Internal IP, Packet Loss, Endpoints, Oh My! Tuesday, July 14, 2009
Posted by Rebecca Morrison in Blogroll, Blogs, Links, Tech PD, Videoconferencing.Tags: videoconference, MOREnet, Janine Lim, Videoconferencing Out on a Lim, network address translation, codec
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I was reading Janine Lim’s blog, Videoconferencing Out on a Lim (see our blogroll) and came across a post entitled: A Little VC Technical Knowledge. I’d like to share an excerpt from her post with you- it’s very good, basic information for those interested in videoconferencing. For those of us who are “videoconferencing veterans” it’s good to read & remember what can trip people up as they start out. Thanks, Janine, for taking the time to put this together. To read her full post, click here.
“Some basic concepts (written in my [Janine's] lay language!) include:
- IP numbers that start with 10. are internal addresses and people outside can’t call them.
- Most videoconferences are at 384K. Compare that to the amount of available bandwidth on a typical day to know if you’ll be able to sustain a “good enough” videoconference.
- Packets are little pieces of info sent over the network. In email the packets eventually get there, get together, and give you an email. But in VC, if the packets don’t show up in time, they get thrown away. Hence, packet loss. Usually 2% packet loss or higher becomes intolerable.
- A NAT is network address translation, and both the codec/endpoint and the firewall/router need matching settings for NAT to work. This is because the endpoint/codec needs that info to set up the packets properly.
- An IP videoconference call is set up on port 1720. After that the two codecs negotiate which ports to use for the audio and video streaming. This is what’s going on when it rings & rings.
- If you’re using a gatekeeper, ports 1718 and 1719 are used to find and register with the gatekeeper. More on ports here.
- Two great resources to learn more about H323 and your network are: H323 and Firewalls from MOREnet in MO; and UKERNA/Janet Security Guide for H323 from the UK.”
Another Free VC Opportunity! Friday, April 3, 2009
Posted by Rebecca Morrison in Collaborations, Distance Learning, Videoconferencing.Tags: bridge construction, engineering, Missouri River, MODOT, MOREnet, RoundTrips
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RoundTrips is happy to invite your students to join them, the Missouri Department of 
Transportation, and MOREnet for “Bridge Construction 2: Surface Structure” on April 17 at 9:00 a.m. and 10:00 a.m. Central Daylight Time. This free program, the seventh in their ten part series of videoconferences highlighting MODOT’s construction of a new bridge over the Missouri River at Glasgow, Missouri, will focus on the work involved with creating the surface structure of the new bridge. More information about the entire series of bridge programs can be found at http://mobridge.more.net.
If you have any questions about the program, please don’t hesitate to get in touch with RoundTrips. If you’d like to enroll for the program, please contact them via phone or e-mail.
Bridge Construction 2: Surface Structure
Date: April 17, 2009 | Grade Levels: 5-12
Times: 9 to 9:50 a.m. and 10 to 10:50 a.m. Central Time
Cost: No Fee
The bridge has been designed, public hearings have been held, and funding has been arranged. Construction is well underway with superstructure built for the bridge’s approach ramps and additional superstructure being built over the river itself. Now it is time to begin creating the surface structure. Join us live from the construction site of the new bridge going over the Missouri River at Glasgow, Missouri.
What are the steps in creating the surface structure? What materials are used? How is the structure welded together? How is the surface structure for the bridge connected to the bridge support system? What elements are pre-fabricated and what is created on site? How does the installation occur? What are the careers involved in building a bridge? For the answers to these and other questions, join RoundTrips for our sixth program in our continuing series of programs produced with the Missouri Department of Transportation as they build a new bridge over the Missouri River at Glasgow, Missouri. Interact with construction personnel as they share how they are bringing the design plans to life.
