US Patent No: 7,006,436

Number of patents in Portfolio can not be more than 2000

Method for providing voice-over-IP service

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Abstract

A system and method, i.e. Voice Proxy Server (VPS), is invented for managing Voice over IP (VoIP) services between a NAT enabled private network and a public network such as the Internet. The VPS acts like the Call Agent to the nodes in the private network and it represents an embedded voice client to the real Call Agent in the public network. Each logical line of the VPS corresponds to a real voice line in the private node. VoIP signaling messages may be carried in the payload of the IP packets. VPS will properly translate IP address and/or port number information in the payload to correctly route the signaling data between networks. Additionally, VPS will forward the incoming Real Time Protocol (RTP) packets to the real destination in the private network.

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First Claim

Related Publications

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Patent Owner(s)

Patent OwnerAddressTotal Patents
AT&T CORP.NEW YORK, NY4123

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chu, Yue-Chuan Convent Station, NJ 11 217
Hua, Ningming Rockaway, NJ 10 58
Murray, John F Denville, NJ 50 342

Cited Art

Patent Info (Count) # Cites Year
 
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (2)
5,781,550 Transparent and secure network gateway 245 1996
6,055,236 Method and system for locating network services with distributed network address translation 347 1999
 
ROCKSTAR BIDCO, LP (2)
6,519,249 Scalable gatekeepers in an internet telephony system and a method of operation 52 1998
6,853,713 Client-server network for managing internet protocol voice packets 21 1999
 
ARAVOX TECHNOLOGIES (1)
6,661,799 Method and apparatus for facilitating peer-to-peer application communication 59 2000
 
CISCO TECHNOLOGY, INC. (1)
5,793,763 Security system for network address translation systems 399 1995
 
CNT TECHNOLOGIES, INC. (1)
6,854,642 System for vending products and services using an identification card and associated methods 70 2001
 
FUJITSU LIMITED (1)
6,128,664 Address-translating connection device 126 1998
 
HITACHI, LTD. (1)
6,038,233 Translator for IP networks, network system using the translator, and IP network coupling method therefor 143 1997
 
LUCENT TECHNOLOGIES INC. (1)
6,006,272 Method for network address translation 151 1998
 
Lucent Technologies Remote Access Business Unit (1)
6,058,431 System and method for network address translation as an external service in the access server of a service provider 157 1998
 
ROCKSTAR CONSORTIUM US LP (1)
6,128,298 Internet protocol filter 134 1997
 
Other [Check patent profile for assignment information] (1)
2003/0033,418 Method of implementing and configuring an MGCP application layer gateway 33 2002

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
FORTINET, INC. (4)
7,716,725 Firewall interface configuration and processes to enable bi-directional VoIP traversal communications 11 2002
8,020,202 Firewall interface configuration to enable bi-directional VoIP traversal communications 2 2010
8,201,236 Firewall interface configuration to enable bi-directional VOIP traversal communications 1 2011
8,434,143 Firewall interface configuration to enable bi-directional VoIP traversal communications 0 2012
 
AT&T CORP. (2)
7,203,166 Method for providing voice-over-IP service 3 2005
7,406,043 Method for providing voice-over-IP service 5 2007
 
AT&T INTELLECTUAL PROPERTY II, L.P. (2)
7,715,421 Third party call control of all phones 0 2004
8,203,946 Method for providing voice-over-IP service 2 2008
 
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (2)
7,417,988 Method and system for network based call-pickup 6 2003
7,860,089 Method and system for network based call-pickup 10 2008
 
MICROSOFT CORPORATION (2)
7,408,926 Method and apparatus for accessing voice over internet protocol connection 4 2004
7,761,619 Method and system for parallelizing completion event processing 0 2005
 
BROADVIEW NETWORKS, INC. (1)
8,208,412 Method and system for network address translation (NAT) traversal of real time protocol (RTP) media 0 2007
 
GENBAND US LLC (1)
7,224,696 Access nodes in packet-based communications networks 10 2002
 
HUAWEI TECHNOLOGIES CO., LTD. (1)
8,422,391 Method, media gateway and media gateway controller for maintaining NAT address mapping table 0 2010
 
KDDI CORPORATION (1)
7,729,365 Gateway for controlling electric equipment connected to LAN through WAN 0 2007
 
LUCENT TECHNOLOGIES INC. (1)
7,353,021 Network controller replacement of indication of one or more specific network connections usable by first network component in signaling message for second network component with wild card network connection information 6 2002
 
SIEMENS ENTERPRISE COMMUNICATIONS GMBH & CO. KG (1)
8,223,762 Method and device for translating internet protocol addresses inside a communications network 0 2006
 
TADIRAN TELECOMMUNICATIONS LTD. (1)
7,542,475 Communication between users located behind a NAT device 5 2004

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
7.5 Year Payment $3600.00 $1800.00 $900.00 Aug 28, 2013
11.5 Year Payment $7400.00 $3700.00 $1850.00 Aug 28, 2017
Fee Large entity fee small entity fee micro entity fee
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00