|
|
This chapter describes how to administer IP/TV Server. Topics covered include:
IP/TV Server multicasts, records, or transfers scheduled programs, and unicasts on-demand programs according to the schedules defined in the IP/TV Content Manager. In order for the IP/TV Content Manager to direct the IP/TV Server, you must set a few options. For information on this option, see the "Setting IP/TV Server Options" section in this chapter.
IP/TV Server has seven modes of operation:
This chapter provides instructions for administering both prerecorded file and live-capture servers.
A given machine can operate both as a file server and as a live-capture server, subject to the following limits:
See the "Live Capture and File Format Reference" appendix which lists video formats, audio formats, recommended settings for audio and video codec parameters, and capture card settings.
You can start IP/TV Server in the following ways:
By default, the IP/TV Server launches programs automatically according to the schedule set by the Content Manager.
Step 1 Click Settings>Configure IP/TV Server to view the default settings.
Step 2 Click the Scheduler tab. The following option is selected by default: Automatically Start IP/TV Server after system reboot. On Windows NT, you must login for the program listing to appear. If unchecked, the application will not restart automatically after a system reboot.
See the "About the IP/TV Program Listings Window" section later in this chapter for a description of the window that appears when IP/TV Server starts up.
To start IP/TV Server manually, locate and click the program icon for IP/TV Server.
In most cases, the IP/TV Server icon is normally installed in the start menu program folder Cisco IP/TV Server, and on the desktop. If you specified other locations during installation, review the information you entered during the installation procedure. See the "Performing a CD-ROM Installation" section in the "Installing IP/TV Server" chapter.
The Program Listings window, which appears when you start IP/TV Server, only displays programs for which this server is responsible. The program listing can include scheduled, on-demand, and manually launched programs. Programs served by WMS will not appear in the IP/TV Server Program Listings window.
Figure 6-1 shows an example of the Program Listings window with a listing of only scheduled programs.
The listing is downloaded from the Content Manager each time IP/TV Server starts up and again at the interval specified in the IP/TV Server configuration options dialog box. The default interval is 30 minutes. See the "Setting IP/TV Server Options" section later in this chapter for information about setting the update interval.
The downloaded listing is contained in the file guide.tvg. If the Content Manager is not accessible for any reason (for example, if the system is down), IP/TV Server continues to use its local file.
By default, all listed programs are enabled. The server will multicast the programs according to the schedule set by the Content Manager.
When IP/TV Viewer requests an on-demand program, the program listing appears in the Program Listings window.
Figure 6-2 shows an example of the Program Listings window with a listing of only on-demand programs.
Note that the following options are set for on-demand programs in the Preferences page of the IP/TV Content Manager:
To set these toolbar options from the Program Listings window, click Settings>Customize Toolbar.
Table 6-1 describes the parameters and options you can set in the Customize dialog box:
| Parameter | Description |
|---|---|
Toolbar | Lists all the toolbars. |
Toolbar name | Lists the selected toolbar. |
Show Tooltips | If checked, displays a toolbar button's tool tip. |
Table 6-2 lists the commands on the Program Listings window menu bar.
| Menu | Command | Description |
|---|---|---|
File | Displays an Open dialog box that you can use to locate and select the session description file for the program you want to launch manually. | |
| Prints the program listing as ASCII text. The printout includes the program name, start and stop date and time, description, and contact information as entered in the Content Manager. | |
| Configures the printer. | |
| Exits IP/TV Server. | |
Settings | Configure IP/TV Server
| Sets IP/TV Server options. See the "Setting IP/TV Server Options" section later in this chapter. |
| Maintenance Mode | Enables/disables IP/TV Server from serving upcoming or future scheduled programs or meeting new requests for on-demand programs. Existing programs will continue to play until completed. |
| Customize Toolbar | Displays the Toolbar Customization dialog box. |
View | Enable All | Enables all listed programs. Multiple programs can also be enabled by holding down the Shift or Ctrl keys while clicking to select the desired programs, then right clicking and selecting Enable Selected. |
| Enable Selected | Enables the selected programs. Programs can also be enabled by double clicking on a program listing. Note that you can also enable programs by right clicking on a disabled program and selecting Enable/Disable Program. |
| Disable All | Disables all listed programs. Programs that are active at the time of disabling are terminated, and do not launch at the next scheduled time. Programs that are not active at the time of disabling do not launch at the next scheduled session. |
| Disable Selected | Disables the selected program. The selected program that is active at the time of disabling is terminated, and does not launch at the next scheduled time. A program that is not active at the time of disabling does not launch at the next scheduled session. Note that you can also disable programs by right clicking on an active program and selecting Enable/Disable Program. |
| Program Information (Ctrl+I) | Displays the Program Information window. You can also access Program Information Windows by right clicking on an active program and choosing Program Info. |
Listing | Show | Selects display of on-demand, scheduled, manual, or active programs, and their listings for today, this week, this month, or this year. |
| Sort Listing | Sorts program by program name, channel, start or end times. |
| Refresh Listing | Downloads a new copy of the program listing. |
Contents | Displays the table of contents of the online help. | |
| Using Help | Displays information about using Windows Help. |
| About IP/TV Server | Displays IP/TV Server version information. |
Table 6-3 lists the tools and icons available on the Program Listings window. If you place your mouse pointer over a tool, a yellow box (a tool tip) pops up with a description of the tool.
