On 2017-09-22, Kevin Chadwick <[email protected]> wrote: > On Wed, 20 Sep 2017 16:42:29 +0000 (UTC) > > >> > Are there any opinions on a reliable or best 3G/UMTS/LTE device. A >> > ublox device was being specified but I am guessing that would have >> > been more work to get going, though it does come with open source >> > Linux drivers, I believe? >> >> Something supporting USB Communications Device Class: Mobile Broadband >> Interface Model (umb driver) would be best. umsm is old crap. > > Thanks Stuart, very helpful. Am I right, assuming an unknown device > supports this standard correctly that I would most likely simply need > to create a patch with product/device IDs and it should work?
It's meant to match based on device class + subclass and shouldn't need product IDs. (In the MS world, it would be expected to work with the standard driver in newer versions of Windows and not need anything vendor specific). There's some extra setup needed on certain devices (umb_fccauth_devs in if_umb.c works for /some/ of these) but even those still match the driver, just don't enable the radio correctly. With these you get the proper external IP on the interface rather than being natted inside the LTE device as happens with many of the other newer device types (this is particularly useful for remote access if you have a SIM with static IP or that breaks out on your own L2TP infrastructure like the ones from aaisp.net.uk can do).
