31 hours 29 minutes

Video Description

Channel Service Unit and Digital Server Units This lesson covers the channel service unit/ digital service units. These units sit on the edge of the network near the demark point. The channel service unit/ digital service unit manages errors, establishes timing and prevents echoes.

Video Transcription

So our last device that we're gonna talk about for this particular particular module is going to be our CSU slash D s. You now R C s U. D s U is a device which stands for our channel service unit and slash our digital service unit. Now, what R. C s U D s u does is it essentially sits on the edge of our network near our
right next to our Demark point,
if not at our Demark point, that is going to essentially provide a connection from our end to the C s u D s u on the Internet service providers in established a connection managed connection errors, established timing and help prevent echoes
from our side of the network propagating onto the
propagating onto the Internet. Service providers line to the to the other side. So
essentially what R. C s U. D. S U is going to do is it's gonna clean up the signal that goes from our internal network to the outside, and it's gonna make sure that they're manages any connection errors that may be going on. And it also helps to do things like establishing timing between our side and the other side. There has to be some sort of device
at this Demark point,
that man that helps manage that connection. Because if not, then we can't just have a cable that just runs from our Internet service fighter straight to us that we just plug into a standard switch.
Ah, lot of our dialling ups are dial up connections have modems. Some of our five or connections have tohave fiber terminals that they plug into on our side on some of our networks have the C S u D s U, which helps to maintain and clean up that connection between us and our digital service provider. There on there's a C S u D s u.
If there's one on our end
of the network, that means that somewhere on the Internet service providers side at their branch office, they also have a corresponding C S u D s U, which does the same thing when they're sending a signal back to us,
it's going to help. Clean of that connection is gonna help manage connection errors, established timing
and prevent echoing from going on between our two networks and from our inside network to our outside network
eso again, Much like our smart Jack, we need to be aware of where this device is on our network. We need to be aware of who we can call for service if this device goes down because this device is a perimeter device which if it goes down, we're not gonna have a connection from our Internet service provider into our network.
So thank you for joining us here today on cyber today we talked about several different concepts dealing with different wiring and cable connections into our environment. We talked about some of the main infrastructure devices that connect us to our Internet service provider and connect our workstations to our main backbone.
We talked about our M. D F's and I d efs, our main distribution frames and our intimate immediate distribution frames
which helped Thio connect and segment out our network in our network backbone. We also mentioned are different devices on our perimeter such as R. C s U. D s. You in our smart jack which are located at our Demark or from our Demark extension on our d mark. Of course, being the place where the Internet service provider
comes into our building and hands over ownership of the network.
So a short module, but hopefully it was informative. And hopefully it helps you to better understand how the different network concepts and of the different terminologies as far as what different parts of our network are called and how we segment our network up to provide service to our to our different users.
Hopefully, it'll be helpful when you're designing your own network
or if you are going forward and studying for the network plus test to be able to identify. The different terminology is presented there.
So we hope to see you here next time, and we hope to be ableto learn some more with you on cyber harry dot i t.

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Instructed By

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Anthony Harris
Senior Systems Engineer at ZenPoint Solutions