Only one cable is required for TV, Internet, and Telephone. This is called, "Bundling" by Charter, likely called something else by different providers, but it's all the same. My suggestion is to discuss your plan with your cable provider. They will advise you on the best way to run the master cable to the house, I'm not sure that burying it is the best plan, but I don't really know for sure, and since it's already done, you may have to live with what you have or abandon it and let the provider start over. The provider will install the cables inside the house. They can put outlets anywhere you want them. I do not think it would be wise for you to do this yourself as if there was a problem with the installation, you would be on the hook to pay for the repair. The installers use the proper cable, connectors, outlets, and etc.. Often you and I try to use Radio Shack or discount house equipment that is not always of the best quality. I believe outlets are usually just electrical boxes with a face plate that the cable outlet connects to. I have a couple of them in my home, and they work just fine. At any rate, I'd start with the service provider.