Re: Sierra Wireless 330u modem does not register

[Aleksander Morgado <aleksander lanedo com>]

> > > I have an ARM device that I'm trying to make use a Sierra Wireless 330U
> > > to connect to Bell Canada. I'm working on getting ModemManager on the
> > > device, but I'm fighting cross-compilation issues.
> > >
> > > Until then, I'm trying to connect it manually and I'm having trouble.
> > >
> > > First, when putting the modem in a Windows laptop or a Cradlepoint
> > > device, it registers and connects almost immediately, so the SIM is fine
> > > and it's in a serviceable area. Also, this device works with other
> > > modems, including the very similar Sierra Wireless 313U, so the USB port
> > > is fine.
> > > The modem is not registering with the network. +CEREG? gives 0,2 (or I
> > > can set CEREG=2 to get notifications, and it gives me 2,2). +CREG and
> > > +CGREG also give me a 2.
> > > +CFUN is 1. Setting it to 0 and back to 1 doesn't cause it to register.
> > > +CPIN? returns "+CPIN: READY", which (I believe) means it doesn't need a
> > > PIN for the SIM.
> > > The APN is setup as either pda.bell.ca or inet.bell.ca (I'm trying both)
> > > using +CGDCONT in context id 1; there is no username or password needed.
> > > (although I don't think this stuff matters - it should register anyway)
> > > Attempting to attach to the packet service using AT+CGATT=1 just hangs
> > > for a while before returning OK.
> > First: do you have your antenna connected? :)
> >
> > Second: Maybe try to tell the modem to connect to the home network? If
> > using minicom to talk to the modem directly, use:
> >    AT+COPS=0
> > if using MM git master with mmcli you can use:
> >    $> mmcli -m # --3gpp-register-home
> It shouldn't need an external antenna if it connects with no problem on
> the laptop.

Ah, it's a USB modem already, thought it was a minipci device.

> +COPS=0 returns OK and it still never registers.
> +COPS=? gives back just a list of forbidden operators as follows; I
> don't see any available operators.
> +COPS:
> (3,"AT&T","AT&T","310410",2),(3,"AT&T","AT&T","310410",0),(3,"T-Mobile","TMO","31026",0),(3,"T-Mobile","T-Mobile","310260",2),,(0,1,2,3,4),(0,1,2)

Weird, did you try the same command from the Windows laptop where you
can connect? Just wondering if you get an allowed operator listed there.

-- 
Aleksander