ᐅ Buy the correct electrical boxes

Hello,

according to the construction scope description, empty boxes (only cables) have been installed.

The manufacturer is Merten.

A question for a layperson: I want to buy the appropriate connection sockets.

A telephone and DSL modem are to be connected.

What is the difference;

Telecommunication Connection Socket TAE triple, 2x6/6 NF/F, white
Telecommunication Connection Socket TAE triple, 2x6/6 NF/F, white
Technical data: 2x6/6 NF/F: 2 telephones, 1 additional device; 3x6 NFN: 1

Or;

Telecommunication Connection Socket TAE Triple, 3x6 NFN, white
Telecommunication Connection Socket TAE Triple, 3x6 NFN, white
Technical Data: 2x6 / 6 NF / F: 2 telephones, 1 additional device; 3x6 NFN: 1

Or do I really no longer need a splitter here??

Combination socket UAE/TAE (Cat 3), 8(6)-6F+N, white
Combination socket UAE/TAE (Cat 3), 8(6)-6F+N, white

Thanks.....

Well, it depends on what you need.

2x6/6 NF/F: 2 telephones, 1 additional device
3x6 NFN: 1 telephone, 2 additional devices

If it's just your main line and you want to connect your router/splitter, it doesn’t matter which one you choose. (both connect to the same, or the F, socket)

I would only use the latter if you know what you’re doing and can make the appropriate cables yourself if needed.

Thanks a lot!