When an active event is triggered and sent via an Iridium modem, the asset’s current speed cannot be populated and sent as part of the event message. The event will show a ‘0’ in the event notification as it is unknown (a null value).
This means that all events acquired through satellite will thus display ‘0’ on the event notification for the actual speed value.
If the event is however configured to return the road speed or GPS velocity then this will still be populated in the event value field.