Action 1: hangup_after_bridge
Value 1: true 

Action 2: continue_on_fail
Value 2: NORMAL_TEMPORARY_FAILURE,USER_BUSY,NO_ANSWER,NO_USER_RESPONSE,NO_ROUTE_DESTINATION,NETWORK_OUT_OF_ORDER,CALL_REJECTED,DESTINATION_OUT_OF_ORDER,NORMAL_CIRCUIT_CONGESTION

Action 3: bridge
Value 3: sip/trunk/trunk1/$1

Action 4: bridge
Value 4: sip/trunk/trunk2/$1