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Fast call set-up for multi-mode communication

  • US 20050239498A1
  • Filed: 04/26/2004
  • Published: 10/27/2005
  • Est. Priority Date: 04/26/2004
  • Status: Active Grant
First Claim
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1. A method for reducing a call setup time for a call setup to a multi-mode communication unit, the method comprising:

  • registering, with a Session Initiation Protocol (SIP) registrar, a list of contacts having first respective priorities associated with a first mode of operation of the multi-mode communication unit;

    using the first respective priorities when the multi-mode communication unit is operating in accordance with the first mode of operation; and

    modifying the list of contacts at the SIP registrar, with second respective priorities associated with a second mode of operation of the multi-mode communication unit when a probability of a switch from operation in accordance with the first mode of operation to operation in accordance with the second mode of operation satisfies a threshold.

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