I am upgrading our network at church adding 3 Unify access points, a 16 outlet POE switch, Cloud key and firewall, all Ubiquity equipment. Got it all done and working except for 2 pesky 100' long Ethernet runs. Using CAT6 non-shielded riser grade 23 gauge cable https://smile.amazon.com/gp/product/...?ie=UTF8&psc=1 and EZ-RJ45 CAT6 connectors. Using a 4 pair Ethernet cable continuity tester, the cable tests good, but won't connect to the equipment. I had a buddy come in that has installed miles of cable. Using his continuity tester he sees two wires that show open, even after re-terminating. Why different results with two testers? Cable was run above a drop in ceiling, no hangups while pulling, all went in nice and smooth. I pulled out one cable that wouldn't connect after testing good with my tester and re-terminating twice. Checked continuity with an ohmmeter, all 8 wires showing essentially zero resistance. All he could suggest was to install punch-down CAT6 connectors on the cable ends and use a jumper to the switch. So I have RJ45 keystone jacks and a punch down tool on order. Keeping my fingers crossed.