AnyHelp? Asterisk-11.5.1app_Confbridge.c,HowtoRecieveDTMF?

Any Help

How to Send Recieve DTMF in Asterisk 11.5.1 app_Confbridge.c .

Note :In our Case We do not want to pass User_menu .
User will place DTMF String or digit runtime .
my System should Recieve DTMF and play file and do operation.
Eg.

1.Confbridge.conf
[6016adminuser]
type=user
admin=yes ; Sets if the user is an admin or not. Off by default.
;admin_kick_last
;marked=yes
quiet=no
;admin_toggle_mute_participants=yes ;mute all other
announce_user_count=yes
music_on_hold_when_empty=yes
music_on_hold_class=default
announce_user_count_all=yes
announce_join_leave=yes
dsp_drop_silence=yes
denoise=yes
pin=1111
dtmf_passthrough=yes

===========
2 . dailplan
exten =>555,1,answer()
same=>n,Set(CONFBRIDGE(user,music_on_hold_when_empty)=no)
same=>n(Press5MuteAll),ConfBridge(4000,6016adminuser,)

User Press *: play adminmenu.gsm
User has press *1#:Mute Unmute

but How to detect and Recoznieds* and *1# .