Mechanisms for providing intelligent throttling on a NAT...

Details Mechanisms for providing intelligent throttling on a NAT... Mechanisms for providing intelligent throttling on a NAT...

2011-03-08

2011-03-08

Qureshi, Afsar M. (Department: 2472)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S389000, C370S395200, C370S401000, C370S465000, C709S224000, C709S228000

Reexamination Certificate

active

07903661

ABSTRACT:
Disclosed are apparatus and methods for managing session data in a session border controller (SBC), where the session data is sent from a first node, such as a first phone, to a second node, such as a registrar or second phone. In one example embodiment, the following operations are performed in a first intermediary node that is configured to provide network address translation (NAT) for both a header and payload of a session packet and has an inside interface coupled with a second intermediary node that is configured to perform NAT for only a header of session packets. It is determined whether an end node is sending session packets that are not used to set up a session and that result in a binding that was formed by the second intermediary node being retained. The binding associates inside and outside addresses of the end node, and an end node is defined as a node that originates a session packet. It is determined whether to inhibit a registration throttling process from being performed by the first intermediary node, that results in the binding being retained, based on whether it is determined that the end node is sending session packets that are not used to set up a session and that result in the binding being retained.

REFERENCES:
patent: 6717949 (2004-04-01), Boden et al.
patent: 7380011 (2008-05-01), Li et al.
patent: 7424033 (2008-09-01), Kwak
patent: 7561575 (2009-07-01), Biswas et al.
patent: 2004/0240389 (2004-12-01), Bessis et al.
patent: 2006/0200547 (2006-09-01), Edwards et al.
patent: 2007/0078986 (2007-04-01), Ethier et al.
patent: 2007/0226361 (2007-09-01), Shaikh et al.
patent: 2007/0253418 (2007-11-01), Shiri et al.
patent: 2007/0291733 (2007-12-01), Doran et al.
patent: 2008/0019370 (2008-01-01), Riley
patent: 2008/0298237 (2008-12-01), Dos Remedios et al.
Schulzrinne, H. et al., “RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals,” Network Working Group, RFC 2833, May 2000, pp. 1-24, http://www.faqs.org/rfcs/rfc2833.html.
Rosenberg, J. et al., “SIP: Session Initiation Protocol,” Network Working Group, RFC 3261, Jun. 2002, pp. 1-211, http://www.faqs.org/rfcs/rfc3261.
Hautakorpi, J. et al., “SIP—Unfriendly Functions in Current Communication Architectures,” SIPPING Working Group, Internet Draft, Jul. 18, 2005, pp. 1-9, http://tools.ietf.org/id/draft-camarillo-sippig-sbc-funcs-01.txt.
Hautakorpi, J. et al., “SIP—Unfriendly Functions in Current Communication Architectures,” SIPPING Working Group, Internet Draft, Sep. 26, 2005, pp. 1-12, http://tools.ietf.org/id/draft-camarillo-sipping-sbc-funcs-02.txt.
Rosenberg, J. et al., “Considerations for Selection of Techniques for NAT Traversal,” Network Working Group, Internet Draft, Feb. 13, 2005, pp. 1-20, http://tools.ietf.org/html.draft-iab-nat-traversal-consideratins-00.
“Session Border Controllers: Delivering Interactive Communications Across IP Network Borders,” Acme Packet Inc., White Paper, Feb. 19, 2003, pp. 1-11, http://www.acmepacket.com.
Overview of Cisco Multiservice IP-to-IP Gateways, Cisco Multiservice IP-to-IP Gateway Application Guide, 2006, 21 pages.
Functionality of Existing Session Border Controller (SBC), Network Working Group, Internet Draft, Feb. 2005, pp. 1-9, http://polyphase.ca/drafts/draft-camarillo-sipping-sbc-funcs-00.html.
U.S. Appl. No. 11/511,629, filed Aug. 28, 2006.
Notice of Allowance dated Mar. 30, 2009 for U.S. Appl. No. 11/559,591.

Affiliated with

Also associated with

Rating

Mechanisms for providing intelligent throttling on a NAT... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Mechanisms for providing intelligent throttling on a NAT..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mechanisms for providing intelligent throttling on a NAT... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2660125