Hi Jonas,
On 04/11/2017 03:48 PM, Jonas Bonn wrote:
Hi Denis,
On 04/11/2017 07:07 PM, Denis Kenzior wrote:
On 04/11/2017 03:18 AM, Jonas Bonn wrote:
The LTE atom should watch the network status and automatically activate
the default bearer when the modem becomes registered to the LTE network.
This patch adds a device callback, activate_default_bearer(), to allow
the device to start networking.
Nope, we're not doing it this way. Once we're attached to LTE there's
no need to activate a default bearer. It is already active. The
modem should tell us that this is the case.
Another issue is that the network is free to ignore our default bearer
setting, so you might be activating (or trying to) yet another context.
Doesn't QMI provide an equivalent of +CGEV?
I haven't found an equivalent. Right now it looks to me as though the
only way to set up a PDP context is to call the "Start Networking"
method. If I don't start networking, the packet status callback never
gives me a "connected" status. It's not enough to just power on the
modem... although that does get me registered to the network.
QMI is an ancient protocol, so maybe it simply didn't get extended for
LTE. Or we just don't know how to drive it properly. Is there an AT
channel ? Does that one report anything related to CGEV?
Furthermore, it doesn't matter what APN I use, I always get a usable
data-connection. "Get Settings" never returns an APN string, either,
which makes me that the network is ignoring my setting altogether and
just giving me a default bearer...???
The network is ultimately responsible for allocating an APN. It could
be blank or null or whatever. Or maybe we don't know the right magic
incantation.
Regards,
-Denis
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