom Systems, Inc. (1)
6,285,680 Central site call routing apparatus and method 30 1997
 
NEC CORPORATION (1)
6,480,595 Method of communication through leased line in virtual private network 10 1999
 
NEC INFRONTIA CORPORATION (1)
7,590,103 Adaptor serving for both mobile phone unit and private IP phone unit 1 2003
 
SBC KNOWLEDGE VENTURES, L.P. (1)
7,672,443 Virtual private network dialed number nature of address conversion 1 2004
 
SIEMENS AKTIENGESELLSCHAFT (1)
6,381,327 Method for linking subscribers to plural communication networks 3 1997
 
STENTOR RESOURCE CENTRE INC. (1)
6,453,035 Method and apparatus for providing virtual private network services over public switched telephone network 19 1998
 
TEXAS TECHNOLOGY VENTURES (1)
6,603,853 Method and apparatus for demonstrating telecommunications products 4 1999
 
TRINAD CAPITAL MASTER FUND LTD. (35%) (1)
7,280,530 Apparatus and method for integrated voice gateway 32 2002
 
TTA WIRELESS TRANSFER CO., LLC (1)
6,490,345 Dialing plan service including outgoing call screening, remote tie-line routing, call data reporting and billing 28 2001
 
VPNET TECHNOLOGIES, INC. (1)
6,079,020 Method and apparatus for managing a virtual private network 204 1998