The below would connect to the carriers network. These would also carry said carrier based traffic between them. Does that make my home electrical wiring fall under the data cabling regulations, and my electrical contractor needs to be data licensed? (ignoring electrician regulations for a sec) On the alarm system side - if it has a dialler - all the alarm cabling (which is nothing special) needs to be installed by a licensed cabler. However this cabling will never connect to the carriers network (directly) nor will it carry traffic intended for a carrier network. - This is no different to the above - but the licensing requirements are reversed. One needs it, one doesnt. Again - on the coaxial side - now that digital TV requires Quad Shield coax, and is terminated with F-Connectors - exactly the same as HFC - does that mean that all Mr-Antenna tradesmen need to be data cabler licensed? The point is that there's no hard delineation between what is in and what is out of scope, and there are contradictory requirements.