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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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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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

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Patent Owner(s)

Patent OwnerAddressTotal Patents
RPX CORPORATIONSAN FRANCISCO, CA2322

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fangman, Richard E Pflugerville, TX 5 275
Preston, Jason D Austin, TX 10 302

Cited Art Landscape

Patent Info (Count) # Cites Year
 
SORENSON COMMUNICATIONS, INC. (1)
* 2002/0042,832 System and method for interoperability of H.323 video conferences with network address translation 33 2001
 
ERICSSON INC. (1)
6,515,997 Method and system for automatic configuration of a gateway translation function 178 1999
 
NORTEL NETWORKS LIMITED (1)
* 2002/0101,859 Communicating between nodes in different wireless networks 58 2001
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
* 2010/0232,423 IP PHONE SYSTEM AND IP PHONE TERMINAL REGISTRATION METHOD 0 2010
 
NET2PHONE, INC. (2)
7,797,433 System, method, and computer program product for resolving addressing in a network including a network address translator 12 2001
* 2004/0252,683 System, method , and computer program product for resolving addressing in a network including a network address translator 44 2003
 
PANASONIC CORPORATION (2)
* 8,108,552 Information processing device, server, communication system, address decision method, address modification method, and program 0 2005
* 2008/0235,399 Information Processing Device, Server, Communication System, Address Decision Method, Address Modification Method, and Program 2 2005
 
LEVEL 3 COMMUNICATIONS, LLC (1)
* 2007/0153,813 Traffic distribution in a communications network 10 2005
 
UNIFY GMBH & CO. KG (2)
* 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
* 2006/0268,752 Method for setting up a connection to a terminal via a communication device, and a terminal and a communication device for implementing the method 1 2006
 
THOMSON LICENSING (1)
* 2009/0080,420 Device and Method to Detect Applications Running On a Local Network for Automatically Performing the Network Address Translation 1 2006
 
HITACHI, LTD. (2)
* 7,729,343 IP phone system and IP phone terminal registration method 2 2007
* 2007/0274,308 IP PHONE SYSTEM AND IP PHONE TERMINAL REGISTRATION METHOD 2 2007
 
VONAGE BUSINESS INC. (1)
9,106,673 Systems and methods for connecting telephony communications 0 2012
 
IBASIS, INC. (7)
* 7,529,225 System and method for voice over internet protocol (VoIP) and facsimile over internet protocol (FoIP) calling over the internet 5 2002
* 2003/0123,436 System and method for voice over Internet protocol (VoIP) and facsimile over Internet protocol (FoIP) calling over the Internet 24 2002
* 7,577,131 System and method for voice over internet protocol (VoIP) and facsimile over internet protocol (FoIP) calling over the internet 17 2003
* 2004/0047,345 System and method for voice over internet protocol (VoIP) and facsimile over internet protocol (FoIP) calling over the internet 23 2003
8,265,062 System and method for accomplishing special call treatment in a voice over internet protocol telephone system 2 2005
* 2006/0146,784 System and method for monitoring a voice over internet protocol (VoIP) system 14 2006
* 2011/0002,330 SYSTEMS AND METHODS OF DECIDING HOW TO ROUTE CALLS OVER A VOICE OVER INTERNET PROTOCOL TELEPHONE CALL ROUTING SYSTEM 1 2010
 
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 8 2007
 
AT&T MOBILITY II LLC (2)
8,811,358 Network-initiated method and system for establishing data communication using IP with a wireless terminal 0 2011
* 2011/0182,242 Network-Initiated Method and System for Establishing Data Communication Using IP with a Wireless Terminal 2 2011
 
RPX CORPORATION (1)
8,107,460 System and method for IP telephony paging 0 2006
 
MICROSOFT TECHNOLOGY LICENSING, LLC (2)
* 7,408,926 Method and apparatus for accessing voice over internet protocol connection 5 2004
* 2012/0047,253 NETWORK TOPOLOGY DETECTION USING A SERVER 1 2011
 
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 (2)
8,181,009 VLAN tagging over IPSec tunnels 1 2009
* 2010/0228,974 VLAN TAGGING OVER IPSec TUNNELS 4 2009
 
KABUSHIKI KAISHA TOSHIBA (1)
* 2010/0080,217 Sip Telephone System and Method for Controlling Line Key Display 0 2009
 
TEKELEC (1)
* 7,864,665 Methods and systems for detecting IP route failure and for dynamically re-routing VoIP sessions in response to failure 4 2004
 
GENBAND US LLC (1)
* 2006/0245,350 Methods and systems for detecting IP route failure and for dynamically re-routing VoIP sessions in response to failure 19 2004
 
ENthEnergy, LLC (1)
* 2008/0075,096 REMOTE ACCESS TO SECURE NETWORK DEVICES 1 2006
 
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE (1)
* 2003/0031,173 Multilayer internet protocol (MLIP) for peer-to-peer service of private internet and method for transmitting/receiving MLIP packet 3 2002
 
AT&T KNOWLEDGE VENTURES, L.P. (1)
* 2008/0019,386 RESOURCE RESERVATION PROTOCOL BASED GUARANTEED QUALITY OF SERVICE INTERNET PROTOCOL CONNECTIONS OVER A SWITCHED NETWORK THROUGH PROXY SIGNALING 12 2007
* Cited By Examiner

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