| Icon | Tool | Description |
|---|---|---|
| If present in the Session (left) column and green, indicates that the program is enabled and active. If gray, the program is enabled but not active. If red, the program is disabled. | |
| If present, indicates that an on-demand program is active. | |
| Opens a dialog box that you can use to locate and select the session description file. See the "About Session Description Files" section in this chapter for the program you want to launch manually. | |
| Downloads a new copy of the program listing from the Content Manager. | |
| Enables or disables serving of the selected program. A program that is active at the time of disabling is terminated, and does not launch at the next scheduled time. A program that is not active at the time of disabling does not launch at the next scheduled session. | |
| Displays program information for the selected program. (Figure 6-4 shows an example of a Program Information window.) | |
| Maintenance Mode | Enable or disables IP/TV Server from serving upcoming or future scheduled programs or meeting new requests for on-demand programs. Existing programs will continue to play until completed. |
| Prints the program listing as ASCII text. The printout includes the program name, start time, end time, description, and contact information as entered in the Content Manager. | |
| Displays online program listings help. | |
| Show Today's Listings button | Displays the program listings for today. |
| Show This Week's Listings button | Displays the program listings for this week. |
| Show This Month's Listings button | Displays the program listings for this month. |
| Show This Year's Listings button | Displays the program listings for this year. |
| Show OnDemand Programs button | Displays on-demand programs in the Program Listing Window. |
| Show Scheduled Programs button | Displays scheduled programs in the Program Listing window. |
| Show Manual Launch Programs button | Displays manually launched programs in the Program Listings window. |
| Show Active Programs button | Displays active programs in the Program Listings window. |
| Displays messages reflecting the current status of the IP/TV Server Program Listings window. |
The Configure IP/TV Server dialog box allows you to configure server options. To set options from the Program Listing window, click Settings>Configure IP/TV Server.
The following subsections detail the options available on the Server, Scheduler, Windows, and OnDemand tabs.
Use the Server tab to set options for the Primary and Secondary Content Manager. Table 6-4 describes the options you can set in the Server tab dialog box.
| Option | Description |
|---|---|
IP/TV CM Host (Primary and Secondary) | Specifies the IP address or hostname of the Content Manager from which the program listing is obtained, in addition to any proxy server data. |
Port No. | Specifies the HTTP server port number. The default value is 80. For firewall purposes, this may be set to some number other than 80. |
Use Proxy Server | Specifies the name and port number of the Proxy Server. |
IP/TV Server RTSP Port | Specifies the RTSP port number. The default port setting is 85541. |
Use SDP Listener | If checked, IP/TV Server obtains program listings from the SDP listener or LocalHost. |
Use the Scheduler tab to set Server launch and polling options. Table 6-5 describes the options you can set in the Scheduler tab dialog box.
