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PodSnacks: Wavelength Division Multiplexing

Posted Wednesday, May 07, 2008 6:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q2/wdm.mp3
We wrap up our multiplexing series with a quick look at wavelength division multiplexing (WDM). In today's episode, Michel and Mark noodle on the concept a bit. Over the next few days we will begin a series of PodSnacks based on requests from listeners. Read More...

PodSnacks: Content-Addressable Storage (CAS)

Posted Tuesday, May 06, 2008 6:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2008q2/cas.mp3
Today we take a quick look at a storage technology known as content-addressable storage . I'd tell you more, but I have to run. So I'll leave you to give it a listen. As always, you can listen to (or download) the PodSnack by clicking here , or Read More...

PodSnacks: Transmultiplexing (Transmuxing)

Posted Monday, May 05, 2008 6:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q2/transmuxing.mp3
Continuing with our multiplexing theme, today Trevor talks to you a bit about transmuxing . You can listen to (or download) the PodSnack by clicking here , or you can use the Flash player below. If you have an idea or request for a PodSnack topic, send Read More...

PodSnacks: Orthogonal Frequency Division Multiplexing

Posted Friday, May 02, 2008 6:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q2/ofdm.mp3
Our multiplexing theme continues. Recently, we talked about a multiplexing scheme found in wireless systems, called code division multiple access (CDMA). Today, Paul explains another multiplexing approach that is found in both wireless and wireline systems: Read More...

PodSnacks: Link State Database (LSDB)

Posted Tuesday, April 29, 2008 6:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2008q2/lsdb.mp3
Enough of the basics! For today, we're going to give the more technically oriented members of our audience a little something to chew on. Our topic today comes from the world of routing , specifically, OSPF . We're going to talk about a construct Read More...

PodSnack: Multiplexing

Posted Monday, April 28, 2008 6:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q2/multiplexing.mp3
Let's go back to basics, at least at first. In today's PodSnack we're going to talk about multiplexing in general and in it's most basic forms. Then, in the coming days, we're going to explore other multiplexing-related issues. You Read More...

PodSnacks: IP Multimedia Subsystem

Posted Friday, April 25, 2008 6:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q2/ims.mp3
We've had a few podcasts on IP Multimedia Subsystem (IMS), but Paul and I thought a brief podsnack to give a high-level definition might be a good idea. Then, if you are curious, you can go listen to some of the other podcasts we've done on this Read More...

PodSnacks: The Chained Layers

Posted Thursday, April 24, 2008 6:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2008q2/chained_layers.mp3
Back to the OSI Reference Model for a moment. You may sometimes hear reference to the chained_layers . This is a reference to the first three layers of the model, so named because chaining them together creates the fabric of an inter-network. In today's Read More...

PodSnacks: Firewalls

Posted Wednesday, April 23, 2008 6:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q2/firewall.mp3
If you are connected to the Internet (and if you aren't, how on earth are you reading this blog?), then you might be in trouble. The Internet is a packet network that works on the datagram model: each packet is routed independently and all of the Read More...

PodSnacks: Enveloping

Posted Tuesday, April 22, 2008 6:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2008q2/enveloping.mp3
Today we again talk about a fairly generic concept: enveloping . The concept is pretty easy: we envelope something when we enclose it, or place it inside something else. That's essentially how many protocols inter-relate in a layered protocol suite, Read More...

PodSnacks: Virtual Circuit (VC)

Posted Friday, April 18, 2008 6:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q1/virtual_circuit.mp3
Packet networks come in two basic flavors: datagram or virtual circuit . Today, Mark is going to walk you through the definition of a virtual circuit, and examples of places where you can find them. You can listen to (or download) the PodSnack by clicking Read More...

PodSnacks: Back Office Application

Posted Thursday, April 17, 2008 6:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2008q2/boa.mp3
Today we talk about a fairly generic concept: the back office application . The idea is fairly trivial: it's the software that is implementing the business logic to support a user interface, and it is typically running on high-end systems in the data Read More...

PodSnacks: Analog

Posted Wednesday, April 16, 2008 6:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q1/analog.mp3
Back to basics! Paul and I recorded this PodSnack about the word " analog ." It's a term that surfaces all of the time. The word itself is fairly innocuous. In telecommunications, it refers to a communications system that uses a continuously Read More...

PodSnacks: Peer-to-peer vs. Client/server

Posted Tuesday, April 15, 2008 6:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2008q2/p2p.mp3
Over the past several weeks, there has been a lot of talk about Comcast, and other ISPs , that were attempting to get bandwidth under control by throttling users or explicitly interfering with peer-to-peer (P2P) file sharing. I thought this might be a Read More...

PodSnacks: Asymmetric Digital Subscriber Line

Posted Monday, April 14, 2008 6:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q1/adsl.mp3
Since we've been talking a bit about DSL technologies, it seems a good time to focus in on one specific form of DSL: the one most commonly found. So today, Mark is going to give you a primer on Asymmetric Digital Subscriber Line (ADSL). You can listen Read More...
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