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Testing user terminal status

  • US 20060159245A1
  • Filed: 01/03/2006
  • Published: 07/20/2006
  • Est. Priority Date: 01/19/2005
  • Status: Active Grant
First Claim
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1. A network system to test user terminal status, the network system comprising:

  • at least one user terminal adapted to transmit a status message in response to a Session Initiation Protocol (SIP)-based Options message; and

    a soft switch adapted to;

    transmit the Option message;

    determine whether or not the status message has been received; and

    recognize whether the at least one user terminal is in a Busy state or an Idle state based on a result of the determination.

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