Can I use Ethernet cable from my phone socket?

I currently have a 20m RJ11 to RJ11 ADSL line going from my downstairs ADSL microfilter to my router upstairs. I'm not sure if this is good or bad for speed, but they do make these cables this long. I do feel I'm getting a speed of 1-2 Mb below what my line can handle.

I have read on this site (http://www.adslnation.com/support/extensions.php) that "Standard Category 5 or Category 6 network cable can be used if available" instead of an my RJ11 to RJ11 ADSL line.

But how do I do this? My Ethernet cable doesn't fit into my microfilter. I have heard other people doing similar things. But I don't want to put my router downstairs either.

How do you do this? Or do you have any recommendations for running a cable from a single downstairs phone socket to my upstairs router without moving the router downstairs.

if you use a faceplate filter the ADSL socket is an RJ45 socket, into which RJ11 also fits. You could use one of them with an RJ45 cable then a female/femal coupler on the end to plug in a short RJ11-RJ11 lead.

Alternatively you could connect the Cat5 cable to the back of the master socket and put an RJ11 socket on the other end. www.clarity.it shows some of the options.

I would start by taking the router downstairs for a short period to assess the potential gain.

The RJ45 connectors on the end of your Ethernet cable will not fix an RJ11 socket.

You can use the cable if you replace the connectors on BOTH ends. An easier option is http://www.adslnation.com/phpapps/catalog/product_info.php?cPath=21&products_id=109

You could make one up or get one made for you. If you get a filtered faceplate you can plug in an RJ45 or RJ11 connector into the the ADSL socket

Even if using a faceplate you will find problems plugging the other end of the RJ45 Ethernet cable into the ADSL modems ADSL socket (normally an RJ11 socket)

Also for people not used to making up cables with RJ connectors doing it as a one off i.e. tools cost mean buying a ready made cable is often better value

In reply to:

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RJ45 Ethernet cable into the ADSL modems ADSL socket (normally an RJ11 socket)

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an RJ45 coupler on the end (female both sides) effectively provides an RJ11 socket.

Before spending money on anything, i'd verify if you are indeed losing speed by moving the router downstairs and trying it in the test socket (behind the master socket faceplate). Its not worth changing the cable unless you are sure there's speed to be gained.