How to add DTMF to voicemail

Hi All;

I want to add dtmf to the voice mail for extension.
I want to ask the caller to enter number of digit then give him the beep to start to record the voice mail .

How can i add the dtmf to the voicemail procedure.

I’m running AsteriskNOW 13
FreePBX 12.0.74


Voicemail at an Asterisk level doesn’t allow this. You can do a custom dialplan to play a message, ask for a pin then go to a voicemail box without a greeting