DAHUA HDA-IRD2M42VF-W-S, 2MP, 2.8~12mm Vari-Focal Lens, Coax BNC Connection 4-in-1(HD-TVI/AHD/HD-CVI / 960H Signal) HD IR Dome Camera,IP66 Outdoor

[Music] hi Keith mm romantic consulting I'm just making up some test cables here for some old-school copper circuits basically this is a BNC BNC coax used for a ds3 or technically this this cable is a t3 terrestrial carrier 3 and then it has a signal that goes on it which is a ds3 it's kind of the old-school North American digital hierarchy we're talking about not used too much but still out there in some areas so the ds3 has 28 ds1 zhan it each ds1 carrying 24 voice grade channels 64 kilobit which gives us 672 phone lines basically on one circuit so in order to test this we need some test courts and just thought I'd make some up here so this is a yeah there's a BNC basically we get our cable and it's just a coil of this small coax cable and this is what's called a trumpet ear this is a automated electric coax stripper and inside here if we take this apart there are basically these litt