Hi Zhenhua,

> I grabed code from obex to register&start DUN GW service when we parse adapter properties. From patch 6/6, you can see my current implementation is to find the first powered modem that having GRPS atom. Load settings from modem.conf could be another option. But what if the modem is detected from udev? It could be huawei0, huawei1 or huawei<N>.

Doing it via .conf file is still possible.  E.g. we might be able to
stipulate that only modems with a particular driver get exported (e.g.
driver="huawei" or driver="isi")  Or perhaps a hardcoded path / first
modem available.  I wouldn't worry about it for now, do whatever is
easiest.  The more interesting part is getting the oFono core emulator
bits working.

Regards,
-Denis