Filed a bug report:

http://bugzilla.gnome.org/show_bug.cgi?id=565177

Anything I can do to help, let me know...

Best Regards,
Jacob Nielsen

On Fri, 2008-12-19 at 14:19 +0100, spammed wrote:

> Hi,
> 
> I got this 3G modem after 'verifying' that it would work with
> networkmanager on Ubuntu 8.10:
> 
> http://forums.whirlpool.net.au/forum-replies.cfm?t=1046813&r=17127620#r17127620
> http://tensixtyone.com/perma/howto-debian-lenny-huawei-e160g#comment-267 
> 
> However it did not work with my provider OiSTER.dk - when attempting
> to connect it would fail like this:
> 
> NetworkManager: <info>  Searching for a network...
> NetworkManager: <debug> [1228941447.278901] nm_serial_debug():
> Sending: 'AT+CREG?'
> NetworkManager: <debug> [1228941447.288917] nm_serial_debug(): Got:
> '+CREG: 0,2
> OK'
> NetworkManager: <info>  Searching for a network...
> NetworkManager: <debug> [1228941447.791863] nm_serial_debug():
> Sending: 'AT+CREG?'
> NetworkManager: <debug> [1228941447.802718] nm_serial_debug(): Got:
> '+CREG: 0,3
> OK'
> NetworkManager: <WARN>  automatic_registration_response(): Automatic
> registration failed: registration denied.
> 
> I extracted AT commands from a WinXP USB trace, which showed that
> while the CREG command would report "registration denied" the GPRS
> command CGREG would report connection status as expected.
> The GSM 07.07 section on the CGREG command has the following note:
> 
> "NOTE. If the GPRS MT also supports circuit mode services, the +CREG
> command and +CREG: result code apply to the registration status and
> location information for those services."
> 
> So apparently GPRS registration succeeds while registration for
> circuit mode services fails. Can this be provider dependent?
> (Oister.dk provides a local data-only service.) Or maybe it is just a
> modem firmware bug?
> 
> Since the commands are so similar, I changed CREG to CGREG in the
> sources (specifically nm-gsm-device.c) as an experiment - and now it
> just works...
> You should of course draw your own conclusions from this, but
> apparently there are cases where checking the CREG status is not
> enough. 
> 
> Best regards,
> Jacob Nielsen 
> 
> Attached: WinXP USB trace and AT commands, nm-serial log, system info,
> patch.
> 
> 
> 
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