Cable TV
Cable TV was started first in USA, when people there enjoy the cable by setting Dish Antenna due to not getting signals on high deltas. In various countries of world, the programs of many TV channels used to watch by only cable TV service. This system is still running In many remote areas, whereas in big and small cities there have cable TV facility through available cable technology.
DTH
Direct to home means DTH receive signals direct from satellite. With it the service providers provides some free or paid channels through set top box. In it the consumer direct adds to telecaster. It reaches in remote areas easily. To see the TV through DTH, the need of cable automatically ends. With DTH you can see more than 500 channels. For DTH connection you need to have a Dish Antenna and a Set top box. If there're more than one TV set in your home, then you should have to take separate connection for each one. In it the first connection calls primary and other one calls secondary. In DTH, there're many facilities like Basic standard box, whereas second HD (High Definition) and with recording and without recording.
IP TV
Internet Protocol TV or IP TV serve TV programs with the help of Internet Broadband. In 1994 the ABC's 'world news now' was the only first program which was served on Internet. In 1995 a video product was created which named IP TV.