用户能通过一个机顶终端访问该服务器，以通过网络系统接收hd增强层。

User through a set-top box accesses the server in order to receive HD enhanced layer through a network system.

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认证、授权和计费(AAA)协议，如TACACS和RADIUS，当初是为了对终端访问服务和PPP拨号服务实行访问控制而开发的。

Authentication, Authorization and Accounting (AAA) protocols such as TACACS and RADIUS were initially deployed to provide dial-up PPP and terminal server access.

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这意味着一个部门中的终端用户可以访问和使用另一部门中数据集市中的数据。

This means that end users in one department can access and use the data in a data mart in another department.

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