It will be when the actual calls is received. For an example, let's say you have scheduled 2:00 to 3:00 and you answer the call at 3:01 the you will not receive pay for that call or time spent in the call since you did not disconnect from the phone systems before the end of the interval. However, let's say a call is taken prior to 3:00, like 2:59, then you will receive pay for the entire duration of the call.