Quick question on ADSL filter setup

[sharingan_sasuk]

Hi all, I was wondering if someone offer me some advice on the best way to setup my broadband and telephone connection here.

Currently I have a simple basic one telephone & ADSL broadband router connected to my main socket, although the router is upstairs in my room via an extension cable:

However, I want to add a second telephone in my room upstairs, and I'm not sure which of these two options would be best? I would prefer option 2 as it would only require one extension cable up to my room instead of two, but I'm not sure if one filter is enough, and if I need a second one at the mains socket too?

Option 1:

Option 2:

Reason I have the router upstairs is because I like to keep an eye on it as I do suffer the occasional dropped connection and there is no easily accessible power socket near the phone socket downstairs. Many thanks for reading!

ps. I know which cables to use but I couldn't be bothered to label them in the diagrams as it's not the type of cable but rather the setup I'm seeking advice for

 

[sharingan_sasuk]

Out of them only option 1 will actually work.

I see. Is that because I would need a 2nd filter in there so the downstairs phone works, or ADSL filters must always be plugged directly into the main socket?

 

[sharingan_sasuk]

Ok thanks for clearing that up. I'll try and see if I can find a spare ADSL filter somewhere, and give option 2 a try.

One final question, with option 2 do I stick the second ADSL filter between the main socket and splitter, or between the splitter and downstairs phone?