Solution
I know that dsl uses all four wires. So if you only used two it's not going to work. See if this link helps you.

May 21, 2019
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I know that dsl uses all four wires. So if you only used two it's not going to work. See if this link helps you.

do you know witch letter for witch color (the colors are: red,white,blue,yellow)
 

Ralston18

Titan
Moderator
More information needed:

The wire colors that I see are not standard for US. If you live elsewhere then you need to know what colors are being used and paired.

Are you able to add a few more photographs and more information about the hardware being used?

There should also be a splitter (filter) that takes the incoming line and splits the service between DSL (to modem) and telephones.

Google words such as "DSL installation" and look for some online tutorials.

For example:

https://www.lmi.net/support/common/dsl-support/how-dsl-works/

https://www.wcvt.com/kb/article/dsl-filter-installation-guide/

Sketch out your wiring and devices. Include device make and model information whenever possible.

Post accordingly.