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

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7068646
APP PUB NO 20020150083A1
SERIAL NO

09903822

Stats

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, CA2310

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fangman, Richard E Pflugerville, TX 5 305
Preston, Jason D Austin, TX 10 348

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 34 2001
 
ERICSSON INC. (1)
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NORTEL NETWORKS LIMITED (1)
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* 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)
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* 2004/0252,683 System, method , and computer program product for resolving addressing in a network including a network address translator 83 2003
 
PANASONIC CORPORATION (2)
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LEVEL 3 COMMUNICATIONS, LLC (1)
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UNIFY GMBH & CO. KG (2)
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THOMSON LICENSING (1)
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HITACHI, LTD. (2)
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VONAGE BUSINESS INC. (2)
9106673 Systems and methods for connecting telephony communications 0 2012
9444944 Systems and methods for connecting telephony communications 0 2015
 
IBASIS, INC. (7)
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AT&T INTELLECTUAL PROPERTY I, L.P. (1)
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AT&T MOBILITY II LLC (3)
8811358 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
9391890 Network-initiated method and system for establishing data communication using IP with a wireless terminal 0 2014
 
RPX CORPORATION (1)
8107460 System and method for IP telephony paging 0 2006
 
MICROSOFT TECHNOLOGY LICENSING, LLC (2)
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CINGULAR WIRELESS II, LLC (1)
* 7940730 Network-initiated method and system for establishing data communication using IP with a wireless terminal 1 2004
 
HARRIS CORPORATION (2)
8181009 VLAN tagging over IPSec tunnels 1 2009
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KABUSHIKI KAISHA TOSHIBA (1)
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TEKELEC (1)
* 7864665 Methods and systems for detecting IP route failure and for dynamically re-routing VoIP sessions in response to failure 5 2004
 
GENBAND US LLC (1)
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ENthEnergy, LLC (1)
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ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE (1)
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AT&T KNOWLEDGE VENTURES, L.P. (1)
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* Cited By Examiner

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