# ACU_SS_CALL_STATUS constants

These constants specify the status of the call in the call_status fields in the following extended data structure:

- acu_ss_notify_transfer_invoke

Constant | Description/Notes
--- | ---
ACU_SS_CALL_STATUS_NOT_SPECIFIED | Information is not available.
ACU_SS_CALL_STATUS_ALERTING | Connection has not progressed to the active state.
ACU_SS_CALL_STATUS_ANSWERED | Connection has progressed to the active state.