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Just tried to move my Cisco cable modem (DPC3010, DOCSIS 3.0) from one room to another. That is, disconnected from one room's coax cable and connected to another room's coax cable. Couldn't get a link light. Called the cable company and they told me the cable modem will only work when connected to the coax cable it was originally connected to. They said in order to move it a tech would have to come out.
Found this odd, but perhaps it is true. Still, is there something unique about each individual cable in my house such that my cable modem is matched to only one cable? Most of the cables in the house are just split away from the main line. House was built around 1997.
Does this sound right? Any way around this such that I can config it myself to work in the desired room?
I'm not a cable guy but that's the way it's been for me over the years.
Don't know if they use splitters or filters but the cable modem is tied to the cable it was first installed to.
I researched a little on the internet and most of the replies to questions similar to mine implied the cable modem can be hooked up to any live cable in the house - switching was no big deal.
I guess I don't understand how the individual cables in the house can be made unique in such a way that the modem will only work on a subset of them.
Still, if that is true, is there an "easy" way to get around that? Something in the outdoor cable box on the outside of my house? I don't want to request a cable tech to come out - I doubt it would be free. Plus, I'd like to know how to change whenever I want rather than calling the cable tech any time I want to try something different.
It's been a while since I had a cable modem, and cable, but I believe it is a frequency related thing. Somewhere there's a splitter or filter that changes the frequency of the signal on that one cable. You might be able to trace the cable for the modem back to it's source, and see if there's a filter in line, or if the splitter has different frequencies on each output. If so, then you could move the device, or swap the splitter around.
It's been a while since I had a cable modem, and cable, but I believe it is a frequency related thing. Somewhere there's a splitter or filter that changes the frequency of the signal on that one cable. You might be able to trace the cable for the modem back to it's source, and see if there's a filter in line, or if the splitter has different frequencies on each output. If so, then you could move the device, or swap the splitter around.
This may be a good check. I did do a little reading on the internet and someone had written something about cylindrical filters installed in the context of a similarly asked question.
Now I just need to get to that box and spray out all the black widows and check it out.
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