On Mon, Feb 18, 2019 at 09:11:51AM -0800, Rob Newberry wrote: > I'm pretty sure there are differences in how NetBSD's USB modem class > driver interacts with the device from how other platforms do. For the > time being, I'm trying to read the code of the NetBSD and the FreeBSD > drivers, along with the USB CDC spec, to see what's going on.
Hmm, I thought I would be using umodem, but actually it is u3g. However, I am pretty sure that at that level the driver does not do anything special but just pass on the data in both ways. Martin