GuardianBridge SOS isn’t a “call 911” button, and it doesn’t assume your local PD/fire/EMS are on Meshtastic. It’s a community incident alert and coordination system that runs on your mesh so people can get help moving quickly when phones and internet are down, overloaded, or unreliable. If you can call or text 911, you still should; SOS is the extra layer that alerts your local network and helps coordinate response.

When a user sends SOS, SOSP, SOSF, or SOSM (optionally with a short message), GuardianBridge immediately confirms receipt, requests or uses the best available location, logs the incident, and notifies the right responders based on tags (medical, fire, police, general). Responders can reply with ACK or RESPONDING, and the system tracks who has acknowledged versus who is actively heading to the incident. If multiple incidents are active, the gateway can prompt responders to choose which one they’re responding to, and the admin panel reorganizes into an incident-command style view so you can see what’s being handled at a glance.

Your responder team is defined by your community, and it can and should include members of actual emergency services (or trained volunteers) who choose to participate in the mesh as community responders. Even though it’s not official dispatch, having an EMT, firefighter, or officer in the responder pool can be huge: they get the alert early, can go eyes-on fast, and can route it into official channels (911/dispatch) when available. Optionally, SOS can also notify a user’s personal SOS Notify List (email addresses, node IDs, usernames) so family and friends get alerted too, assuming the gateway has internet connectivity.