This object represents the NAI name. In order to provide roaming services, it is necessary to have a standardized method for identifying users. NAI is the user identity submitted by the client during network authentication. In roaming, the purpose of the NAI is to identify the user as well as to assist in the routing of the authentication request. Please note that the NAI may not necessarily be the same as the user's e-mail address or the user identity submitted in an application layer authentication.