Well, it has been a few weeks and I have finally stopped the attacks. I practiced with the phone ringing and going to another room and closing the door. He didn't like this at all - Mum on the phone and in another room. Didn't take too long and he seemed to get the idea. If he attacks me while I am on the phone I will go in another room and he won't be able to come. Soon enough, however, he started again so with practice I started putting him away and of course he hated that so much that when the phone rang he flew round the house to avoid being caught. To cut a long story short, we got through it and he doesn't attack me any more while I am on the mobile phone. He now, sort of, ignores the phone. I have, however, discovered why he did it in the first place. It was all for attention. He didn't like me giving attention to the phone and not him.
HIS NEW BEHAVIOUR

- The phone rings and Smokey ignores it and me. After a few seconds he comes and sits in front of me or on my lap, leans forward, bows his head and starts clucking. This is the position he assumes when he wants a rub and a scratch. If I ignore him, which is funny to do on purpose, he will tilt his head to the side and look up at me as if to say, "come on, I'm being cute even though I am demanding your attention".
It is classic behaviour our human children display when Mum wants to talk on the phone. He just wants to be the centre of attention - ALL THE TIME
I must admit, this new behaviour is much more manageable than the attacks & apparently he sounds really funny to the other person on the other end of the phone. He has been described as anything from a whimpering puppy to a monkey

For as long as I am on the phone he will just sit and enjoy his little body massage / neck scratches. Sometimes he stays after I have finished on the phone but other times as soon as I put the phone down, he's off.
Hmmmm Who's the boss in my house? LOL