Lots of good information on pricing and stuff, many thanks! However, I should have been more specific in my question. I want more information/specs/ standards for telco to home connections. My reason for asking is that I have searched around on the web and found that most demarc units described/pictured look like gray boxes on the side of ones house with a telco side and an enduser side. Mine comes from the pole, in through a hole in the house, and terminates at a four post connection block that looks as old as the house (35 years). I am wondering if the block is my demarc, or is it on the post. I also want more detail, but I'll take whatever is offered. :-) Thanks again, you guys are great! Troy