Cấu hình bổ sung là đôi khi cần thiết để tận dụng lợi thế của dịch vụ. Ví dụ, cho phép tùy chọn xác thực nhất định sẽ không làm cho Bao gồm cả phụ thuộc vai trò khi thêm một dịch vụ vai trò Cài đặt Web Server (IIS) Vai trò | Lesson 1 Configuring Windows Media Services 459 Figure 8-22 Viewing an announcement Web page created using the Unicast Announcement Wizard The Edit Announcement Metadata page enables you to specify details related to the title and author of the content as well as copyright details. This information will be sent to users media player applications automatically. To verify the settings you have selected you can use the buttons in the Test Unicast Announcement window. This window is launched automatically after you have completed the Unicast Announcement Wizard. See Figure 8-23. The first Test button will provide direct access to the playlist and should open Windows Media Player and start playing the content. The Test Web Page With Embedded Player option Test button will launch Internet Explorer and load the test Web page if one was created . 460 Chapter 8 Configuring Windows Media Services Figure 8-23 Testing announcements in the Windows Media Services Administration application Using the Multicast Announcement Wizard When configuring publishing points that support multicast broadcasting of media streams you can use the Multicast Announcement Wizard to create the necessary files. The Specify Files To Create page enables you to select the method by which you will provide links to a multicast stream. See Figure 8-24. Figure 8-24 Creating a multicast announcement Lesson 1 Configuring Windows Media Services 461 The default option Multicast Information File .nsc And Announcement File .asx creates all the necessary files to provide access to the content. You can also create or re-create the .nsc or .asx files individually. The Automatically Create A Web Page option generates an HTML file that includes a link to the multicast content. The Stream Formats page enables you to define which streams will be made available through the announcement. You can provide access to different streams located on various publishing points either on the same server or on another Windows Media
