US Patent No: 7,068,646

Number of patents in Portfolio can not be more than 2000

System and method for performing IP telephony including internal and external call sessions

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ALSO PUBLISHED AS: 20020150083
ATTORNEY / AGENT: (SPONSORED)
 

Importance

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Abstract

System and method for IP telephony including internal and external call sessions. The system includes at least one IP telephone (IPT), a Service Gateway (SG), and a Media Gateway Controller (MGC). The SG receives a Call Setup request, including a source IP address and a destination telephone number. A first Media Gateway is selected based on the source IP address. A second Media Gateway is selected based on the destination telephone number. A public IP address of the first Media Gateway is compared to a public IP address of the second Media Gateway, and if the same, respective private IP addresses of the first and second Media Gateway are selected for Call Setup. If different, the respective public IP addresses of the first and second Media Gateway are selected for Call Setup. Thus, the system and method distinguish between external and internal call sessions and route the IP traffic accordingly.

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First Claim

Related Publications

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Patent Owner(s)

Patent OwnerAddressTotal Patents
VOXPATH NETWORKS, INC.AUSTIN, TX5

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fangman, Richard E Pflugerville, TX 7 147
Preston, Jason D Austin, TX 11 148

Cited Art

Patent Info (Count) # Cites Year
 
ERICSSON INC. (1)
6,515,997 Method and system for automatic configuration of a gateway translation function 114 1999
 
NORTEL NETWORKS LIMITED (1)
2002/0101,859 Communicating between nodes in different wireless networks 49 2001
 
SORENSON COMMUNICATIONS, INC. (1)
2002/0042,832 System and method for interoperability of H.323 video conferences with network address translation 25 2001

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
IBASIS, INC. (3)
7,529,225 System and method for voice over internet protocol (VoIP) and facsimile over internet protocol (FoIP) calling over the internet 3 2002
7,577,131 System and method for voice over internet protocol (VoIP) and facsimile over internet protocol (FoIP) calling over the internet 0 2003
8,265,062 System and method for accomplishing special call treatment in a voice over internet protocol telephone system 0 2005
 
AT&T INTELLECTUAL PROPERTY I, L.P. (1)
7,778,263 Resource reservation protocol based guaranteed quality of service internet protocol connections over a switched network through proxy signaling 1 2007
 
CINGULAR WIRELESS II, LLC (1)
7,940,730 Network-initiated method and system for establishing data communication using IP with a wireless terminal 0 2004
 
HARRIS CORPORATION (1)
8,181,009 VLAN tagging over IPSec tunnels 0 2009
 
HITACHI, LTD. (1)
7,729,343 IP phone system and IP phone terminal registration method 1 2007
 
MICROSOFT CORPORATION (1)
7,408,926 Method and apparatus for accessing voice over internet protocol connection 4 2004
 
NET2PHONE, INC. (1)
7,797,433 System, method, and computer program product for resolving addressing in a network including a network address translator 2 2001
 
PANASONIC CORPORATION (1)
8,108,552 Information processing device, server, communication system, address decision method, address modification method, and program 0 2005
 
SIEMENS ENTERPRISE COMMUNICATIONS GMBH & CO. KG (1)
7,961,718 Method for setting up a connection to a terminal via a communication device, and a terminal and a communication device for implementing the method 0 2006
 
TEKELEC (1)
7,864,665 Methods and systems for detecting IP route failure and for dynamically re-routing VoIP sessions in response to failure 2 2004
 
VOXPATH NETWORKS, INC. (1)
8,107,460 System and method for IP telephony paging 0 2006

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
7.5 Year Payment $3600.00 $1800.00 $900.00 Dec 27, 2013
11.5 Year Payment $7400.00 $3700.00 $1850.00 Dec 27, 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