In the 3300 check the COS for an option, I think it named ANI display number only or something close to that. If not enabled, the user can hit a softkey (depending on phone model) to toggle between name and number. If your phone has a big enough display, you may get both, otherwise you'll get a softkey, or just the name.
In the 5000 there is a phone flag, Display Outside Name. If it's set to Yes I think you can toggle with feature 379, if set to no I think you just get the number.