Attribute takes a URL as an argument. The URL points to a RCML document that is executed on the queued caller’s end (Customer) when the caller is put in the queue and waiting for the next available enqueue (Agent). The waitUrl RCML supports Say, Play, Redirect verbs. If total duration of , together is less than timeout value, Call Queue will put the waitUrl response in a loop and play untill a timeout occurs or the call is connected. verb can be used for calling RCML document again and the Application can add some dynamic business logic that can change in next loop. Call Queue will pass the parameters explained in Request Parameters in its request to the value of the waitUrl attribute.