| Source Element | Destination Element | Flow | 
|---|
| Mayday Service Centers | Personal Information Devices | emergency acknowledge | 
|---|
| Personal Vehicles | emergency acknowledge | 
| Personal Vehicles | emergency data request | 
| Personal Information Devices | Mayday Service Centers | emergency notification | 
|---|
| State EMS Communications Center (StateComm) | emergency notification | 
| Personal Vehicles | Mayday Service Centers | emergency notification | 
|---|
| Mayday Service Centers | emergency notification relay | 
| State EMS Communications Center (StateComm) | emergency notification | 
| State EMS Communications Center (StateComm) | emergency notification relay | 
| State EMS Communications Center (StateComm) | Personal Information Devices | emergency acknowledge | 
|---|
| Personal Vehicles | emergency acknowledge | 
| Personal Vehicles | emergency data request |