Patents Assigned to U.S.T.N. Services
  • Patent number: 5974052
    Abstract: An enhanced frame relay access device (FRAD) capable of bidirectional interfacing between Signaling System No. 7 (SS7) protocol and Frame Relay protocol is utilized to economically transport SS7 signaling and link management information between SS7 networks via a Frame Relay protocol digital communications network. In an outgoing data transfer, the enhanced SS7 FRAD interface determines and eliminates redundant signaling unit information found in an SS7 data stream before packaging the essential information into a frame "payload" and introducing the frame into the Frame Relay network. For incoming data transfers, the SS7 FRAD extracts the frame payload data and regenerates the appropriate SS7 signaling units to maintain a continuous and synchronous data stream on the SS7 network.
    Type: Grant
    Filed: May 10, 1996
    Date of Patent: October 26, 1999
    Assignee: U.S.T.N. Services
    Inventors: Bruce E. Johnson, Michael J. Mueller, Craig C. Pedersen, Virgil E. Long, Venkataramaiah Ravishankar, Jesse Sherwood