RoundTrips & MOREnet Present Internet Safety VC 2009 Friday, April 3, 2009
Posted by Rebecca Morrison in Classroom Technology, Collaboration, Distance Learning, Internet safety, Videoconferencing, Web 2.0.Tags: Cyber Bullying, identity theft, interactive videoconference, Joe Laramie, learning tool, Missouri’s Internet Crimes Against Children Task Force, MOREnet, Network Security, online predators, online safety, RoundTrips
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There is no doubt we now live in an “Internet Age.” At the click of a mouse, you can e-mail hundreds of people simultaneously, buy that long-desired vintage automobile, or create a personal profile to share with the world. With unlimited opportunities, cyberspace may well have become the new “final frontier.” How best can we explore this frontier? How can we minimize risk and maximize safety? How can we help students be secure in their Internet activities? These are important questions, and we invite you and your students to participate in this important discussion over videoconference with RoundTrips. Students will interact with a variety of experts in the field including Joe Laramie, Director of Missouri’s Internet Crimes Against Children Task Force, and they will also have the chance to share with each other as well.
Topics in this free distance learning opportunity include online predators, cyber-bullying, identity theft and other Internet-related issues. “This is such an important issue – it is absolutely critical for kids, parents and community members to be on the same page with regard to online safety,” said Randy Raw, Manager of Network Security at MOREnet. “The Internet is a fantastic learning tool, but like any tool, people need to understand what the risks are and how to use it safely.”
This topic is popular, and interactive videoconference space is limited so contact RoundTrips early to enroll your students!
Date: Tuesday, April 28, 2009
Times: 11 to 11:50 a.m. CDT, 12 to 12:50 CDT, 1 to 1:50 p.m. CDT
Grade Level: 6-12
Cost: NO CHARGE
MOREnet, MODOT & RoundTrips Present: Bridge Construction 1 – Superstructure Monday, March 23, 2009
Posted by Rebecca Morrison in Classroom Technology, Collaboration, VLC Programs.Tags: bridge, construction, Missouri Department of Transportation, MOREnet, RoundTrips, superstructure
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Glasgow Bridge construction
Date: Friday, April 3, 2009
Times: 9- 9:50 and 10- 10:50 a.m. CDT
Grade Levels: 5-12
Cost: FREE
Registration: roundtrips@clayton.k12.mo.us
Videoconference Description: The bridge has been designed, public hearings have been held, and funding has been arranged. Now the construction begins in earnest. Join RoundTrips live from the construction site of the new bridge going over the Missouri River at Glasgow, Missouri. Interact with construction personnel as they share how they are bringing the design plans to life. How is the superstructure for the bridge connected to the bridge piers? What kind of materials are used? How is the structure welded together? How are the supports put in place for the road surface to come? What items are pre-fabricated and what is created on site? How does the installation occur? What are the careers involved in building a bridge? For the answers to these and other questions, join RoundTrips for the sixth program in our continuing series of programs produced with the Missouri Department of Transportation as they build a new bridge over the Missouri River at Glasgow, Missouri.
MOREnet and KOMU 8 to Stream U.S. Presidential Inauguration!! Friday, January 16, 2009
Posted by Rebecca Morrison in Classroom Technology, Collaborations, Distance Learning, Links, Web 2.0.Tags: 44th President, Barak Obama, inauguration, KOMU, MOREnet, presidential parade, United States of America
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This just landed in my inbox: on Tuesday, January 20, 2009, through a collaboration with KOMU 8 and KOMU.com, MOREnet will stream live the presidential parade and inauguration of the 44th President of the United States of America, Barack Obama.
Through this technological enhancement, Missourians will be able to be a part of this historical day directly from their desktops.
The inaugural ceremony will begin at 10:30 a.m. To connect directly to the video site for the live stream go to For a 1 Mbps connection; or For a 548 Kbps connection. When several different viewers in an organization view these streams from different computers, these streams can consume a considerable amount of bandwidth. Please consider holding a single viewing to conserve bandwidth.
For more information about video streaming or to learn how to test your computer before the event, visit www.more.net/services/videostreaming/events.html. For questions about connecting, contact MOREnet Video Services at (573) 884-6986.
