[LetuxOS] Cell broadcast messages on the gta04

[H. Nikolaus Schaller]

Hi,

> Am 12.09.2024 um 11:34 schrieb Andreas Kemnade <andreas at kemnade.info>:
> 
> Hi,
> 
> Am Wed, 11 Sep 2024 11:38:15 +0200
> schrieb "Dr. Michael 'Mickey' Lauer" <mickey at vanille.de>:
> 
>> A quick check on the ancient freesmartphone code as per
>> https://github.com/freesmartphone/cornucopia/blob/master/fsogsmd/src/lib/at/atcbmediators.vala
>> leads to AT+CSCB=[<mode>[,<mids>[,<dcss>]]] being the standard
>> command.
>> 
> so ignore(1) nothing("","") does not work
> 
> AT+CSCB=1,"",""    
> ERROR
> 
> AT+CSCB?
> +CSCB: 0,
> "0,199,299,4352-4356,4370,4383,4356,4352-4354,4370-4379,4383-4392",""
> 
> OK
> 
> so bootup some list of selected channels is received, tried to extend
> that
> AT+CSCB=0, "0-99,100-199,200-999,1000-9000",""
> OK
> 
> Now I had
> AT+CSCB?
> +CSCB: 0,
> "0,199,299,4352-4356,4370,4383,4356,4352-4354,4370-4379,4383-4392,0-99,100-199,200-999,1000-9000","" 
> 
> OK
> 
> But silence at 11 o'clock both on ttyHS_Modem and Application.
> 
> AT+CSCB=?
> +CSCB: (0-1)
> 
> OK
> 
> so this suggests that only simple one parameter calls are accepted.
> AT+CSCB=1
> OK
> AT+CSCB?
> +CSCB: 1, "4370,4370-4379,1000-9000",""
> 
> OK
> AT+CSCB=0
> OK
> AT+CSCB?
> +CSCB: 0, "0-4369,4371-65535,4370,4370-4379,1000-9000",""
> 
> OK
> 
> I have seen the other commands too late, so I can only check setup
> AT+CNMI?
> +CNMI: 2,2,2,0,0
> 
> 
> OK
> 
> so things should be received. I had added that command to simple-gsm
> last time.
> 
> @@ -49,7 +49,7 @@ class GSMModem : Object {
>   bool calling;
>   bool seen_call_state;
>   string oldline;
> -  string [] unsoc_init =
> {"AT+CLIP=1","AT+CREG=2","AT+CSQ","AT+CTZU=1","AT+CREG?"};
> +  string [] unsoc_init =
>  {"AT+CLIP=1","AT+CREG=2","AT+CSQ","AT+CTZU=1","AT+CREG?","AT+CNMI=2,2,2,0,0"};
> 

Thanks for giving this a try!

Well, now we have to wait another year (second Thursday in September, i.e. 11th in 2025).

Or find someone with a private network base station and control software to trigger CBC
on demand. Harald Welte maybe?

BR,
Nikolaus