The 3.26am call to Malcom Bonnett from PC West was via an exchange line, not a 999 call! It is not known whether the reference to the 'exchange line' is to the fact that Neville Bambers call to PC West was by way of the exchange line call, or if PC West told Malcom Bonnett that, otherwise Neville's call was by way of a 999 call, and Bonnett recorded the fact that PC West contacted him by way on the exchange line?
What we do know, is that from the offset by 3.42am and 3.56am, the phone at the farm was off the hook, but It became engaged (5.47am), and then at 6.08am the operator was asked to switch the phone at the farm to the police using the 999 system. The phone status at the farm did change, from being off the hook, to becoming engaged, and then the operator was asked to switch the phone at the farm to the police using the 999 system...