GET externaltaskID callback

Purpose: Get callback using the ExternalTaskId that provided on creation request. 

Most important parameters that are returned:

• All parameters provided during Callback request creation
• State of callback tasks:
  • Pending – session is created
  • In Queue – the callback is in the queue to be answered, the search of an agent is started
  • Processing – the callback task has been accepted by an agent, and the outbound dial-out to the customer has been made
  • Terminated – the callback is done and the parties are hanging up
• Creator which identifies the way callback was created. "Luware.API", "WebService" (if created on LUCS FE), "WfActivity" (if created through workflow)
• Initiator which in case the Creator is "WebService" will contain the name of the Supervisor who created this callback task and otherwise contains "WF Activity" or "Luware.API"
• LeftInQueueTimeInSeconds: Current value how long the task was left in queue