Is it possible to make a 5-level voice menu for 1 subscriber?

Question

Telephony

Ready-made solutions such as a call center involve no more than 3 menu levels and a large number of subscribers.
Here the task is that there is only one subscriber who calls, and an answering machine answers him.
The call comes from a mobile phone, but where, i.e. what solution to use (virtual PBX or something else) is a question.