# Number type values

The following table lists the valid calling, called, and redirecting number type values for ACU_CONN_IN, ACU_SETUP_REPORT_IN, and ACU_ALERT_IN messages.

These values are defined in isdnval.h.

Type | Description
--- | ---
N_TYPE_UNKNOWN (Default for all variants except 4ESS, VN6) | Unknown.
N_TYPE_INTERNATIONAL | International number.
N_TYPE_NATIONAL (Default for 4ESS and VN6 variants) | National number.
N_TYPE_NET_SPF | Network specific number.
N_TYPE_SUBSCRIBER | Subscriber number.
N_TYPE_LOCAL | AT5 local (directory) number.
N_TYPE_ABBREVIATED | Abbreviated number.