similar way I tried both

api originate {origination_caller_id_name='XXX',
start_dtmf_generate=true}user/1000

&bridge({accountcode='XXX'}sofia/gateway/gw_name/phno)

and

api originate {origination_caller_id_name='XXX'}user/1000

&bridge({accountcode='XXX',
start_dtmf_generate=true}sofia/gateway/gw_name/phno)
 

it's not working, but the inband type is working when i use it in dialplan.

Please assist.