On April 9, 2012 at 18:07, fcwilt said...
I think it depends in part on the brand of jack and plug.
I was in the habit of using RJ45 jacks for everything but I was finding the the RJ11 plugs didn't always seat well. There were also cases of the little gold wires in the jack being damaged - not the wires the RJ11 was actually connecting to but the outer wires being pushed on by the plastic part of the RJ11 plug.
So I would suggest continue to use the RJ45 jacks but either put RJ45 plugs on the phone gear (what I do) or make up little adapters.
I had the same experience.^^^
I just make custom pig tails at the room end that go from the phone to the RJ45 keystone jack. I take one of the RJ45 patch cables i have, cut an end off and put on an RJ11 connector. RJ45 plugs into the wall plate RJ11 plugs into the phone.