| Option | Description |
|---|---|
Automatically start IP/TV Server after system reboot | Automatically starts IP/TV Server after system reboots and before user login. |
Enable Auto-launch | If checked, causes the server to launch programs automatically according to the schedule set by the Content Manager. The default is checked. |
Poll for Auto-launch | Sets the interval (in seconds) after which IP/TV Server checks for programs it is scheduled to launch. The default is 10. The allowed range is 10 to 40. |
Poll for Program Listing every | Sets the interval (in seconds) after which IP/TV Server downloads a new copy of the program listing. The default is 1800. The allowed range is 100 to 1,000,000. |
Use the Windows tab to customize headers in the Program Listings window, and to set Program Details windows to launch as hidden, minimized, or normal. Table 6-6 shows the options you can set in the Windows tab dialog box:
| Option | Description |
|---|---|
Select the Fields: | Displays the headers that currently appear in the Program Listing Window. To remove a header, select it and use the arrow to move it to the Available Fields panel. |
Available Fields | Displays a list of the fields that are available to be used as headers in the Program Listings window. To add a header to the Program Listing window, select it and use the arrow to move it to the Select the Fields panel. |
Show Program Details As | Use the radio buttons to set session windows to launch minimized, hidden, or normal. Specify hidden for optimal performance and an uncluttered desktop, and launch Program Details windows as needed by double clicking on the active program in the Program Listings window. |
Use the OnDemand Tab to set options for on-demand files. Figure 6-3 shows an example of the OnDemand tab dialog box.
Table 6-7 shows the options you can set in the OnDemand tab dialog box.
| Option | Description |
|---|---|
MediaRoot Path | Indicates the path where the server manages media files for all programs. |
Enable Load Balancing | If checked, defines the server as part of the on-demand cluster. If unchecked, IP/TV Server will not be able to received video on-demand requests from the Content Manager. |
Program Information windows display information about a selected program. You can access Program Information windows in four ways:
Figure 6-4 shows an example of a Program Information Window.
Table 6-8 lists the tools available on the Program Information window.
| Icon | Tool | Description |
|---|---|---|
| Enables serving of the elected program. | |
| Disables serving of the selected program. |
When IP/TV Server launches a scheduled or on-demand program, the Program Details window is either hidden, launched minimized, or launched in normal fashion. Click Settings>Configure IP/TV Server>Windows on the Program Listings window to set this option.
Scheduled programs can serve either prerecorded files are live-capture, but there are small differences in the Program Details window. The following sections describe the prerecorded file and live-capture Program Details windows, and the commands, tools, buttons, and indicators available on the windows.
The Program Details window can display information about the video, audio, and web presentation portions of the program. No video image is displayed.
Figure 6-5 shows an example of a Program Details window for a prerecorded file.
Table 6-9 lists the commands available on the Program Details window menu bar.
| Menu | Command | Description |
|---|---|---|
File | Switch to Program Listings (Ctrl+W) | Changes the active window from the Program Details window to the Program Listings window. |
| Closes the current window. | |
Video | Plays or resumes the current program. | |
| Pauses the current program. | |
| Stops the current program. | |
| Show Preview | Toggles between showing or hiding the preview window. (Live-capture only.) |
Window | If checked, the Program Details window is always on top, even if it is not the active window. | |
| Stats Window | Displays video, audio, SlideCast, and Web Presenter information. |
Contents | Displays the table of contents of the online help. | |
| Using Help | Displays documentation about using Windows Help. |
Table 6-10 lists the icons and button and indicators available on the Program Details window.
| Icons | Button | Description |
|---|---|---|
| Plays the current program. This button toggles to pause a program. | |
| Pauses the current program. This button toggles to resume playing a program. | |
| Stops the current program. | |
| An integer representing the number of milliseconds between each PDU transmit.1 | |
| Applies to prerecorded file server only. When checked, automatically repeats the current file. Overrides the repeat schedule set in the Content Manager. |
| 1Do not alter this value except under the direction of Cisco Systems Technical Support. |
Table 6-11 describes the program statistics displayed in the Program Details window. The display is the same for both prerecorded programs and live-capture programs.
| Statistic | Description |
|---|---|
Specify Frame Rate | Allows the maximum frame rate to be modified. (Only available on live-capture or MPEG file programs.) |
Frame Rate | Indicates the frames per second of data being transmitted on the network. |
Data Rate | Indicates the amount of data in kbps being transmitted on the network. |
Duration | Indicates the elapsed time for the current program. |
Dimensions | Indicates the video image size in pixels (width and height). |
Color Depth | Indicates the color depth in bits. |
Video Codec | Indicates the compression format of the video data. |
Video IP | Shows the IP multicast or unicast address used by the video packet stream. |
Video Port | Shows the UDP port number used by the video packet stream. |
Video TTL | Indicates TTL setting for the video data. |
Audio Sample Rate | Indicates sampling rate in Hz of audio data. |
Audio Format | Indicates which audio codec has been used to compress audio data, or displays the audio format for uncompressed audio. |
Audio IP | Indicates IP multicast address used by the audio packet stream. |
Audio Port | Indicates the UDP port number used by the audio packet stream. |
Audio TTL | Indicates the TTL setting for the audio data. |
Driver Info | Indicates which Cisco driver is processing the video and audio data, and indicates the driver version number. |
File | File path of media file being served (if applicable.) |
Presenter Status | Current actions of Web Presenter. |
Presenter URL | Current URL Web Presenter is using. |
The video capture device configuration options are set in both the IP/TV Server using the Capture Program Details window and the video capture card. After using the IP/TV Content Manager to create a program, the IP/TV Server uses the default capture device settings, which can be adjusted during a session. The configuration options depend on the capture card you are using.
