Cu seeme reflector download




















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To connect for a one-to-one conference, you enter the IP address of the person with whom you are conferencing. Lists of public reflector sites and their IP numbers come with the CUSeeMe software and can be found in the "phone book.

Once you have the IP number you wish to connect to, you enter it and connect. Your screen will look like the one below. Both Macintosh and PC software yield windows that are fairly similar.

Flame wars and moderated newsgroups are not uncommon in the Usenet world. IRC gives users the ablity to kick and ban people from a channel.

CU-SeeMe rarely has any of that however simply because being able to see the other person no longer makes you anonymous. The people you are talking to can see what you look like, they can see where you're at, and most importantly, they can see your world. Thus, for the most part, people treat each other with respect and try to carry on a regular conversation with them. Besides, who knows? You might just see that guy you were acting obnoxious to on CU-SeeMe on the street someday.

Just like in real life, there will always be obnoxious and disinhibited people. Most of the problems arise from the "lurkers", the people who participate in CU-SeeMe without cameras. Although a lurker is cameraless, they can still send voice and participate in the chat window and in general, lurkers act in an annoying manner simply because they cannot be seen.

For the most part however, lurkers are ignored both vocally and in the text window. You can turn off the reception of audio for one particular person and you can ignore then in the text window. After awhile, most of them leave the reflector after realizing that there's no point in participating in a video based communications medium without any video.

Lurkers are not the only probem however. There are many people who do participate with cameras and take distasteful actions. What to do about them? There is one feature in CU-SeeMe that many people may wish they could use in real life. If you don't like someone you're looking at on the reflector, you can just close their window and never look at them again. Thus, this brings up one big factor and that is that people are constantly vying for attention on CU-SeeMe.

Why go out and spend a hundred bucks on a camera if no one is going to look at you? Does it make sense then to annoy everyone so much that no one will pull up your window and check you out?

Not really. As a result, most people will attempt to participate in a conversation favorable to all of the other members. The community on CU-SeeMe itself is mostly made up of people who join often and eventually become well known to the other participants.

These "regulars" are the one's who usually adopt the community standards set by the earlier regulars and inform the new users of what kind of behavior is expected. Those who don't adopt them are usually ignored. This provides a mostly friendly atmosphere in the community which is vital because it is a place that virtually anyone can join and participate in. The only criteria for membership in this community is that one have access to a computer and an Internet connection and know where the reflectors are.

It is no surprise then to find that the demographics of the CU-SeeMe crowd pretty much match the demographics of Internet users. It is full of computer literate males ranging from college to middle age who have been using the Internet for quite awhile. However, the female population is growing steadily, just as in the real life Internet population. Most Virtual Communities have some kind of stated purpose about what their goals are and what users will get out of it in the end if they participate long enough.

CU-SeeMe is relatively young however and it is still in the experiemental stages. Thus nothing has really been set in the way of concrete goals and purposes.

Most of the people participating in it are there to participate in something that is new, different, and most importantly, entertaining. In a way, those are the goals of the community: To maintain a friendly atmosphere where users can freely chat with each other and participate in a community that the participants find fascinating. That in itself is what builds the community to what it is today, a place where you can try out CU-SeeMe and where new users are welcome in hope of spreading the word and attracting more users.

Building friendships and offering advice is certainly welcome and encouraged while harrasment is not. This was certainly the implied value and norm of this community.

Answer: Tim Dorcey said: CU-SeeMe automatically adjusts its video transmission rate by varying the frame rate to adapt to the currently available bandwidth, as determined by packet loss reports returned by video recipients. Since the current version is only capable of generating a single resolution video stream, it averages the loss reports and adjusts the rate on that basis.

Hence, to the extent that they effect the average packet loss, video recipients with low capacity network connections will slow down the video for everybody. Unfortunately, there is a bug in the current release 0.

The version soon to be released fixes this bug and should produce more reasonable behavior, particularly if recipients on low capacity links close all but 1 or at most 2 video windows. Eventually, CU-SeeMe will be capable of generating a hierarchially encoded video stream so that the reflector can select a different transmission rate for each recipient.

Question: Why does a reflector sometimes continue to send to me even after I've disconnected? Answer: Tim Dorcey said: When you close a connection, the applications sends a repetative series of "Close Connection" messages. Hopefully, at least one of these gets through, but on a bad connection, they might all be lost.

Hence, the reflector will also kill a connection if it hasn't received anything from a participant for some time. Now, it is the nature of the CU-SeeMe protocol that the control packets used to maintain a connection are indistinguishable from those used to initiate it.

So, when an application closes a connection, it ignores anything from that same address for some period of time, to prevent any left-over maintenance packets from the original connection from being interpreted as initiation of a new connection.

The different time-out parameters are chosen so that, in theory, the reflector time-out should occur before the application begins accepting packets from that address again.

With a bad connection or a bogged down reflector, this logic apparently fails, and we need to re-examine it. As a work-around you can: Connect immediately to some other reflector, or Quit the application A similar problem that occurs with bad connections is that video windows that you close keep popping back open.

What happens here is you close a window, but then, as a result of packet loss, you hear nothing from that participant for some time and "time them out.



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