WiFi vs Internet

Sadly, we often hear the following two statements:

It can’t be the router settings because my Wi-Fi is working.

and

Here’s a photo of my working Wi-Fi connection, so my internet must be broken.

The root of the issue seems to be that people don’t understand the difference between Wi-Fi and internet access.

Here are three examples that could explain the difference to you.

Imagine your home is like a big library (which represents the internet). The librarian (your router) helps you find and borrow books (data). You and your family members can chat with the librarian using walkie-talkies (this is your Wi-Fi connection).

Now, even if the librarian’s walkie-talkie is working fine and you can talk to them (you have a Wi-Fi connection), the library might be closed or inaccessible (internet connection is down).

So, having a working walkie-talkie (Wi-Fi) doesn’t necessarily mean the library (internet) is open. The two are related, but different!

or

Imagine your Wi-Fi router is like a post office in your home. All your devices (like phones, laptops, and TVs) send and receive messages through this post office. Now, just because the post office is open (meaning your devices are connected to the router), it doesn’t necessarily mean it can send or receive mail to and from the outside world.

The Internet connection is like the trucks that come and go from the post office to other places. If there are no trucks coming in or going out (meaning no Internet connection), then your post office can’t actually send or receive any mail beyond your home. Your devices can still “talk” to each other within the home, like sending files or printing, but they can’t access anything from the wider world like websites or online games.

or

Having a Wi-Fi connection to a router is like being connected to the switchboard inside your house. You can talk to other devices in your home, like your smartphone talking to a smart TV. But that doesn’t mean the switchboard is connected to the outside world.

The router has another job: it needs to connect to the internet, which is like connecting your home switchboard to the big phone network outside. If that connection is missing or not working, you won’t be able to browse the web, watch online videos, or do anything else that needs the internet, even if you’re still connected to the router via Wi-Fi.

So, Wi-Fi connection to the router is just the first step. The router itself also needs to be connected to the internet for you to do most of the things you want to do online.

New in the dorm?!

Welcome to the dorm! It’s great you’re here.

If you’re wondering about the internet, don’t worry, it’s really easy! In your room, you’ll find a wall socket that gives you direct internet access. Prefer WiFi? No problem! You can easily set up your own WiFi router.

If you don’t have a router yet, you can get one for around 35 euros. We even have a list of routers that work well here. However, we don’t recommend any specific brand or model. Just a quick tip: FritzBoxes are not the best choice, and there’s really no need to spend more than 50 euros on a router.

If you ever run into a problem or need help, don’t hesitate to write to us using the contact form. Please always use this form so we get all the info we need to help you quickly and efficiently.

Have fun and enjoy your time in the dorm!

Your volunteers of the Netz-AK (short for Netzwerk Arbeitskreis = Network Work-group)

Speed test

We have set up an internal test for you some time ago. At netz-ak.de/intern-speedtest, you can see how much your connection in your dorm room can handle.
We hope that all devices connected to our network via cable have a ping of less than 5 and an insignificant jitter.

A high jitter of over 5 indicates that the device from which you are measuring is connected via Wi-Fi and may be affected by what we call the 2.4 GHz problem.

Both download and upload should be just below the respective maximum of your building, i.e. 100 MBit/s or 1 GBit/s (1000 MBit/s). You can find out how fast the connections in your dormitory are under the expandable map on the  facts and figures page.

Currently, none of the dormitories are reaching the limit of their connection.

Why I wouldn’t buy a FritzBox for my dorm room

A FritzBox has a bundle of functions that are helpful for a family home or an office.

You don’t need the following functions:

  • VDSL modem
  • landline telephones, faxes, fancy door bells
  • mesh, repeater and power line functions

For all of that you are paying when you are buying a FritzBox.
That’s why they are more expensive that simple Wi-Fi router and do not improve your internet speed.

A simple router with 5 GHz Wifi costs about 35€, which is half the price of a used FritzBox 4040.

Setting up a simple Wi-Fi router is easier than setting up a FritzBox with all the functions you can and will not use in our dorm.

Dropouts in 2.4 GHz Wi-Fi

The reason why we do not recommend routers that do not create a 5 GHz Wi-Fi is very simple.
There are twelve channels in the 2.4 GHz frequency range, which means that theoretically a maximum of twelve such Wi-Fis can co-exist. In practice, a maximum of four 2.4 GHz Wi-Fis will work side by side without interfering with each other excessively.
2.4 GHz penetrates walls very well, but can transfer data less fast.
For dorm rooms a 2.4 GHz Wi-Fi is therefore very likely to suffer from interference and dropouts if you have more than four neighbors within a distance of 30 meters around you (even above and below you!).
A bad Wi-Fi okay for WhatsApp and surfing, but not for videoconferences.

WiFi died March 2021?

Some of you did build their own WiFi in a way that blocked the internet access of others in our house. Using access points or repeaters to create a WiFi is not allowed in our network, because it keeps others from getting online.

Only routers are allowed to build your own WiFi, as we stated in our manual. We stared enforcing this rule in all our dormitories because it`s necessary.

To get you back online as quick as possible, please look up your device in our manual. Is it marked “ja”, you can just configure it in router mode and you are online again. If you are not successful, you can contact us using the contact form and the subject “Creating a WiFi”.

If your WiFi device is marked “nein” and you contact us, we will try to find a solution for the time you need to replace the device.

Contact and announcements

NetzAK_Aushang_Stand_WS2020 should be displayed in the entrance of your house.

The Netz-AK is announcing all its changes to the dormitory network on its website.

For us it`s important to have latest version of the notice in our dormitory, so you can reach us directly with no delay.

If the notice is missing, you could just print it yourself and pin it in the entrance to you house or you contact your dormitory administrator and ask them to do it.

We are aware of the problem that some old versions of our notice are not getting replaced. You must report the problem to your administrator at the Studierendenwerk to hopefully improve the situation.

If you contact us using the contact form, most problems can be fixed in a few hours as long as you are in the dormitory and respond to our emails.

Because we are volunteers, we are never off duty and we respond quickly.

As volunteers we are using our private phones, that`s why we call from blocked/ private/ anonymous numbers, so please just answer these calls after reporting an issue.