The instructions to connect my phone to the fixed network include two options:
If your Horizon HD Recorder combines all three services - TV, Internet and telephony - you have two possibilities for connecting your telephone:
Option 1: If your telephone cable ends with a small, transparent RJ11 jack, you can plug this directly into the TEL 1 socket on your Horizon HD Recorder. If your subscription includes an additional connection, please plug the second telephone set into the TEL 2 socket.
Option 2: If your telephone set is fitted with a “TT83” block connector, first connect this to the adapter provided. You can now plug the small RJ11 jack into the TEL 1 / TEL 2 socket.
The problem is, there is no Option 3 for my phone cable, which ends with a RJ45 jack. How to connect this to the TEL 1 socket on the Connect Box?