- I have an Arris Surfboard 8200 modem and pay for Gigablast service in the New Orleans area. My modem shows a blue light for bonded downstream, but green light for upstream. Modem status shows 4 upstream bonded channels with power all 45.5 dBmV or greater. Is the upstream light staying green instead of blue because of a line issue, or is it because DOCSIS 3.1 upstream is not supported yet in my area?
- Up until last week my ARRIS SB8200 was receiving DOCSIS 3.1, indicated by the blue lights on the front of the modem. Directly wired in I was pulling 900-940 mbps down. Those lights are now lit green, representing DOCSIS 3.0, and I’m now limited to 500-550 mbps. I’ve tried numerous resets and even bought a second SB8200 to test, same issue I have had no changes to the coax line and I am not using a splitter. Looking for suggestions, hoping to avoid the $75 charge to have someone out to my home if at all possible.
- I work in IT and my client called because Cox sent them a new Arris CM8200 cable modem. I asked if they upgraded to a higher speed plan that would require it, but they hadn't made any changes to their services with Cox. It seemed odd, but since it was provided at no charge and the modem was essentially an updated version of their current SB6183 modem we went ahead and installed it.I explained the differences between DOCSIS 3.0 and 3.1 to my client and that 3.1 is more efficient with how it uses the available spectrum on the cable lines. (QAM256 vs. QAM 4096) Now the bad part.... After upgrading, they started to notice problems with call quality on their VoIP phones. I wasn't made aware of it initially as they contacted the VoIP vendor for help. After being made aware, I ran some ping tests to see if there was any obvious problems. Sure enough, pinging the gateway on the Cox side along with Google and Cloudflare DNS showed packet loss. We contacted tech support to see what could be done about it. We were informed that the node we were using was noisy, overloaded and experiencing capacity problems. Since speed was not a factor and reliability was more important we decided we should try to switch back to the old cable modem. With the problematic and noisy node we were on, running the older, but less efficient QAM256 modemmight help alleviate their problems. After all, they hadn't experienced any problems before installing the newer modem. Also, the previous SB6183 is still a modem on the Cox business compatibility list. Cox Business Certified Gateways and Modems | Cox Business So we called tech support to swap the old modem back, but we were informed that wasn't possible. I was told upgrading to DOCSIS 3.1 was a one way street and we could not reinstall our old modem. Installing the DOCSIS 3.1 modem offered little benefit to my client, but benefited Cox by helping them avoid a costly node split. So now they are stuck with poor quality internet and have no other option other than to repeatedly call tech support and complain. After more than a dozen phone calls with no resolution I was referred to the customer retention department. This is an unacceptable situation to put a business in. So beware that Cox may send your a new modem, but make sure that you will benefit from it before installing. There is no going back once you've upgraded, even if it results in a connection of worse quality.
“What’s UP?” Problems since new firmware push for MB8600: 8600-19.3.15; VERY SLOW UPLOAD SPEEDS, plus broken modem admin utility/GUI“What’s UP?” Problems since new firmware push for MB8600: 8600-19.3.15; VERY SLOW UPLOAD SPEEDS, plus broken modem admin utility/GUI Anybody else with an MB8600 notice very low upload speeds these past fee weeks? (Especially since the push of 8600-19.3.15?) Plus, 0 up on OFDMA, 1 down on OFDM. Acquire DS channel: 849000000 Hz. In re: the admin utility/GUI (192.168.100.1 ... THE EVENT LOG IS MISSING(?!!)... the complete list of channels is missing... the log out function is missing, etc. Anybody else with these issues? I’ve factory reset using the admin web utility/GUI, I’ve hard reset using the paper clip in the reset button on the back of the device, I’ve Cox modem reset, I’ve rebooted using the modem web admin utility, I’ve rebooted using the on/off button, I’ve power cycled by unplugging, I’ve unplugged the coax and plugged back in, etc... I’m in the New Orleans, LA market. THANK YOU!!
- I've been a Cox customer for 22+ years. I've rarely had any issues. A few years back, I had had voltage on my upstream and they replaced a cable from my house to the pole. But other than that, no issues at all. I had a 16x4 Docsis 3.0 Netgear modem. Was on the 300/30 plan. It was pretty fast, like I said, no issues. So last week I got the email blast about upgrading to Docsis 3.1, figured I would go ahead and pull the trigger. It worked blindingly fast for the first day or so, was getting around 850 down and 34 up consistently, no issues. Then it started dropping to nothing. Every day since then, still getting about 750-850 down, but only getting 0-10 up. It says I have between 40-60% packet loss. Constant disconnects. Cox is telling me there is "noise" on the upstream line. So what changed between me having Docsis 3.0 and switching to Docsis 3.1? I have a Motorola 8600 modem. Is Docsis 3.1 more susceptible to noise?
- I am having the Fiber optic Gigablast (960mbps) installed in a couple of weeks. I have the Fiber ran to the house and have an appointment in early september. Here is my confusion, the phone rep informed me about needing a cable modem with a Docsis 3.1 to met the standards for the GiG but when I when to the store the rep said I don't even need a cable modem as long as I have a Router with GiG capability. The store rep stated the installation would come with a box (which I don't have to pay for, scary) that converts the sign from the fiber optic so that the router can use it and no modem needed. What which is it modem or no modem.....installation $100. Please clear up my confusion...my current modem (CM600) will need to be replaced if I need a modem. thank you in advance, buddy
- Will Cox ever be able to take full advantage of Docsis 3.1 in terms of Upload speed? Will we ever have symmetrical? I'm seriously considering basing my home purchase on the availability of fiber internet (which is also abysmal in the Phoenix, AZ area between both providers) because I have serious doubts Cox will ever deliver. My internet bill (gigablast and unlimited data) is my 2nd highest monthly expense and I just don't feel I get my money's worth.
- I have been back and forth with Netgear and Cox trying to solve my gigablast approved devices CM1000 modem and R7000P Router only reaching below 168mgbs sometimes reaching way below 100mgbs. Netgear said it was the power that was wrong and should have been positive 7 not in the negatives as mine currently is still. Modem:https://imgur.com/CR4iGwl SpeedTest:https://imgur.com/INa4zzoI'm tired of going back and forth for a year now. I don't want to get cox's devices for rent, that is why I bought my own as their website said should be approved!!! I will see what happens this round, or can someone actually help on this forum??
- Can anyone confirm that the CM8200 andSB8200 are identicalwith the exception of the CM beeing the carrier version and the SB the retail version? And is there any reason to consider theMotorola Zoom MB8600 oer the CM8200/ SB 8200?Both are using the Broadcom BCM3390 chipset and not an Intel’s Puma 6 or 7 with the latency bug. Planning to shop the CM8200 that's $180 from Cox vs the SB8200 that you can find for a little less.
- Hi, I recently upgraded to a DOCSIS 3.1 modem and Gigablast and I have what is pretty clearly the textbook problem where an old analog filter on the line blocks channels below about 600MHz, preventing DOCSIS 3.1 from fully working and limiting my speeds to ~600mbps. I can log into the modem's built-in spectrum analyzer and see that I have great signal down to 600MHz, where it abruptly drops off. The modem status page indicates I am only connecting on 20 channels, and the remaining channels have a null signal level. The status light on my SB8200 which lights green for DOCSIS 3.0 or blue for DOCSIS 3.1 is lit green. Despite all this, when I call Cox support, their "system check" says my modem is working "perfectly" and supposedly "will not let" them create the service call for the tech to come remove the filter. This should be trivial to address but I can't get it addressed. Has anyone gotten a similar issue resolved? Is there a moderator here who could reach in and get this call scheduled for me?