Patents by Inventor Rambabu Tummala

Rambabu Tummala has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • AAA broker specification and protocol
    Patent number: 6915345
    Abstract: In an IP-based mobile communications system, the Mobile Node changes its point of attachment to the network while maintaining network connectivity. The present invention improves the attachment of the Mobile Node to the IP mobile communications system by allowing a AAA Broker Server to maintain client information necessary to establish the a secure Mobile Node connection to the home network.
    Type: Grant
    Filed: October 2, 2000
    Date of Patent: July 5, 2005
    Assignee: Nortel Networks Limited
    Inventors: Rambabu Tummala, David J. Mitton, Haseeb Akhtar
  • Computer program products, methods, and protocol for interworking services between a public telephone network, intelligent network, and internet protocol network
    Patent number: 6529524
    Abstract: Computer program products, related methods, and a protocol for interworking services between a public telephone network, including an Intelligent Network, and an internet protocol network are provided. A public telephone network transports a TCAP message in an SS7 protocol format, and an internet protocol network, or IP network, transports an encapsulated TCAP message in an IP protocol format. A STIPP (Simple TCAP-IP Interworking Protocol) protocol, represented as a computer data signal including a plurality of bits, is used for exchanging TCAP messages between IP network entities. The computer data signal comprises an internet protocol portion, a transport portion, and a STIP (Simple TCAP Interworking Part) portion. The STIP portion includes a STIP header for encapsulating the TCAP message therein for transmission between IP network entities. Various computer data signal embodiments are provided.
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: March 4, 2003
    Assignee: Nortel Networks Limited
    Inventors: Monling Liao, Emad Qaddoura, Rambabu Tummala, Donald Wurch, Liem Le