ACU primitives summary

NMS supports the generic ISDN protocol, but no longer supports the Omnitel stack. The following table summarizes the supported ACU message primitives and indicates which primitives are deprecated:

Message type

Description

ACU_ALERT_IN

Indicates an alert.

ACU_ALERT_RQ

Sends an alert message.

ACU_CALLID_IN

Delivers a callid or reports a failure to an application.

ACU_CALL_PROC_IN

Indicates incoming call proceeding information (receipt of SETUP ACK, CALL PROCEEDING messages).

ACU_CALL_PROC_RQ

Requests events indicating the progress of a call.

ACU_CLEAR_CO

Confirms that the call has been released.

ACU_CLEAR_IN

Indicates the release of a call.

ACU_CLEAR_RQ

Requests release of a call.

ACU_CLEAR_RS

Indicates a response to a release indication.

ACU_CONN_CO

Indicates a call connection confirmation.

ACU_CONN_IN

Signals an incoming call.

ACU_CONN_RQ

Requests establishment of an outgoing call.

ACU_CONN_RS

Answers an incoming call.

ACU_D_CHANNEL_STATUS_IN

Indicates status of D channel.

ACU_D_CHANNEL_STATUS_RQ

Requests status of the D channel.

ACU_DIGIT_IN

Receives called number digits in overlap receiving mode.

ACU_DIGIT_RQ

Requests called number digits in overlap receiving mode.

ACU_ERR_IN

Indicates an error.

ACU_FACILITY_IN

Indicates a specific facility.

ACU_FACILITY_RQ

Requests a specific facility.

ACU_NOTIFY_IN

Indicates that a NOTIFY message was received.

ACU_NOTIFY_RQ

Requests that a NOTIFY message be sent.

ACU_PROGRESS_IN

Indicates outgoing call progress information (receipt of PROGRESS message).

ACU_PROGRESS_RQ

Indicates progress request.

ACU_RESTART_IN

Indicates that a RESTART ACKNOWLEDGE message has been received.

ACU_SERVICE_CO

Indicates that a SERVICE ACKNOWLEDGE message has been received.

ACU_SERVICE_IN

Indicates that a SERVICE message has been received.

ACU_SERVICE_RQ

Requests that a SERVICE message be sent.

ACU_SETUP_ACK_IN

Acknowledges incoming call proceeding information.

ACU_SETUP_REPORT_IN

Signals that the ACU rejected or ignored an incoming call because it was not compatible (address or service filtering). The application must not answer this incoming call indication. This message is only for information purposes.

ACU_TRANSFER_CO

Indicates whether or not the attempted transfer was successful.

ACU_TRANSFER_RQ

Requests the transfer of two calls.