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Service Identification

Service Identification. Jonathan Rosenberg Cisco. Changes since -01. Separation of Concepts Service Identifier (e.g., “telephony”) Declarative Service Identification – UA declares service ID inside signaling Derived Service Identification – proxy derives service ID from signaling

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Service Identification

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  1. Service Identification Jonathan Rosenberg Cisco

  2. Changes since -01 • Separation of Concepts • Service Identifier (e.g., “telephony”) • Declarative Service Identification – UA declares service ID inside signaling • Derived Service Identification – proxy derives service ID from signaling • Added use case where SIP adds audio to game, when game is non-SIP • URIs as a key architectural principle for solving this

  3. Changes Since -01 • Litmus Test for DWIM vs. DWIS • If request is sent to network that doesn’t understand ‘service id’, does: • It fail or fallback appropriately • The wrong thing happen • Discussion on delayed offer – don’t do that – fundamentally incompatible with media based service ID

  4. Question • Do these changes address concerns raised on list?

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