Wiring – How to properly link 2 phone cables with different diameter

phone-wiringtelephone

I'm thinking about how to link 2 cables .

I have the phone line from my provider that comes in with a cable made of 2 internal strands, each of this strands is 0.75mm on average along all the length of the wire ( just the copper section, of course each strand has white or red insulation ) . The cable has open heads .

I would like to rewire my phone and data lines inside my house and use ethernet / rj45 / FTP cabling for everything .

The main problem is that the phone cable from the provider is basically 21-20 AWG, the internal strands of an FTP cable are way smaller in diameter, basically half of that: how I can link the 2 ?

The first thought was about LSA cabling, but 0.7-0.8mm are too much for most LSA systems, I haven't tried yet in practice, but basically all the most reputable brands produce networking plugs and junction box around the 26-22 AWG mark .

A patch panel is the same thing since all the patch panels I know of are based on LSA style type of internal wiring .

On this line I have both data and voice and I would like to use something made of copper, with a really good insulation / shielding , possibly with IP67/IP68 protection .

tl;dr

the provider's cable is 2x thicker than a single strand of your typical FTP cable and I want to do a good job with it

PS

I don't want to fiddle with the provider's cable, I just want to plug it in somewhere and forget about it, so I can't just crimp an rj11 plug on it .

Best Answer

Typically the line from your provider is, or should be, terminated in a "customer interface" or "network interface device" which also usually have surge-suppression for the telephone line built-in - and those have large threaded studs or other screw connectors for the larger wires to connect to.

network interface device image from polpo.org

Network interface image from cromwell-intl.com

I frankly find it odd that this would be missing, as it's remarkably standardized across many countries; and the surge-supression is not something you should be without, since telephone lines can pick up all sorts of unpleasant things in thunderstorms.