MOREnet, MODOT and RoundTrips Present: Why This Bridge Here Friday, January 16, 2009
Posted by Rebecca Morrison in Uncategorized.Tags: arch, beam, bending, bridge, bridge construction, cable-stayed, compression, Glasgow Missouri, Missouri Department of Transportation, Missouri River, MOREnet, RoundTrips, shear, suspension, tension, torsion, videoconfernce
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Glasgow Bridge Project (photos from MoDOT's website)
A new RoundTrips videoconference has been announced! Here are the details:
Date: January 30, 2008
Times: 10 to 10:45 a.m. and 11:15 a.m. to Noon
Grade Levels: 4-8
Cost: No Fee
When you travel you notice there are all sorts of different shapes to bridges that span rivers, gorges, and highways. Have you ever wondered “Why did they build that kind of bridge here?” This interactive videoconference is designed to help you and your students answer that question. We’ll explore basic bridge shapes such as arch, beam, suspension, and cable-stayed. We’ll look at the forces of tension, compression, torsion, bending and shear that act on those bridge shapes. We’ll investigate how the purpose of the bridge, its geographic location, and materials used in its construction also help determine its final design. This is the second of our ten part series developed with the Missouri Department of Transportation as it builds a new bridge across the Missouri River at Glasgow, Missouri. Students will see examples of different types of bridges and engage in interactive discussion and activities with engineers who design and build bridges. We’ll look at examples of bridges from around the world and the specifics of the new bridge being built at Glasgow.
To participate in this videoconference, contact RoundTrips at roundtrips@clayton.k12.mo.us.
More details on the series of programs and an archive of the first program in the series can be found at MOREnet’s website, http://www.more.net.
MOREnet to stream Jay Nixon Inauguration Saturday, January 10, 2009
Posted by Rebecca Morrison in Classroom Technology, Distance Learning.Tags: Creative Commons, Department of Elementary and Secondary Education, DESE, Flickr, Governor, Jay Nixon, Missouri, MOREnet
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Missouri State Capital
Through a partnership with the Department of Elementary and Secondary Education (DESE), MOREnet will provide live video streaming of the inauguration of Jay Nixon as Missouri’s 55th Governor on Monday, Jan. 12, 2009. Missourians can be a part of this event, even if they are unable to travel to Jefferson City. Live streaming coverage will begin at noon CST. Interested? To connect to the live stream go to www.more.net/services/videostreaming/events.html.
For questions about connecting, contact MOREnet Video Services at (573) 884-6986.
Glasgow Bridge is falling down… Monday, November 24, 2008
Posted by Rebecca Morrison in Classroom Technology, Collaboration, Distance Learning, Internet safety, Links, Videoconferencing.Tags: bridge, bridge construction, demolition, engineers, explosives, Glasgow Bridge, Glasgow MO, Missouri Department of Transportation, MODOT, MOREnet, RoundTrips, videoconference
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Join RoundTrips live on Monday, December 8 from Rolla, Missouri, and Macon, Missouri. Be part of the action as explosives expert Dr. Paul Worsey (Professor of Mining Engineering, Missouri S&T) and engineers Dennis Brucks and Brian Haeffner from Missouri Department of Transportation walk us through the process of bringing down the Glasgow Bridge (click here to see photos).
This free videoconference is the first of an ongoing series of programs that will occur throughout the 2008-2009 school year. During this series of programs entitled Project MO-Bridge: Connecting Students to Their Future your students will be able to learn what it takes to build a new bridge—from dream to design to construction to operation. Students will interact with experts in a wide variety of fields and learn how specific aspects of their science, social studies, and mathematics curriculum come to life in the construction of a new bridge.
Before that new bridge can be built, the old bridge needed to be removed to make way for construction of a new span connecting route 240 across the Missouri River.
Have your students interact with the engineers who will give us technical aspects of the destruction and rebuilding of the bridge. Ask your questions about what it takes to safely destroy one bridge so you can begin to build another. See video excerpts of the bridge coming down, and explosives demonstrations by Dr. Paul Worsey.
