I was talking with a family member I was visiting and they were complaining about the Cox service locking up all the time. They have to reboot their modem every 2 or 3 days. It's a 4 channel SB6121 modem. No problems with hitting their 50 megabit speeds except during the lock ups. I figured they were hitting the dreaded SB + Cox issue of it locking up. I enabled QOS for them on their router and scaled back the upload and the problem seemed to go away to about once a week lock up. I still don't get why Cox hasn't figured this problem out as I hear it all the time from everyone with SB 4 or 8 channel modems.
Fast forward to today, I was at their house and checked their signals and saw +10's across the board with 37-38 SNR and 42-44 power on the upstream. Way too hot. So I open the outside box and see a 4 way splitter with the 3 ports terminated. WOW! That's a 7 db drop and they still have +10 at the modem. I've never had that hot of signal issue. I was going to throw in a 3 way (w/terminators of course) and put them on the 7 db drop port. This should get their signal down from being so high. I don't have an attenuator unfortunately. Should we call Cox about this issue and have it turned down at the tap instead of all these splitters? If so, how would I get them to understand to send a line tech and not a house tech?
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