What you're doing makes no sense - stop it now.
The RJ11 port, on either box, is for the DSL link ONLY, it connects via your filter to your phone line and then onto the DSLAM using PPOA - it has nothing to do with ethernet ok.
You simply need to connect your machines together via IP and configure them to route between each other - if you can't do this then I'd suggest you ask this, modified, question on our sister-site superuser.com which is a much better forum for this type of question. Please read our FAQs before asking questions next time.