Advertisements Hi all, I've got an odd situation that i can't quite figure out. My service provider is RCN and i've got cable and internet with them. We have a whole home TIVO DVR setup, with the 'main' TIVO box in the living room, and the 'mini' box in the basement. From what I understand, MOCA is already in use across these two boxes. What i'm trying to do is expand the MOCA network to the upstairs office in the diagram. The way the setup is currently: the cable coming in the garage is split, one line running to the living room, one line running to the basement. The living room line is then split again, with one leg going to the Actiontec ECB2500C, and the other leg going to the main TIVO box. The ECB line then outputs thru to the modem. It also has the network cable plugged into it. I'm trying to put an Actiontec WCB3000N in the office upstairs. When i connect it to the office wall jack, it can't find the coax signal. The WCB detects MOCA in every other room with a cable jack downstairs, but it has an issue with the upstairs rooms. it will intermittently detect a coax signal in the upstairs bedroom next to the office, but the office never detects a signal. Normally, i'd think i have a bad wall jack or connection in the office. BUT if i disconnect the splitter in the garage that feeds the upstairs bedroom/office, and i connect a WCB box to both wall jacks, i get coax signal in both rooms? Being that its disconnected from the rest of the house, its no longer on the network, though. I've been working on this for weeks and can't figure it out. For my diagram, red lines are coax, blue lines are Ethernet cable, and the sp1/sp2/sp3 are the splitters that i've currently got running. Any help is GREATLY appreciated and please let me know if i need to clarify anything, i realize this description is really in-depth.