# Mode code values

The following table lists the valid mode code values for the Acu_set_mode_code macro in ACU_SET_MODE_RQ messages.

These values are defined in isdnacu.h.

Mode code | Description
--- | ---
ACU_MODE_NA_OUT_OF_ORDER | Allow or forbid calls on NAI given by R_msg_nai.
ACU_MODE_CALL_OUT_OF_ORDER | Allow or forbid calls on NAI/CONN_ID given by R_msg_nai/R_msg_conn_id.
ACU_MODE_CHANI_OUT_OF_ORDER | Allow or forbid usage of the B channel given by Acu_set_mode_data_chani.
ACU_MODE_ALL_NA_OUT_OF_ORDER | Allow or forbid calls on all NAIs.