Question: I am currently working on connecting ip cameras together .
I am using cat7 sftp cable .

according to the bellow article :

<http://www.differencebetween.net/technology/difference-between-rj45-and-rj48/>

I understand that :

1. RJ45 is used with UTP cable only .
2. I can't use RJ48 because it will not fit into my NVR and SWITCHES .

I have two questions :

1. I found RJ45 which fit cat7 cable .

[https://www.amazon.com/dp/B071GXPTVZ/ref=twister\_B09ZYBKJFZ](https://rads.stackoverflow.com/amzn/click/com/B071GXPTVZ)

How could that happen ? RJ45 should be used with utp cables only ? right ?

2. what's the right connector to choose to connect cat7 sftp to ip camera ?

some people suggest to connect Cat6a Cat7 Keystone at the end of cat7 cable .

[https://www.amazon.com/dp/B074PKQ1S1/](https://rads.stackoverflow.com/amzn/click/com/B074PKQ1S1)

then to use short cat 6 cable to connect between the keystone and ip camera .

is that the correct method ?

Thank you

Answer: 
An IP address targets a host on the network layer. Transport layer ports multiplex an L4 protocol within a host (to different processes/services). Both are different things on different layers.

Basically, if you'd repurpose IPv6 addresses (or bits) for host-level multiplexing you'd gain very little but you'd break logic compatibility between IPv4 and IPv6. A transport layer protocol works the same way on any IP version.
You need something to say "this bit of data coming in from the NIC needs to go to this process."

This is different than "which host/network does this data need to go".

IP addresses are processed by your router and potentially other carrier grade routers to determine where to move your data.

Those devices do not have the ability to, for example, reach into your PC and deposit the network data directly into the process's RAM, so they don't need to care which process on the destination wants it.

This is like adding "Give this to your cat at 2pm" as part of the address of a package you want delivered. The people processing the package don't really need to know that, they just need the address, so it's better if you put those instructions inside the package.