Plivo generates events when the state of a call changes to let the application know about the progress of the call.
Plivo will send one of these values under the Event
parameter:
StartApp | The call was answered and is currently in progress. Calls with this status can be explicitly terminated using the Hangup API. |
Transfer | The call was transferred using the Transfer API. This event is sent to the target URL of the XML you return from the transfer URL. |
Redirect | The call was redirected using the Redirect XML element. |
MachineDetection | Plivo generates this event when the machine_detection parameter is used in the Outbound Call API request. The event is sent to the machine_detection URL. |