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Flexible SIP profile for mixed networks

  • US 20070177603A1
  • Filed: 02/02/2006
  • Published: 08/02/2007
  • Est. Priority Date: 02/02/2006
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • negotiating by two endpoints, via signaling mechanisms within SIP (Session Initiation Protocol), a level of support for ISUP (Integrated Services Digital Network User Part) services that are usable between the two endpoints.

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