What is the user identifier of the AR router

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User identifiers include device IDs and user IDs.
A device ID is the ID of a device. The device can be a plain old telephone service (POTS) phone or a user agent device, such as an IP phone or software.
A user ID is the number of a user and owner of a device ID. It identifies a user. A user ID and a SIP server domain constitute a URL. A device ID can belong to multiple user IDs.
Each user has a fixed user identifier that is bound to a unique device ID. Usually, a user identifier is the global number (seven or eight digits in China), that is long number of a user. Users can dial long numbers to call each other, which is common.
Internal numbers or private numbers are provided for users in the same group, such as an enterprise, company, group organization, school, or hotel. Users can dial internal numbers easily.

Other related questions:
What are user identifiers
User identifiers include device IDs and user IDs. A device ID is the ID of a device used by users. The devices can be a plain old telephone service (POTS) phone or a user agent device, such as IP phones and software. A user ID is a unique number assigned to a user. A user ID is the owner of a device ID, and indicates a user's identity. A user ID and a Session Initiation Protocol (SIP) server domain constitute a URL. A device ID can belong to multiple user IDs. Each user has a fixed user identifier, which is bound to a unique device ID. Usually, a user identifier is the global number or long code for the user. Users can dial long codes to call each other, which is the common dial-up mode. Internal numbers or private numbers are provided to users inside the same group, such as an enterprise, company, group organization, school, or hotel. Users in the same group can dial each other's short numbers or private numbers.

Description of user levels on AR routers
User levels on AR routers are as follows: You can configure different user levels to control access rights of different users and improve device security. There are 16 user levels numbered from 0 to 15, in ascending order of priority. Visit level-0: It is used for network diagnosis, access to the external device, such as ping, tracert, and Telnet. Monitoring level-1: It is used for system maintenance, including display commands and other commands. Some display commands are unavailable at this level. For example, the display current-configuration and display saved-configuration commands are level-3 management commands. Configuration level-2: Service configuration commands. Management level-3 to 15: They are used to control basic system operations, including system file, FTP/TFTP download, user management, command level setting, and debugging commands. User levels correspond to the command levels. Users can use only the commands at the same or lower level than their own levels. By default, users logging in from the console port can run level 15 commands. By default, the user level of other login modes is 0 (visit level), that is, after the user logs in to a device, the user can only run the commands at level 0, including ping, tracert, and other commands for network diagnosis.

WLAN security of AR routers
WLAN security is as follows: User access security: Link authentication, access authentication, and data encryption are used to ensure validity and security of user access on wireless networks. Service security: This feature protects service data of authorized user from being intercepted by unauthorized users during transmission. For details, see WLAN Security Configuration.

How to configure a user level on an AR router
Methods of configuring user levels vary with specific scenarios (command lines):
- Configure a user level for a user.
[Huawei] aaa
[Huawei-aaa] local-user user1 privilege level 15  //Set the user level of user 1 to 15.  
-  Configure a user level for all users under a domain.
[Huawei] aaa
[Huawei-aaa] service-scheme sch1
[Huawei-aaa-service-sch1] admin-user privilege level 15  //Set the user level of all users under a domain to 15.  
-  Configure a user level for all users who log in through a page (take the VTY view as an example).
[Huawei] user-interface maximum-vty 15
[Huawei] user-interface vty 0 14
[Huawei-ui-vty0-14] user privilege level 15  //Set the user level in the VTY 0 to VTY 14 views to 15.
The preceding command is used to modify a user level as well. This command overwrites preceding operation results. Therefore, if this command is run multiple times, the last-time operation prevails.
If the user level configured on a page conflicts with the corresponding operation permission of a user, the operation permission prevails.

Configure a user level in web mode.
1.  Choose User Management > User Management.
2.  Click an icon of a desired local user from the user list.
3.  Enter corresponding content.
  a.  The super administrator enters Access level in order to modify the access level of other users.
  b.  To change Access level from the common user to the administrator (common administrator, enterprise administrator, or super administrator), enter New password and confirm Confirm password.

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