On Tue, 2009-11-17 at 23:35 +0100, Marcel Holtmann wrote: > Hi Dan, > > > > > > I can't seem to find it in the GUI or in the documentation. > > > > > > > > > > Can NetworkManager be configured to only connect to home networks? > > > > > Say I > > > > > am on Vodafone and get free data usage, but then move to an area with > > > > > poor signal for Vodafone, can I prevent switching to T-Mobile which > > > > > costs me money? > > > > > > > > > > If yes, can this be determined automatically, or is this done with a > > > > > string match? > > > > > > > > For cards where we actually know the commands for controlling roaming, > > > > yes we can do this, otherwise NM will need to send the specific MCC/MNC > > > > of your operator to the modem, which has its own problems. This is > > > > definitely going to be fixed in the near future, but there's no facility > > > > for doing so now other than entering the MCC/MNC of your operator into > > > > teh Network entry in the connection editor. > > > > > > what do you mean by this. It makes no sense. Which card can be > > > controlled to roam or not via its firmware. Normally this is all host > > > stack stuff. > > > > Yeah, seems that's mostly CDMA cards right now. My bad. > > so with CDMA cards you can actually tell them to allow roaming or not? > If so, do you get notifications when it does.
Yes, for cards which provide more than one port and for which we know the AT commands. > > > You get the current MCC/MNC from the network notifications and your home > > > network is part of the IMSI. Only trick part with the IMSI is that you > > > have to check first if the MNC is two or three digits long. That value > > > is stored somewhere in the SIM card. > > > > Does that mean talking directly to the SIM to find out the MNC length? > > There's boatloads of networks with 3-digit MNC (americas and India > > mostly) so it would completely suck if you couldn't tell just from the > > MNC. > > Actually you really can't tell it by just looking at the IMSI. In oFono > we have to do some heavy lifting to get this information out of the SIM > card. And it is the only way to find the home network that actually > issued your SIM card (at least to me knowledge). Interesting. Yay for GSM. Dan _______________________________________________ NetworkManager-list mailing list NetworkManager-list@gnome.org http://mail.gnome.org/mailman/listinfo/networkmanager-list