Hi Mathias, > * Multiplex mode, however, is independently useful. As the name implies, > it is a way to talk to more than one part of a GSM modem concurrently, > so you can do stuff like check the uplink quality (or send text > messages ;-) while online. It is entered with AT+CMUX; you may or > may not be able to leave that mode without physically powering down > the USB bus. > > The OpenMoko people have written a kernel driver for multiplexing, > but that is still out-of-tree. I'd like that to get fixed. we also have a second TTY on these cards, but so far nobody managed to decode its protocol. Are you actually sure that the Option card support the multiplexer. Last time I checked it seemed they didn't and use the second TTY with a binary protocol instead. HAL actually needs to be fixed to _not_ mark the second TTY as modem since it is none. > The end result I'd like to see is that, when the user plugs in their GSM > modem, that fact gets propagated via udev/hal/dbus so that a GUI window > pops up and asks for the PIN, after which (a) Network Manager sees the > device and is able to connect, and/or (b) I can use Telepathy to send > and receive text messages. (Using the card as a phone should of course > also be possible, but some of those modems don't even support audio > data...) At the last Ubuntu developer summit I started a gnome-modem-manager that is exactly doing this. I used it since then, but actually never published the code. Let me get this online somewhere. Regards Marcel
