I have Nortel Call Pilot 150 (v31.10.14.22) which I have set up a CCR tree with sub-menus. All works well except for Auto Attendant.

One first level (1.0)of CCR tree with main choices, if a person does not select anything it defaults to the auto attendant.
If a person select a sub-menu (1.1 or 1.2) with another set of choices and does not select anything, it will say "exiting the system" and disconnect the line. NOT GOOD!
I want it always to default to auto attendant in any level of CCR tree if no choices are made. Or at least to automatically repeat the CCR level tree choices.