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Transport mechanism for ISDN backhaul over IP

  • US 6,839,344 B1
  • Filed: 12/19/2000
  • Issued: 01/04/2005
  • Est. Priority Date: 12/19/2000
  • Status: Expired due to Fees
First Claim
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1. A method of backhauling a Layer Three Integrated Services Digital Network (ISDN) message from a gateway to an Application Server Process (ASP) over an Internet Protocol (IP) based network, the gateway receiving the Layer Three ISDN message from an ISDN based network, the method comprising the steps of:

  • establishing a backhaul link between the gateway and the ASP in conformance with a Transmission Control Protocol; and

    monitoring for a failure of the backhaul link by using heartbeat messages in conformance with a User Datagram Protocol (UDP).

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