What is the role of patch panels generally, why should the switch connected?
The middle do not have to deal with, do cable trench, the general width of 70CM, the depth of 100CM. With angle iron bracket installed in the cable groove side, installed every 1 meter, and each bracket must be grounded. The cable trough is covered with a cable cover. For the supplementary answer: 10KV line can be done very long, how long the cable can be done long, the cable is not long enough to do the middle of the high pressure distribution box, waterproof rating of at least IP65.
the set-top box with yellow and white three-color terminals, old-fashioned TV generally with at least one group of this three-color terminal (individual old TV only yellow or white red two-color terminal), and some old TV with two Group, a group is the input interface, a group is the output interface
Look at the customer asked a few kilometers is no problem
