I'm having a problem getting rid of a certain prompt in a TVS-90. The manual says the prompt is 502 - 'Sorry, no one is available to take your call'. What's happening is when the telephone is set on DND the call transfers from the main attendant and plays this recording before playing the user's greeting. I have tried turning the prompt off in the system. I have tried recording one second of silence in it's place. I have all mailboxes disabled for operator transfer and automated attendant return to top menu. I'm beginning to think the manual has the wrong prompt number listed. Any help is greatly appreciated.