Communications
description
Transcript of Communications
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© Anthony J. Nowakowski, Ph.D.
Communications
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
Client-Servere-mail Model
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
POP3 Post Office Protocol
SMTP Simple Mail Transfer Protocol
IMAP Internet Message Access Protocol
MIME* Multipurpose Internet Mail Extensions
Just as we have TCP/IP as a common protocol for Internet communication, there are common protocols to handlee-mail called:
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
IMAP's ability to access messages (both new and saved) from more than one computer has become extremely important as reliance on electronic messaging and use of multiple computers increase, but this functionality cannot be taken for granted: the widely used Post Office Protocol (POP) works best when one has only a single computer, since it was designed to support "offline" message access, wherein messages are downloaded and then deleted from the mail server. This mode of access is not compatible with access from multiple computers since it tends to sprinkle messages across all of the computers used for mail access. Thus, unless all of those machines share a common file system, the offline mode of access that POP was designed to support effectively ties the user to one computer for message storage and manipulation.
IMAP vs. POP3
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
IMAP vs. POP3
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
Which selection should we make -
IMAP, POP3 (leave), or POP3
(don't leave)?
Which selection should we make -
IMAP, POP3 (leave), or POP3
(don't leave)?
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
? laptop
?
Remote
home?
? office(PC)
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
Web Interfaces
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
Web Interfaces
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
Web Interfaces
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
Web Interfaces
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
Note: The site to which we connect does NOT have to be the site from which we get our e-mail!
For example, I use Time-Warner Road Runner and check my e-mail at Buffalo State
or I could use my LAN connection at Buffalo State and check my e-mail at profsvet.com.
It all depends on how you configure your e-mail!
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
DiscussionGroups
((interest groups, listservs, mailing lists))
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
Open Moderated – messages are reviewed before posting
Announcement – subscribers can only receive messages
Digest – all messages included as text in one message
Discussion groups can be classified into for basic types:
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
What software is needed to participant in a discussion
group?
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
e-mail (client)
List server (server)Listserv
Listproc
Mailbase
Mailserv
Majordomo
Software
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
List Server
e-maile-maile-maile-mail
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
How do I communicate with a discussion group?
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
Usually there are two e-mail addresses associated with a discussion group:
the serverwith which you conduct business -subscribe/unsubscribe, list subscribers, etc.
the listto which you send and receive group messages
Note: you can also send an individual message to a group member.Note: you can also send an individual message to a group member.
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
How do I find appropriate discussion groups?
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
www.lsoft.com/lists/listref.html
tile.net
Web-based Search Engines
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
Now let's see if we can find and subscribe to a discussion group.
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
GROUPS(Usenet, Netnews, News)
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
What is a Newsgroup?
Like mailing lists, Newsgroups are another way to share information among Internet users via e-mail.
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
Newsgroups cover a wide variety of subjects which are divided into hierarchies
k12.ed.soc-studies.ww1
general specific
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
alt => alternativecomp => computersk12 => educationsoc => socialnews => network newsrec => recreationsci => sciencetalk => idle conversation
TOP EIGHT PREFIXES
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
In a discussion group, messages sent to the group will be sent to all members of that group.
However, messages posted to a newsgroup will be sent to a news server where you can access them at will.
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
What is a news server?
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
A place where newsgroups AND their messages are kept.
There are over 100,000 newsgroups world wide. Therefore, instead of being on one giant computer, the Newsgroups are distributed to many news servers.
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
News Server
x
postmessage
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
News Serverx
x
x
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
News Serverx
reply to message
x
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
News Serverx
postreply
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
News Servers
ISP's
Institutions
OSP's
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
Be Aware, Some organizations do NOT support Newsgroups!
BuffaloState
Our Class
Well, actually Buffalo State does. However it only supports a few limited ones, AND you must be
using a campus computer.
Well, actually Buffalo State does. However it only supports a few limited ones, AND you must be
using a campus computer.
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
How do I communicate with a news server?
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
As we have seen with other Internet components, there are protocols (http, smtp, pop3, etc.) that are required in order to communicate between the server and the client. For newsgroups, the NNTP (Network News Transfer Protocol) is used.
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
News reader (client)Agent 3.1TIN 1.6.2 Outlook Express
News server (server)
Software
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
Public Newsgroup Sites
news://msnews.microsoft.com
http://groups.google.com
http://www.teranews.com
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
Now let’s see how to add a newsgroup
and read messages
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
Forums/Bulletin Boards
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
Like Newsgroups, forums and bulletin boards are “active” ways to share information among Internet users, but these newer methods use your browser.
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
How do I find forums and bulletin boards?
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
The following are a couple of forum directories:
www.forumvirus.com
www.forumfox.com
You can also use an Internet search engine such as Google to find a forum/bulletin board. For example:
“jeep forum” or “jeep bulletin board”
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© Anthony J. Nowakowski, Ph.D.
We have already examined e-mail, so now consider the following Internet communications continuum.
e-mail chatrooms
text (typed)
audio(spoken)
video(seen)
instantmessaging
computer-computer
computer-phone
videoconference
phone-computer-phone(VoIP – Voice over IP)
EDC 601 Instructional Technologies
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
We will examine some of these topics (audio, and video) again when we discuss adding multimediaelements to Web pages. For now ourdiscussion will center on these in terms of personal communication.
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
You can join a chat room
www.mirc.com/irc.html
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
You can send/receivemessages.
www.icq.com
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
You can have a conversation
www.dialpad.com http://www.vonage.com
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© Anthony J. Nowakowski, Ph.D.
EDC 601 Instructional Technologies
You can see what’s going on
www.microsoft.com/netmeeting