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3.1.5.2 Parkee's Call Successfully Replaced by the CPS

If the INVITE with Replaces to the parkee successfully establishes a dialog, the CPS MUST respond to the parker’s ms-call-park SIP INVITE with a SIP 200 OK. The CPS MUST identify itself by adding an "isCps" feature tag to its Contact URI. Feature tags are defined in [RFC3840] section 10. The response from the CPS MUST have a body of type "application/ms-call-park+xml" and be a park-response element. Its orbit element MUST contain the value of the orbit that was chosen to park the call. The ms-parked-call element MUST contain a string chosen by the CPS that uniquely identifies the parked call. The version attribute of the park-response element MUST be set to "1.0" and the request-id attribute MUST match that of the corresponding park-request.

The auto-ringback timer for this parked call MUST be started once park completes.