Max Performance & Speed of Twisted Pair Cable: Identifying Crossover vs Straight & Usage Scenarios

Satellite just doesn't work if you don't have a second link to send .... you can possibly have a satellite transmitter but that's completely different costs.

ALWAYS HAVE TO BE DIFFERENT SIDES ... you like it or not, but you won't change the physics: p

Herbatniczek wrote:

Satellite just doesn't work if you don't have a second link to send .... you can possibly have a satellite transmitter but that's completely different costs.

ALWAYS HAVE TO BE DIFFERENT SIDES ... you like it or not, but you won't change the physics: p

It used to be like that, modern satellite Internet systems are capable of transmitting signals to satellites. That is why they usually use their own antenna and a special converter adapted for this purpose.

While this solution is indeed still in use, the costs. :D

No less that there is an internet connection the transmission must absolutely be bidirectional. How do you envision one-way communication? You can receive the data, but how, when you can't send any, tell the server that it has to send anything at all? To load a page, first you send a request to DNS, then you receive the IP of the web server, you send a query to it, it responds with the downloaded data. Not to mention the numerous data sent at the level of the TCP protocol (establishing a connection, acknowledgment of packet receipt, etc.). I will not lecture on communicators that somehow send a message, e-mail and other, absurdly obvious examples.

Well, gentlemen, how does VoD work on SAT TV because it is 1-way reception, how does the supplier know what movie I have chosen and will someone explain it to me? Because the SAT TV works in one direction, right? Or searching for SAT channels, how does the satellite know I'm going to scan the channels and send them to me?

And such sat sending if there is no satellite, how does it work, if there is sending on the cable, why satellite reception at all? And I do not understand how this satellite would send these packets, it only sends to the subscriber's place? How does he know where he lives etc?

The satellite sends all the channels and sends it all over the globe. Your set-top box simply tells you the one you have chosen, but broadcasts (same as on terrestrial TV) are all the time.

Well, but how does VOD work? Well, the converter does not send anything from the subscriber?

I read somewhere that how many people watch illegally encrypted channels, people paying aBO have lags and image stuttering, but what does this have to do with the fact that subscribers do not charge anything, because they only receive whether it is legal or not.

And the SAT internet also goes with HB? How so does the satellite send packets to a specific place especially for each subscriber?

okular766 wrote:

Well, how does VOD work? And the converter does not send anything from the subscriber?

Satellite has nothing to do with VoD. Everything happens over the Internet, the ordered program is saved in the decoder flash and you play it from there.
Satellite spreads everything to everyone. From selecting the right things, there are various authorizations on a specific subscriber's equipment.

Impossible because a friend has VOD and he has no access to the net.

okular766 wrote:

Impossible because a friend has VOD and he has no access to the net.

There is no VoD on the satellite - strictly speaking. This service is PPV, mistakenly known as VoD. The return "channel" is the telephone, SMS or the Internet - this is how the program is ordered and "unlocked" for a specific subscriber (card) is available 24 hours a day on a separate channel.

Well, but how does he get into the apartment?

same as other channels

But what about the movie? and how does he know when the subscription wants to watch it
Because you wrote that the video with VOD flies through the net
but a friend does not have a net at home and somehow he has VOD via satellite

see yourself Link

Maybe it's PushVideo or some other concept.

e.g. n once (I do not know how after the merger with c +) had a system in which films were loaded on the HDD in the decoder - there is a transponder carousel where you simply transfer movies as files - the decoder collects packages and builds a base but to use you need to have a subscription and / or the so-called return path - without a return patch, you have scratch cards or text messages - you get a one-time code for which you pay.

Herbatniczek wrote:

It may be PushVideo ...

that was exactly what she was using now nc +

Besides, there are also two-way satellite connections (VSAT) - radio transmission to and from the satellite - usually expensive and requiring additional equipment - it works similar to satellite telephony.

smario11 wrote:

The speed of a 5e 4-pair cable is 1gbit.
Whether or not there will be a cross, it is not very important, unless you have 10 years old equipment, then it does matter. Currently, every device has an auto mdi / x

With this cross, I would read a bit ... Cross is different and Split is different ... Cross was once needed to connect two computers directly Ether-Ether
Split, on the other hand, breaks 2 pairs in the 8-pair cable and releases them to other pairs ... why?
and so that the connection has better parameters ... because these pairs are followed by the greatest disturbances
The effect is that on a cable without split you will not let the communication go above approximately 100m (different devices work differently, therefore approximately) ... but when you do a split, you can release the twisted pair for longer distances