On Fri, 24 Jul 2009 16:12:41 +0200 Oliver Neukum <oliver@xxxxxxxxxx> wrote: > Am Freitag, 24. Juli 2009 14:48:05 schrieb Alan Cox: > > > No, I was thinking of having two full devices, a data channel and a > > > control channel for devices that really talk AT commands natively. > > > > If the hardware does it great, however for things like a 3G modem you > > have the problem that the PPP is over the AT command channel which may > > itself be multiplexed. And the muxing in question is *ugly* - sort of > > HDLC and LAP-B done wrong. > > Well, yes, but we would really like a separate control channel, so we > can query parameters like signal strength, while we do PPP over the data > channel. Thats the notion of the AT mux stuff - you get multiple AT channels and you can stuff PPP down one of them. It's still butt ugly. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
