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CM1100 Modem Not All Channels Active "Partial Service" (COX) Gig Service
Modem: Nighthawk CM1100 Router: Nighthawk RAX80 Hi, I have Cox gigbit service but I only get around 630mbps max (sometimes 590mbps). I logged into my CM1100 modem and it says that the Downst...
- So here is an update and solution.
After calling several times to convince my cable company to make a house call, they finally did. It turns out the cabling in my house was fine. The problem was that they had a "channel filter" device on their outside cable line. It took a few weeks for them to come back with a bucket lift so the they could reach the top of the near by utility pole to remove it. The tech told me they had installed those channel filters a few years back so they can block people from "stealing" or accessing and viewing cable channels from internet-only cable subscribers. But now with Gigbit internet service those same channel filters also block modem channels making internet signals unstable and slow. When I log in to my modem, it now shows it firing on all cylinders (channels). I'm a happy camper. Thanks you all.
Glad to hear you got it fixed!
How do I get all Downstream Bonded Channels to be locked. I have one unlocked (#32). Comcast says they can't do it, and Netgear says they can't lock it either. Can I do it myself. I'm not much of a tech person, but Netgear customer support recommended I get it locked so I don't loose connectivity. Thanks for your ideas.
Sometimes the last channel 32, won't be lock in.
Depends on what ISP supports and signal on the coax line. Have the ISP check the signal and line quality UP to the modem.
Be sure there are no coax cable line splitters in the between the modem and ISP service box.
Be sure your using good quality RG6 coax cable up to the modem.
Be sure to power OFF the modem for 1 minute them back ON.
RichardDM wrote:How do I get all Downstream Bonded Channels to be locked. I have one unlocked (#32). Comcast says they can't do it, and Netgear says they can't lock it either. Can I do it myself. I'm not much of a tech person, but Netgear customer support recommended I get it locked so I don't loose connectivity. Thanks for your ideas.
In most areas Comcast has deployed 31 SC-QAM + 1 OFDM and in some areas it is 32 SC-QAM +1 OFDM.
you cannot make it 32 if they have not deployed those channels in your area.
32 is not that common from what I saw
Thanks everyone for your insights. It sounds like my one unlocked channel is not that much of an issue. I will update my cable to RG6 cable, and make sure no splitters.
By doing those corrections, does that have any effect on intermittant service? Or does Comcast/Netgear need to do something to lock all channels?
