# Redirecting reason values

The following table lists the valid redirecting reason values for ACU_ALERT_IN, ACU_CONN_CO, ACU_CONN_IN, ACU_CONN_RQ, and ACU_SETUP_REPORT_IN messages.

These values are defined in isdnval.h.

Redirecting reason | Description
--- | ---
REASON_UNKNOWN (Default) | Unknown.
REASON_CALL_FORWARDING_BUSY | Call forwarding busy.
REASON_CALL_FORWARDING_NO_REPLY | Call forwarding no reply.
REASON_CALL_FORWARDING_DTE_OUT | Call forwarding DTE out of order.
REASON_CALL_FORWARDING_BY_CALLED | Call forwarding by called equipment.
REASON_CALL_TRANSFER | Call transfer.
REASON_CALL_PICKUP | Call pickup.
REASON_CALL_FORWARDING_UNCONDITIONAL | Call forwarding unconditional.