Integrated wiring, voice information points in each floor into the patch panel, or cable convergence in a layer of the total control room and then on the distribution frame?
Core connected to the core, the outside line is shield, plastic skin minus, the video cable is coaxial cable, is a core and a shield
That is called 3.5 to double lotus transfer cable or adapter, X treasure has to sell, usually within 10 dollars
Old video is basically using A / V terminal output signal, is an analog signal, and computer connection need to install a card. Analog signal acquisition card (or non-card) price is not low, I guess you are using their own, I suggest you buy a "TV card" its price is generally more than 100 yuan, with it can watch TV on the computer, it also has Acquisition function, you can simulate the signal directly to the computer to become a DVD or VCD MPG file, if necessary, can be made into a CD. The quality of doing so can also be used by me. When you buy a card, remember to buy the gallbladder, the quality of the HILIPS chip is better.