Figure 6-6 shows an example of the Capture Program Details window.
The Capture Program Details window displays information about the streams present in a program. Some capture devices will allow you to preview the audio/video source in the Video Image field when you click Video>Show Preview.
For non-MPEG devices, IP/TV Server provides the following two sets of configuration options to let you finetune a live-capture program using an interface to the IP/TV multimedia networking software:
Follow these steps to set audio format options (non-MPEG):
Step 1 On the Capture Program Details window, click the Pause or Stop button to pause or stop the current program.
Step 2 Click Configure. The Capture Device Configuration window appears.
Step 3 In the Type list, select Audio Format and click Configure. The Audio Format Setting window appears.
Step 4 Adjust option values as appropriate, and click OK. Depending on the encoding, Sample Rate and Channels selected will vary.
Step 5 Click Close to save settings.
Step 6 On the Capture Program Details window, click Play to play the program.
See Table A-2 and Table A-3 for a list of available audio formats and their approximate bandwidth requirements and Realtime Transport Protocol (RTP) payloads. The default values for a given program are set when the program is defined in the Content Manager.
Follow these steps to override the default capture settings:
Step 1 On the Capture Program Details window, click Pause or Stop to pause or stop the current program.
Step 2 Click Configure. The Capture Device Configuration window appears.
Step 3 In the Type list box, select Capture Settings and click Configure.
Step 4 Adjust option values as appropriate, and click OK.
Table 6-12 describes the capture device configuration options.
| Option | Default | Description |
|---|---|---|
30 (Content Manager setting) | Determines the maximum frame rate used by the IP/TV Server for this session. Higher values increase video quality but consume more bandwidth on the network. This option can be used to limit network bandwidth consumption. | |
1150 kbps (Content Manager setting) | Determines the maximum amount of data that the IP/TV Server will transmit on the network for this session (including both audio and video streams). This option can be used to limit network bandwidth consumption.1 | |
5 | Determines the number of buffers used by the capture device. Low values improve synchronization. Some capture devices may require higher values. | |
Unchecked | Determines whether the capture device uses DOS memory (when checked) or extended memory (when unchecked). For some capture devices, DOS memory may be faster; refer to the documentation shipped with the capture device. | |
Checked | Determines whether the session includes both video and audio (when checked) or video only (when unchecked). | |
Checked | Tells the server whether the video device connected to the capture card uses U.S. and Japanese standard NTSC format (when checked) or European standard PAL format (when unchecked). | |
8 | Determines the H.261 compression quality level. Typically, users perceive very little difference between a value of 7 and higher values. High values consume more network bandwidth. | |
--- | Allows you to fine tune the SlideCast server settings. |
| 1If you are sending the traffic over a link, you will need to compensate for the increase in data rate (up to 20 percent) caused by the overhead of different link layer framing. |
For MPEG1 live capture, the following configuration options are specific to the FutureTel card only. For the Optibase card configuration options, refer to the "MPEG2 Capture Devices" section later in this chapter.
We recommend that you use the default settings, except for the configuration settings described in Table 6-13.
| Option | Recommended Setting | Description |
|---|---|---|
System | On the System Stream Configuration window, choose the recommended setting from a list of multiplexer settings. This is a required setting. | |
1,070,000 | On the System Stream Configuration window, we recommend that you enter 1,070,000 for the video bit rate. This is a recommended setting. You may experiment with this setting and the audio setting.1 | |
64,000 | On the System Stream Configuration window, we recommend that you select 64,000 for the audio bit rate. This is a recommended setting. You may experiment with this setting and the video setting. | |
Total Bit Rate | 1,150,000 | Although the system will accept a bit stream of up to 2.5 million bits per second, this will not necessarily improve the quality of your session and may degrade the performance of this and other programs depending on your client/server machines and your network configuration. |
| 1See the "Live Capture and File Format Reference" appendix for recommended settings. |
On the capture card, specify whether the video source is either standard NTSC format or standard PAL format. Refer to the instructions provided with the specific capture card.
