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Frequently Asked Questions
Why do I need an N-Way server when clients can view streams directly from a Telepresenter?The Telepresenter is primarily a content-encoding device and client viewing activity can potentially interfere with the CPU cycles or bandwidth needed to generate or stream the source material. Further, there is no provision in the Telepresenter for video-on-demand playback or digital rights management. Nor is there any systematic backup of encoded files. All these functions should be handled by a server such as N-Way.
We already are using a streaming server. Do I need to use N-Way?Any server which can properly play back industry-standard MPEG-4 files should be suitable for use. One such example is Apple's Quicktime Streaming Server which comes pre-loaded on an XServe.
How many streams can N-Way support?This depends on two primary factors: the bandwidth of the media stream and the bandwidth of the network connection to the N-Way. For example, if 100-Base-T is in use and the stream bandwidth is 1 Mbps, the number of concurrent users is approximately 80 (using ~80% efficiency). If Gigabit Ethernet is in use and the stream bandwidth is 500 kbps, the number of concurrent users is approximately 1650. There are two 1 Gbps ethernet ports on the N-Way server and you can feed more than one N-Way server with a Telepresenter, so practical audience limits can be quite large.
What digital rights management scheme is supported?N-Way supports directory based authentication utilizing facilities based in the RTSP protocol. The client player needs to recognize RTSP requests for a password.
I want to manage N-Way remotely. How can I do it?VNC server is available on the server. By installing VNC client on your PC you will be able to have complete access to the desktop of the server.
I established an FTP account on the server, but I can't get to the content directory. What's blocking it?The FTP program is very restrictive and limits user access to various directories. One solution is to make the home directory of the FTP account a sub-directory of the server's content directory.
The "Converter" function is stopped. I am unable to restart it.The "Converter" was only used for M2 Series products. It is not available for use on current versions of the server.
I can't reach the server on HTTP port 80. I get an error message.This port is reserved solely for streaming services. Normal web service is not provided for on this port.
FTP service is not very secure. How can I reduce intrusions?The server file /etc/hosts.allow should be edited to only allow FTP access from the sourcing Telepresenters. Add the IP address of each Telepresenter in use to the allowed hosts for FTP service.
What is the "Start auto upload" parameter on the FTP tab of the Telepresenter?This drop-down menu allows the user to select the time after which the FTP upload will commence. "After 12:00" means "Start any outstanding FTP uploads immediately after 12:00 noon", and not "Start the upload after 12:00 hours delay". FTP transfers can consume a lot of network bandwidth, so users may choose to upload these large files after-hours to conserve network bandwidth during the day. Also, FTP transfers can interfere with streaming activity from the Telepresenter, so "Immediately" may be a poor choice if there is a series of back-to-back streaming and recording sessions.
Have we answered your questions? Please email us at info@ncast.com if you would like to learn more. |
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