Essex police, and the prosecution went out of their way to pretend that if Neville Bamber had hypothetically telephoned Jeremy (as claimed by Jeremy), that Jeremy would have been unable to ring his dad back and get an 'engaged tone', or the police, or his girlfriend, because several minutes would need to have elapsed before his phone 'reset' itself!
This of course was not true!
All that Neville Bamber had to do, was say what he needed to say to Jeremy, then depress the receiver to get a dialing tone, followed by the telephone no. of the police - this I believe was what happened! Jeremy's account being verified by the timed record of Neville Bambers 3.26am call that he made to Essex police, 'DAUGHTER GONE BERSERK', and 'MY DAUGHTER HAS GOT HOLD OF ONE OF MY GUNS'...