Is there any electricity in the communication cable?
There is power and low voltage in the communication cable (-48V). There is no electricity in the ordinary fiber optic cable, but there is electricity (48v/220v) in the cable that provides the power supply.
Ordinary cable, there is electricity, but the voltage is relatively low, in general, do not feel it. There is no electricity in the fiber optic cable, which transmits data through light.
How many telephones were there to the copper wire?Today's communication cables are thin but big in capacity,It's an optical fiber, not a copper wireSo now there is the "fiber optic cable, copper, theft useless" argument
There is no electricity in the communication cable,It should be said that the current is very small,And it only has very little current when communicatingIf you use the tongue to add a telephone line during communication, you will feel numb,Someone used to test the phone line before it was repairedCommunication cables are thin copper wires, each of which corresponds to a telephone
