![]() To make sure that the underlying issue is the modem (and not something in Cox's implementation or your specific drop or internal cabling), you may want to, for at least a short period, rent a Cox modem. Presuming it is a related issue (and just because it has similar symptoms does not automatically mean it is), Arris could do the same, should they wish to do so. I'm hopeful that a firmware upgrade would resolve it: Cox currently has deployed AB01.02.053.05_051921_193.0A.NSH, which is from May 2021.That is a recent firmware, although perhaps not the latest Arris has built.Īs I recall there were a number of D3.1 broadcom based modems which had issues with OFDMA (when Charter deployed OFDMA as an emergency measure in some locations to deal with the suddenly influx of zoomers during the pandemic a number of the customer owned Netgear D3.1 modems had issues).Įventually Netgear got a newer firmware certified for one of their modems (but not all of their impacted modems) which resolved the OFDMA issue for that modem (which I think was their latest model). I'm using an Arris SB8200 cable modem, and this upgrade is resulting in T3 and T4 timeouts, which results in the Internet connection dropping for 10-15 seconds intermittently. ![]() After a lot of troubleshooting I figured out that Cox is rolling out upgrades in my area and are adding ODFM upstream channels. ![]()
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