test CBS

install `ofono-phonesim`
uncomment in `/etc/ofono/phonesim.conf`:
[phonesim]
Address=127.0.0.1
Port=12345

-->restart phone

#launch phonesim app: ( you should see a black background with activity indicator )
[Xenial]
DESKTOP_FILE_HINT=unity8.desktop ofono-phonesim -p 12345 -gui /usr/share/phonesim/default.xml &
[Focal]
QT_IM_MODULE=maliitphablet DESKTOP_FILE_HINT=lomiri.desktop ofono-phonesim -p 12345 -gui /usr/share/phonesim/default.xml &

--> enter

#enable phonesim modem:
/usr/share/ofono/scripts/enable-modem /phonesim
--> GUI should be displayed, change orientation to make it more readable

#Register /phonesim as the main SIM card so that telepathy-ofono can deal with it
# adapt "ofono/ofono/ril_0" with the one of available accounts `mc-tools list` ( Focal >= H9 ofono/ofono/ril_0 )
mc-tool update ofono/ofono/ril_0 string:modem-objpath=/phonesim
mc-tool reconnect ofono/ofono/ril_0


--> in tab "CBM"
write text
channel (in hexa) should be changed each time or "Update Number" should be increased each time (hexa) ( ofono does not allow to replay the same CBM )
example: Presidentical channel (4370): hexa = 1112


"channels" subscription can be made with:
Get properties: dbus-send --system --print-reply --dest=org.ofono /phonesim org.ofono.CellBroadcast.GetProperties 
Set Topics: dbus-send --system --print-reply --dest=org.ofono /phonesim org.ofono.CellBroadcast.SetProperty string:'Topics' variant:string:'4371-4380,4396'

Listen to ouputs from Ofono:
sudo dbus-monitor --system "type='signal',sender='org.ofono'"

Back to default:
kill background process ( fg ,  ctrl + c )
mc-tool update ofono/ofono/ril_0 string:modem-objpath=/ril_0
mc-tool reconnect ofono/ofono/ril_0

List of channels:
see 9.4.1.2.2 chapter at https://www.etsi.org/deliver/etsi_ts/123000_123099/123041/11.05.00_60/ts_123041v110500p.pdf