Unable to call local emergency number, only 112

simonschmeisser · 11 November 2024 21:31

rilmodem/ofono/blob/efc9c0a85d32706bc088e449e847be41dcc73b3d/doc/voicecallmanager-api.txt#L253

      
        
            			Signal emitted when an outgoing voice call is made and
            			the call has been redirected to another number due to
            			the remote party's "Call Forwarding" Supplementary
            			Services settings. In this case the type parameter in
            			the signal is set to "outgoing".
            			The signal is also emitted when the incoming voice call
            			is a redirected call due to a call forwarding operation.
            			In this case the type parameter in the signal is set to
            			"incoming".
            
            
Properties	array{string} EmergencyNumbers [readonly]
            
            
			Contains the list of emergency numbers recognized
            			by oFono.  This list is based on the default set
            			of numbers provided by the specification and any
            			extra numbers provisioned by the carrier on the
            			SIM.

Contains the list of emergency numbers recognized
by oFono.  This list is based on the default set
of numbers provided by the specification and any
extra numbers provisioned by the carrier on the
SIM.

You can read it via dbus like this:

[defaultuser@Xperia10III ~]$ dbus-send --system --print-reply --dest=org.ofono /ril_0 org.ofono.VoiceCallManager.GetProperties
method return time=1731360615.259762 sender=:1.11 -> destination=:1.322 serial=3271 reply_serial=2
   array [
      dict entry(
         string "EmergencyNumbers"
         variant             array [
               string "911"
               string "110"
               string "112"
            ]
      )
   ]

olf · 11 November 2024 23:54

IIRC either 112 (most of the world) or 911 (USA etc.) shall work on any mobile phone under all circumstances.

xmasjos · 12 November 2024 23:23

I don’t know if I correctly recall this, but emergency numbers can be called though any operator, not just the one connected to. Also, when no sim is inserted, no operator can be (fully?) connected to. So where would the phone get the list of emergency numbers when no connection is set up? The easy solution is by having a list builtin, therefore having no dependency on external systems for the ‘can I call this number’ check.

Seven.of.nine · 13 November 2024 10:04

As I remember what I was told from informed people (long ago), if one activates emergency call on a phone, any provider-, contract-, credit- and billing stuff is ignored, the phone connect to the nearest/strongest base station/tower that’s available and establishes a connection with priority and if necessary also interrupts ongoing normal traffic on radio channel to ensure establishing a connection as quick as possible.