Hi Enrico,

On 01/09/2015 05:56 AM, Enrico Sau wrote:
> Dear all,
> I don't understand why, after every sent SMS PDU, the DTR signal is set
> down.
> This is a problem for me, since my modem does not answer anymore with
> DTR down.
> Can anyone please explain the reason and suggest how to avoid it?
>

No idea, oFono does not utilize any serial controls whatsoever.

Regards,
-Denis