When you manually set the Format option on the PrimeView Video Configuration window, always set the Format option to standard NTSC Format option (checked) for both U.S. and Japanese devices and for the European standard PAL format.
 | Caution Do not install any other separate software or drivers that came with the Optibase card. |
To set the properties of an Optibase MPEG capture card, click Configure after stopping a capture session. The dialog box as shown in Figure 6-7 appears.
The title in the dialog box indicates the name of the capture card IP/TV is configuring. Table 6-14 describes the important capture card settings. All other settings are geared toward advanced users and should not be changed unless directed by a Cisco technical representative.
| Option | Default | Description |
|---|---|---|
Video Detect | --- | Detects the color system (NTSC/PAL) of the video signal at the selected video input connector (composite/svideo). |
Video Input options | --- | Indicates settings for properties of the video input signal and for any processing that needs to be completed on the video input signal before it is encoded. |
Video Output Rate | --- | Indicates the target bitrate for just the video stream. This is value is computed from the specified network and audio bitrates. |
Video Output Rate Microcode, Encoding Resolution | --- | The Microcode along with the encoding resolution determines whether the video is encoded to MPEG1, MPEG2 Full D1, or MPEG2 Half D1. |
Audio | --- | Indicates the type of audio source. For example, Unbalanced, Digital, or Balanced. |
Left and Right Gain | --- | Determines the gain applied to the left and right channel of the input audio signal before it is encoded. |
Gain Lock | --- | If checked, locks the Left and Right Gain values so that if the value is changed, the other one also changes. |
Audio Rate | 224 kbps | Selects the target bit rate for the audio stream. This rate is used along with the specified network bit rate to compute the target bitrate for the video stream.1 2 |
By default, all programs listed in the Program Listings window are enabled, that is, IP/TV Server will launch the programs and multicast the streams, SmallCast forward, and record according to the schedule set by the Content Manager.
If you need to prevent a program from being launched for some reason (for example, if a capture device fails, or a prerecorded file is deleted by accident and must be restored from backup), you can prevent the server from trying to multicast a scheduled program by disabling the program.
When a program is disabled, the session icon in the left-most column of the listing for the program changes from green to a red box.
To disable a program, use one of these procedures from the Program Listings window:
System administrators may diagnose problems with IP/TV on the client computer, network, MBone, or elsewhere using IP/TV Event Log Viewer and diagnostics windows in conjunction with Cisco Systems Technical Support.
IP/TV Event Log Viewer ships with all three IP/TV components: IP/TV Server, IP/TV Viewer, and IP/TV Content Manager. This is an advanced diagnostics tool and is hidden from the user of IP/TV Viewer. For IP/TV Server, you can access it by clicking the shortcut from the Start menu or by clicking psreport.exe in the Program File directory.
For information on solving a problem using IP/TV Event Log Viewer, contact Cisco's Technical Assistance Center (TAC).
In most cases, you will want IP/TV Server to operate automatically so that the server multicasts programs according to the schedules set by the Content Manager. However, there might be circumstances under which you want to launch a program manually.
The following sections describe the procedures for launching prerecorded .avi, .rtp, and MPEG1 files and live-capture programs manually.
If no session description has been created, you must create one before it can be selected. See the "About Session Description Files" section later in this chapter.
Follow these steps to manually launch a prerecorded file:
Step 1 On the Program Listing window, click File>Open, or click Launch Session. The File Open dialog box appears.
Step 2 In the Files of Type list, click File Server Session. A list of all available prerecorded file session description files (.svr) appears in the File Name list. See the "About Session Description Files" section later in this chapter.
Step 3 Locate and select the session description file for the program you want to launch.
Step 4 Click OK to launch the program.
Follow these steps to manually launch a live-capture program:
Step 1 On the Program Listings window, click File>Open, or click Launch Session. The File Open dialog box appears.
Step 2 In the Files of Type list, click Capture Session. A list of all available live-capture session description files (.cap) appears in the File Name list box. See the "Creating and Editing Capture Server Session Description Files" section later in this chapter.
Step 3 Locate and select the session description file for the program you want to launch.
Step 4 Click OK to launch the program.
