Maybe there are some phone installers who can help me out: Customer I do work for has 4 lines and a Fax, totalling 5. I believe they tie into some type of phone system, but Im not sure. Each phone takes 2 phone lines 1/2 and 3/4. I had Verizon DSL come out and install DSL. They came out on Tuesday and installed the DSL, but I wasnt there. I was told it was ran to POST 4 on the Demarc. Well I get there today and checked out the Demarc. After that I noticed line 3 was out. Right off the bat it seemed 2 wires were disconnected and one of the screw downs was lose. The customer said she thinks it wasnt working earlier that day as well. So here's some pics of what I see: The jack labeled "2" was tagged with the new DSL installation. I went thru the other jacks and labeled them as you can see with the sharpie marker. Below the DSL (2) Jack are lines 4, 1, 2, FAX. 3 is missing. Im thinking the installer took the frist jack which was 3 and made it the DSL. Also, what is above thats labeled (1)? If you squeeze the black clasps the door opens. Coming in from the pole outside are 2 thick wires. One is thick white (2) with 10 wires, 8 being used and tied to some of the right side posts on the demarc. 2 wires are bent back and the ends cut. The other black (1) is a flat cable with 4 wires, 2 being used and 2 were just hanging off with the wire stripped back, seeming like they were connected because one was "resting" against one of the posts. I believe these 2 wires hook into the jack that was tagged as DSL. And finally, the first pic (1) on the other side there are 2 wires that run down into the cat5 wire and go. Last thing that may be important to mention, is that the voice lines are provided by AT&T and the DSL by Verizon. So can anybody make sense of this? And maybe tell me why #3 wouldnt be working.