Table 106. MTP 3 User Adaptation Layer (m3ua)
| Field | Field Name | Type |
|---|
| m3ua.affected_dpc | Affected DPC | Unsigned 24-bit integer |
| m3ua.congestion_level | Congestion level | Unsigned 8-bit integer |
| m3ua.error_code | Error code | Unsigned 32-bit integer |
| m3ua.info_string | Info string | String |
| m3ua.mask | Mask | Unsigned 8-bit integer |
| m3ua.message_class | Message class | Unsigned 8-bit integer |
| m3ua.message_length | Message length | Unsigned 32-bit integer |
| m3ua.message_type | Message Type | Unsigned 8-bit integer |
| m3ua.network_appearance | Network appearance | Unsigned 32-bit integer |
| m3ua.parameter_length | Parameter length | Unsigned 16-bit integer |
| m3ua.parameter_tag | Parameter Tag | Unsigned 16-bit integer |
| m3ua.reason | Reason | Unsigned 32-bit integer |
| m3ua.reserved | Reserved | Unsigned 8-bit integer |
| m3ua.routing_context | Routing context | Unsigned 32-bit integer |
| m3ua.status_info | Status info | Unsigned 16-bit integer |
| m3ua.status_type | Status type | Unsigned 16-bit integer |
| m3ua.traffic_mode_type | Traffic mode Type | Unsigned 32-bit integer |
| m3ua.unavailability_cause | Unavailability cause | Unsigned 16-bit integer |
| m3ua.user_identity | User Identity | Unsigned 16-bit integer |
| m3ua.version | Version | Unsigned 8-bit integer |