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System and method for out-sourcing the functionality of session initiation protocol (SIP) user agents to proxies

  • US 20020103850A1
  • Filed: 01/31/2001
  • Published: 08/01/2002
  • Est. Priority Date: 01/31/2001
  • Status: Abandoned Application
First Claim
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1. A session initiation protocol (SIP) system for communications between a client and at least one networked appliance, comprising:

  • a user agent server (UAS) processor connected to said appliance so as to relay commands to said appliance and receive status information from said appliance;

    a user agent client (UAC) processor having the capacity to send SIP command messages intended for said appliance to said UAS processor over a communications network and to receive over the communications network status information messages about said appliance from said UAS processor, said UAS processor translating received SIP commands into commands recognized by the appliance and translating information provided by said appliance into SIP status messages for transmission over the communications network to said UAC processor; and

    a network appliance system proxy server (Proxy) located between the UAC and the UAS for receiving and conveying information between them; and

    wherein the UAS processor does use address mapping capability for handling at least some of the messages to and from the appliances; and

    wherein Proxy has address mapping capability to direct said at least some messages through the appropriate UAS processor to the appliance to which they are addressed.

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