Monday, November 15, 2021

Need help with the Design of a University Classroom

Hey guys,

a friend of mine asked me to help him and his professor with the design of the network infrastrucsture in their new classroom. I recently finished my CCNA so my knowledge isn't very deep especially when it comes to networking hardware so please don't go too hard on me ;)

The task is the following:

-1 autotracking camera focused on the presenter

-1 camera that works with a microphone to identify different zones in the room and to focus on those zones

-1 microphone on the ceiling of the room able identify the beforementioned zones

-1 TV

-1 SmartBoard

-1 Computer/Control desk

-1 Tablet to connect and control the computer

The idea is that other students who can't attend the class and are studying from home can still see both the presenter/teacher and the people speaking in the classroom. The camera together with the ceiling microphone will communicate and focus on the speaking student in the classroom (the microphone tells the camera in what kind of "zone" the talking student is, after that the camera focuses on that zone). At the same time the other camera is constantly tracking the talking and presenting teacher in the front of the classroom.

From my understanding right now the microphone and the cameras will be connected through USB cables to the computer and will communicate through some software on the computer. Since I'm not very familiar with transmitting multimedia over the LAN my question would be if I can CONTROL the cameras and microphone over USB but getting the video output over the LAN and import it into something like OBS (the specifications say that the camera supports IP streaming like RTSP and RTMP and do I need a speacial Switch/Router that support those protocols)?

The next problem is the network where all this devices should be. Since transmitting livestreaming information(tablet connecting to pc, cameras, microphones connecting to pc etc) over the university-network is rather problematic (needing to reconnect, connecting the camera can also be problematic since the admin has to add them etc. etc.) I was thinking of creating a private network for the classroom. The professor says last time he tried to do something simillar and far simpler in some other classroom and talked to the IT staff of the uni it took them months until they did something and even that was wrong so he doesn't want to rely on them again... Right now there are around 6 LAN ports in the room that each have a static public IP address. Basically I thought about connecting a router to one or two of the ports and impelementing NAT for all the devices that will be connected to the router (see above).

The are a few requirements:

-At least 8 ports (10 would be better)

-There should be at least 3 PoE+ ports for the microphone and the cameras

-Wireless Access Point (needed to connect the Tablet to the Computer and eventually to connect the devices of the students to the computer)

I didn't find a device like that online. Best I found were these 2 routers:

The RV260P VPN with PoE Router which has no WiFi and only PoE which from my understanding isn't enough since the devices need PoE+.

And the RV260W VPN with Wireless Router which has no PoE at all.

Since I didn't find anything better I thought of getting the RV260W and a simple Layer 2 Switch that has PoE+. Then connect the Router to the wall LAN port, the Switch to the Router and all the devices to the Switch (Or the Access Point of the Router). I also thought about getting a Router and putting PoE+ and a wirelless modules inside but didn't find anything appropriate either.

I really hope someone could give a recommendation for a Router, Interface Cards + Router or Switch + Router. And probably show me some of the red flags I missed in this setup.

Thank you very much in advance

PS.: The Professor said that ordering and receiving those items would take up to 3 months (German burecruacy) and he wants to get all the needed hardware as soon as possible. Meaning reordering is not really an option.

PPS.: On the Cisco website it only says that this router (RV260W) only supports 802.11ac however on this website (just scroll down) it says that this router supports many different wireless standards. Does Cisco just omit mentioning all the other standards?

PPPS.: The price doesn't really matter. The prof would rather pay $1200 than waiting another 3 months for the additional hardware. He just wants a solution that works and doesn't involve the Uni-staff.

Edit1:

I’m sorry I forgot to mention it but I already found some mics and cameras that do exactly that (can communicating with mic etc). There are those shure mics that you attach to the ceiling. And this Aber Camera that can focus on those zones. The other camera looking on the presenter uses “basic” ai auto tracking.

What do you think about the Router/Switch networking problem?



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