Switch DTR Line ON

Hi, all.

I have a Q2687 with R73gg firmware running my application that communicates to external devices using Q26’s UART port through FCM service. Now I need to deal with a device which serial protocol requires switching on DTR line. I thouhg I could manage to do it using Device Service but UART_ROLE_DTE wich allows to set DTR line is not currently supported by OpenAT firmware. Is there any way I can do it? Thanks in advance.