so when we're talking about are different network components and we're talking about are different places on our network. One of the components we need to be aware of this something that could be called us are smart. Jack now are smart. Jack is an Internet service provider device at our point of demarcation. That is especially comment in our
t one t three e one, e three and r p r i networks
or our networks that you can use P R I. And they're what they're doing is they're transferring our protocol there, translating our protocol from whatever protocol our Internet service provider may be using to get from Point A to point B to get from the Internet service provider branch office to our office
to an internally rideable protocol that our internal network can use.
Our our Internet service provider may be using something like,
ah, frame relay. Or they may be using our asynchronous transfer mode. Or they may be using P. R. I and may need be using multiple different data channels with control channels, and our devices may not be able to read that and understand how our Internet service providers transmitting that information as such,
we need to have a device that they connect into that translates that
and then connection to our internal devices so that we can understand that. And this is typically called a smart Jack. So
we have our MDF, our main distribution point. We have our main distribution frame.
We have our I. D. S,
our intermediate distribution frames. We have our work stations. We have our Demark extension
and then over past our Demark extension at our MDF, maybe where they put where our Internet service provider connects in our smart Jack s o. A lot of times, if you're having issues that are
enterprise wide, if our entire building is down and we go to our MDF, we may want it One of the components that we may want to check. Maybe the smart Jack that connects into our network. Because if that if that device is having issues and it's not able to translate network connectivity, then no one inside our network will be able to get out to the Internet. Not
not a single person, because everyone has to go through that device in order to get out.
S o be aware of that device. Be aware of how important it is in your network and be aware of. If you're coming into a new network where you need to administer in trouble, shoot the network. Know very early on where that is and who you can contact for support. If that device goes down
and the next we have our concept of vertical cabling versus our horizontal cross connects. Now, when we're talking about our vertical cabling versus our horizontal cross connects, we're talking about the difference between our backbone cabling and the cabling that connects our I. D s to our work stations On our wall drops in our switches and hugs.
So are vertical cabling is backbone. Well, why do we call it Verdell ing vertical cabling? Well, if we imagine our cabling so that all of our IVF sehr on different floors than that backbone cabling is going vertically up and down. But we refer to our vertical cabling as our backbone cable line. You hear someone calls
referred to there being a problem on our vertical cabling. They are probably referring to a problem on our
main backbone line through our infrastructure. So we have our vertical cabling going up and down connecting our I d efs to each other and connecting our i d efs to our India are intermediate distribution frames to our main distribution frame.
And then we have our horizontal cross connects again back with our example of having a multi storey building.
The cabling that goes across horizontal on our floors is going to be the cabling that connects our our intermediate distribution frames to devices such as our hubs and switches are patch panels are workstation drops. It's going
to be the cabling that I's gonna be our intermediate cabling, which connects which connects our i D efs to our work stations. So that's our horizontal cross connects. So when we're talking, so just remember that if you say you see a question that says which types, uh, what type of cabling
in our environment would be our bi, our backbone cabling? Or which of the following
maybe a term referring to our backbone cabling in our environment in a office network. And then we have our horizontal cross connect our vertical cabling,
our IVF and R, and then we have a patch panel. Well, we may well want to go with our vertical cabling because that vertical cabling is gonna be what is going to be our backbone. And a horizontal cross connect is going to be what connects our our intermediate level is gonna be what connects our I. D s,
our workstations to that backbone.