Session description files contain all the information about a program that IP/TV Server needs to know in order to multicast the program.
For any program that is set up by the Content Manager, the session description file for the program is created automatically by the Content Manager, and you need not create or modify the file.
For any program that you want to launch manually, without scheduling it through the Content Manager, you need to create either a prerecorded or live-capture server session description file for the program.
When you installed IP/TV Server, a file named sample.svr was installed in the IP/TV Server directory, c:\Program Files\Cisco Systems\IPTV Server. This is the name of the default directory during installation. The name of your directory may be different. The format of this file is based on the draft specification for the IETF Session Description Protocol (SDP).
Use this file as a template when you need to create a .svr file for a new session. You can simply copy sample.svr to a new filename and edit fields in the new file. These fields supply IP/TV Server with the IP addresses and UDP port numbers associated with the session, the IP Multicast Range of the session, the pathname of the file to be multicast, and the action to be taken by the server.
For a discussion of IP multicast addresses, see the "Choosing IP Multicast Addresses and UDP Port Numbers" section later in this chapter.
Example 6-1 shows an annotated copy of sample.svr, and identifies the fields you may edit. Lines beginning with a semicolon (;) are comments referring to the subsequent line of the file. Do not modify any fields in the file except those indicated.
When you installed IP/TV Server, a file named sample.cap was installed in the IP/TV Server directory, c:\Program Files\Cisco Systems\IPTV Server. This is the name of the default directory during installation. The name of your directory may be different. The format of this file is based on the draft specification for the IETF SDP.
Use this file as a template when you need to create a .cap file for a new session. You can simply copy sample.cap to a new filename and edit fields in the new file. These fields supply IP/TV Server with the IP addresses and UDP port numbers associated with the session and the IP Multicast Range of the session.
Pay particular attention to the IP Multicast Range field which specify the TTL for multicast packets.These two fields (one for the video packet stream, the other for the audio packet stream and SlideCast) determine how far multicast session packets will be forwarded by routers on the network. You can use these fields to limit traffic loads on the network, or to prevent multicast session traffic from reaching the Internet.
Example 6-2 shows an annotated copy of sample.cap, and identifies the fields you must edit. Lines beginning with a semicolon (;) are comments referring to the subsequent line of the file. Do not modify any fields in the file except those indicated.
For information on IP multicast addresses and ranges, and guidelines on limiting traffic on networks, see the "Administering the IP/TV Content Manager" chapter. You can also refer to the Multimedia Networking Concepts Guide, which is located at http://www.cisco.com/iptv/. This guide is available in PDF format.
This section provides some guidelines to use when choosing IP addresses and UDP port numbers for multicast sessions.
These procedures apply to both prerecorded file and capture server session description files. See Example 6-1 and Example 6-2 for sample server session description files.
Follow these steps to set up a session description file that multicasts only a video packet stream:
Step 1 Fill in the UDP port field in the mvideo line.
Step 2 Fill in the IP address field in the cvideo line.
Step 3 Set the UDP port field in the maudio line to zero.
Step 4 Set the IP address field in the caudio line to zero.
Follow these steps to set up a session description file that multicasts only an audio packet stream:
Step 1 Fill in the UDP port field in the maudio line.
Step 2 Fill in the IP address field in the caudio line.
Step 3 Set the UDP port field in the mvideo line to zero.
Step 4 Set the IP address field in the cvideo line to zero.
When only one prerecorded media (audio or video) are presented, the session will be an audio only or video only session.
The IP/TV Server can automatically prune transmission of data based on whether there are any clients tuned in to a particular program. This feature saves network bandwidth by allowing more programs to be transmitted simultaneously whenever it is likely that one or more of the programs will not have any listeners at a given point in time. It works on a "per destination" basis where a destination is either the multicast address for the session or one of the unicast destinations.
You must disable this feature if a server is being used to send to one or more destinations that do not have a backchannel, for example, a one-way satellite broadcast. To disable this feature, comment in (delete the semicolon preceding the entry) the following entry in the iptv.ini file:
[msock]
RTPSourcePruning=off
By default this feature is turned on. You can reenable it by changing off to on, or by removing the entry entirely. The feature is either on or off for a particular server for all programs (and, therefore, all destinations) at once.
If you need some programs pruned and others not, we recommend two separate servers.
Posted: Thu Oct 28 16:11:30 PDT 1999
Copyright 1989-1999©Cisco Systems Inc.
