which IOS submenu would you advice the new Certkiller trainee technician to enter DTMF digit pattern commands?

In which IOS submenu would you advice the new Certkiller trainee technician to enter DTMF digit pattern commands?

A.
Router(config-if)#.

B.
Router(config-dial-peer)#.

C.
Router(config-vm-int)#.

D.
Router(config-telephony)#.