From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============1176239522138689441==" MIME-Version: 1.0 From: Denis Kenzior Subject: Re: [RfC] Retry registering packet radio to home PLMN when available. Date: Wed, 28 Oct 2009 16:21:19 -0500 Message-ID: <200910281621.19526.denkenz@gmail.com> In-Reply-To: List-Id: To: ofono@ofono.org --===============1176239522138689441== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Hi Andrew, > One reason you might want to not register to network would be for power > saving. Sure, but remember there are two cases here: The device oFono is managing is a proper voice + data modem. In which case = the likely scenario is that we want to always be registered to the voice = network and not register to GPRS network for power reasons. The second case is we're managing a GPRS-only data device. In which case t= he = power considerations are flipped. > > It seems like a small gain for adding this dependency (which will seem > especially strange to users not knowing about this quirk we're relying > on). The current picture is that we want to have an indication of > when we might be able to register back to home PLMN with gprs. We > keep the gprs radio disabled and enable the circuit-switched radio > possibly with the only aim being to have that (possibly weak) For the devices that oFono is primarily targeting (e.g. voice + data device= s) = this behavior is exactly what we want, no? > indication. Couldn't we instead use the gprs radio for the same > purpose? We would simply prohibit activating contexts while roaming > and we would report Attached =3D false on D-Bus. I agree that we want to do this for data-only devices. In which case I = suspect we need to have the driver tell oFono that it is a data-only device= . = With implications that we always auto-attach, and either ignore RoamingAllo= wed = setting completely or do as you suggest and refuse to activate the context. = The tricky part is how to report the operator. Remember that it is quite = ambiguous what COPS=3D0 does. On some devices it activates CSD radio. On = some = GPRS, and both on others. Regards. =3DDemos --===============1176239522138689441==--