I used a terminal app kermit to talk directly to the modem; dial strings must be terminated by ; to make them work:
purism@pureos:~$ sudo kermit ~purism/.kermrc
C-Kermit 9.0.305 OPEN SOURCE: Alpha.02, 19 Sep 2020, for Linux+SSL+KRB5 (64-bit)
Copyright (C) 1985, 2020,
Trustees of Columbia University in the City of New York.
Type ? or HELP for help.
(/home/purism/) C-Kermit>c
Connecting to /dev/ttyUSB3, speed 9600
Escape character: Ctrl-U (ASCII 21, NAK): enabled
Type the escape character followed by C to get back,
or followed by ? to see other options.
----------------------------------------------------
atd##62#;
OK
^MODE: 3
+DISC: 5,0,0,31,"##62#",129
NO CARRIER
^MODE: 9
...
it also does work to dial a valid number:
atd0170xxxxxxxxx;
NO CARRIER
^MODE: 3
+DISC: 15,0,1,69,"0170xxxxxx",129
^MODE: 9
NO CARRIER
^MODE: 3
+DISC: 15,0,1,69,"0170xxxxxxxx",129
^MODE: 9
I was a week in Cuba with a cuban SIM card of the provider Cubacel and the USSD code of showing the balance of the account (*222#, see left screen) and buying an additional package from the overall balance (*133#) and the resulting dialog to chose with a number the desired package (see right screen) worked fine. I will try to cut out the syslog of those operations.
Update: There wasn’t anything in syslog about these successful USSD commands.
Sorry, misunderstood the image then - I though that USSD images were some app to use ussd codes. Didn’t realize they are sub-windows to Calls.
The other question, about the seconds, was in reference to the images where the time (top center) has seconds visible. At least from my settings I can’t find that.
The images are just screen shoots of the the sub windows of the gnome-calls app. To get seconds in the top status bar my small booklet says:
33 times displayed and NTP
To show seconds of the time in the lock screen and upper status
bar use:
gsettings set org.gnome.desktop.interface clock-show-seconds true
note: this does not affect the app Clock;
time is synced by NTP, see: /etc/systemd/timesyncd.conf for the config
of the systemd-timesyncd service: (note this shows as comments the
...
