From mboxrd@z Thu Jan 1 00:00:00 1970 From: "=?iso-8859-1?q?R=E9mi?= Denis-Courmont" Subject: Re: [PATCH] USB host CDC Phonet network interface driver Date: Fri, 24 Jul 2009 16:00:33 +0300 Message-ID: <200907241600.33806.remi.denis-courmont@nokia.com> References: <1248177515-12712-1-git-send-email-remi.denis-courmont@nokia.com> <200907241431.08858.oliver@neukum.org> <20090724134805.0d9496be@lxorguk.ukuu.org.uk> Mime-Version: 1.0 Content-Type: Text/Plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: Oliver Neukum , Marcel Holtmann , ext Dan Williams , "netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" To: ext Alan Cox Return-path: In-Reply-To: <20090724134805.0d9496be-qBU/x9rampVanCEyBjwyrvXRex20P6io@public.gmane.org> Content-Disposition: inline Sender: linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: netdev.vger.kernel.org On Friday 24 July 2009 15:48:05 ext Alan Cox wrote: > > 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 ma= y > itself be multiplexed. And the muxing in question is *ugly* - sort of > HDLC and LAP-B done wrong. I guess he meant that AT commands could be sent out-of-band, for those = USB=20 modems that fully implement the ACM profile of CDC, if any. --=20 R=E9mi Denis-Courmont Nokia Devices R&D, Maemo Software, Helsinki -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html