Question : From a landline number to a cell phone

Hey guys,

One of my clients never had a cell phone (old school).  So he finally wants to eliminate his home landline and transfer same number to the cell phone.  The main reason is he wants to keep the buzzer/door intact.  So when someone entering his code downstairs his phone rings, he presses '9' and door opens.  If he keeps same number on the cell phone he doesn't have to do any changes, just press same 9 on the cell phone.

Make sense?

Answer : From a landline number to a cell phone

If that is the case, it shoud not be an issue.  It depends on how the building is or is not wired.