FTTC / Broadband / SoGEA
If you've moved to Zen from a previous provider, carefully disconnect any equipment from your old ISP to make way for your new Zen FRITZ!Box.
You get the best connection from your main phone socket (aka the master socket). It's usually located where the line enters the home.
Before connecting to the main socket, check if it has one, or two inputs on the front of it;
The FRITZ!Box's DSL cable will have two differently sized ends.
Plug the larger of the two into the grey DSL port on the back of the router.
Next, connect the other end of the DSL cable to your microfilter or socket's DSL port.
Mains power connectors may come with a UK style head you have to clip onto them. Once done, connect this to a mains power socket.
Connect the remaining power cable to the back of your router.
Your router will need about 5-10 minutes to set itself up. It shouldn't need any help so go and make yourself a cup of tea whilst you wait.
When you come back, the Power/DSL light should be solid on the FRITZ!Box, meaning your router is ready to use!