An application can register for asynchronous events. The registering application can request all events for all configured TX boards or it can register for specific boards, one at a time. The event and board number are the only relevant elements in events received by the application, in the event and value fields of the Natural Access CTA_EVENT structure. The following table lists the possible events:
|
Event |
Description |
|
HMI_EVN_BRDDEAD |
Board is dead, must reload. |
|
HMI_EVN_CONFLICT |
There is confusion in the state. |
|
HMI_EVN_CONNECTED |
Mate board is now available from this board. |
|
HMI_EVN_EXTRACT |
TX board extraction is pending. |
|
HMI_EVN_HALTED |
Previously requested halt is finished. |
|
HMI_EVN_INSERT |
TX board was inserted. |
|
HMI_EVN_ISOLATED |
Mate board is now unavailable from this board. |
|
HMI_EVN_LOADING |
Previously requested load has started. |
|
HMI_EVN_NETWORK_DOWN |
Board lost SIGTRAN connectivity with all configured remote nodes. |
|
HMI_EVN_NETWORK_UP |
Board gained SIGTRAN connectivity to one or more configured remote nodes. |
|
HMI_EVN_NOWBACKUP |
Node is now the backup node. |
|
HMI_EVN_NOWPRIMARY |
Node is now the primary node but the application layers may not yet be available. |
|
HMI_EVN_NOWSTANDALONE |
Node is now stand alone. |
|
HMI_EVN_SERVICE_DOWN |
Node is shutting down. All connections must be closed. The board number is not relevant for this event. |
|
HMI_EVN_STARTING |
Node is freshly started. |
|
HMI_EVN_STOP |
Application must close communications to the TX board (close services). |
|
HMI_EVN_TASKDEAD |
A task on the board is dead, must reload. |