Re: Randomly SMS sent passes or fails

[Viallard Anthony <viallard@syscom-instruments.com>]

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Hi denis and ofono guys,

On 28. 03. 13 15:24, Denis Kenzior wrote:
>
> Is the modem auto-attaching to GPRS by default? You might want to turn
> off that behavior if posible.
>

I'm still searching why I've issues on SMS with SIM5216 GSM module and 
T-Mobile.

What did you mean by auto-attaching to GPRS by default ?

To bring GPRS up, I configure it and I call 
ConnectionContext.SetProperty with Active=1 and then, I've got GPRS.

I dig out this old answer because I searched why in ConnectionManager 
I've got Bearer: "none". Then, I've found a place (in gprs_initialized() 
function) where ofono try to get data bearer. By default, ofono uses 
"AT+CPSB=1" and a callback on "+CPSB:" reply.

There haven't "AT+CPSB" command for SIM5216. I thought I needed to add a 
quirk like Telit or Huawai. I searched on internet and found an old 
message from this list ("[PATCH 6/8] gprs: data bearer for telit with 
PSNT") where you, Denis, answer to Christopher Vogl about the data 
bearer quirk which made for telit and wonder :

"Do you really need to query this?  In theory if we are turning off
auto-attach, we should never be in a state where the bearer should be
queried."

So, I don't know if I must add a quirk (there AT+CNSMOD command for 
SIM5216). What does auto-attach mean ?

Regards,
Anthony Viallard.