To sign up for this videoconference (target audience is grades 4 through 12), contact RoundTrips by December 2 at roundtrips@clayton.k12.mo.us.
October is National Cyber Security Awareness Month! Thursday, October 9, 2008
Posted by Rebecca Morrison in Conferences, Distance Learning, Internet safety, Links, Videoconferencing.Tags: CBS News, Cyberbullying, identity theft, Internet Safety Night, Mid-Missouri Internet Crimes, Missouri Attorney General's Office, Missouri ICAC Task Force, MOREnet, myspace, National Center for Missing and Exploited Children, online predators
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MOREnet will be hosting their next Internet Safety Night on October 30 from 6:30-8:30 pm CT. The following text explains the event and how to be involved:
Internet Safety Night is a nationwide event that brings information and resources to students, parents and members of the community to help us all stay safer online. We talk about online predators, cyberbullying, identity theft and other Internet-related issues. The goal is for communities to pull together local experts and resources – students, parents, teachers, law enforcement and community members – to begin a discussion about the importance of Internet safety. These local discussions, occurring simultaneously all around the country, then connect to the national host site in Columbia, Missouri for the featured speakers and other resources and tools that families can use to stay safe. Participants at any of the local events can see, hear, ask and answer questions in real time with participants at any of the other sites!
Nationwide Host – MOREnet in Columbia, Missouri
Keynote Speaker Larry Magid is author of MySpace Unraveled, a CBS News Technology analyst and technology columnist. He is also a leading Internet safety advocate and expert as co-director of ConnectSafely.org, founder of SafeKids.com and a board member of the National Center for Missing and Exploited Children.
Take the time and learn how to be safe and secure online
Other Speakers Include:
- Chris Pickering, Chief Investigator, Missouri Attorney General’s Office
- Detective Andy Anderson, Mid-Missouri Internet Crimes
- Lt. Joe Laramie, Missouri ICAC Task Force
- Lindsay Caesmer, Miss Missouri 2007
For more information on this videoconferencing event, including how to participate:
Phone: (573) 884-7200
E-mail: isn@more.net
MOREnet website
RoundTrips + MOREnet Present Internet Safety Monday, September 15, 2008
Posted by Rebecca Morrison in Classroom Technology, Collaborations, Distance Learning, Internet safety, Tech PD, Videoconferencing.Tags: Cyber Bullying, Distance Learning, identity theft, Internet safety, MOREnet, online predators, RoundTrips, videoconference
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Here’s a free v/c opportunity for you and your students on the important topic of Internet Safety. Space is limited, so act now! Here are the details:
Date: Tuesday, October 7, 2008
Times: 10:30 to 11:10 a.m., 11:20 to Noon, 12:10 to 12:50 p.m. CDT
Grade Level: 6-12
Cost: NO CHARGE
There is no doubt we now live in an “Internet Age.” At the click of a mouse, you can e-mail hundreds of people simultaneously, buy that long-desired vintage automobile, or create a personal profile to share with the world. With unlimited opportunities, cyberspace may well have become the new “final frontier.” How best can we explore this frontier? How can we minimize risk and maximize safety? How can we help students be secure in their Internet activities? These are important questions, and we invite you and your students to participate in this important discussion. Students will interact with Chris Pickering, Chief Investigator from the Missouri Attorney General’s office and former Miss Missouri Lindsay Casmaer, a victim of cyber-bullying and cyber-stalking herself. Students will also have the chance to share with each other as well.
Topics will include online predators, cyber-bullying, identity theft and other Internet-related issues. “This is such an important issue – it is absolutely critical for kids, parents and community members to be on the same page with regard to online safety,” said Randy Raw, Manager of Network Security at MOREnet. “The Internet is a fantastic learning tool, but like any tool, people need to understand what the risks are and how to use it safely.”
Interactive videoconference space is limited so contact us early to enroll your students: roundtrips@clayton.k12.mo.us.
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