modem goes up and down

My info is in 2 posts as the internet was up and down while I was trying to send this.  Look under user = robr. If you read my 2 posts on this you will see I already said Ive had 3 cox reps here. and they rebuilt from the street and rebuilt all splitters and cables. that's why I am unsure what the 4th visit to my house is going to fix! Last rep improved s/n by 6 db and was quite proud of that - still did not improve. I can make it more stable by removing my countor box from that line. Gets it up to 36 db s/n ratio  according to the modem logs.

4th Cox Tech visited Friday.  Was a SUPER guy - as all 3 previous had been.  Went way above the call of duty.  After the 4 house visits, every inch of cable from the box on in has been replaced.  Every coax fitting rebuilt.  Every splitter checked and replaced by a new Cox provided advantech -3.5 bd.

This guy worked from the street in, checking levels. Rebuit my ground block.  Removed the old blue telephone box to try to pick up 1.5 bd maybe. Saw there were 2 drops - made sure only one was in use.  Removed and replaced the +15 bd amplifier, although that only helps the down - not the upstream. Then he pulled new cable outside the house and thru the wall directly to the modem.  Used his modem to check - and it matched the results of my replacement Linksys CM3008 logs.  So it wasnt my modem - as identifed numerous times by cox support. I replaced it in Nov 2016 - seems I did not need to.

Seemed - OK and he was packing up.  And BEFORE he left my house it was down!  Stayed down for 26 hours! Hard - no returns. He said - indicating it was upstream from me.  He checked at the green box at curb I share with a neighbor.  HE opened a new ticket himself as I waAfter

Aftetr the 26+ hour hard outage - it came back up. Has been down 1X in 2days for a short period. A couple of minutes.  I called support, they cant tell me what changed or why there was a 26 hour outage.  I think it is upstream and possibly affecting more than just me.

I went to cox store - they escalled to field supervisor - awaitng call since Friday. I have a form number.  Who knows!  Will sacrifice small animals next.....

Amazing! Was told in multiple calls it was my modem.  Wasnt of course.  Since the major, 26 hour + outage, my service massively improved! Whatever they fixed upstream seems to have helped me. Been down only 3X since the tech was here and only for the No Ranging Response received - T3 time-out error for 1 minute or so each time (per my modem logs).  Seems there really was an upstream issue beyond my house.

I am also confused, as the Sand Canyon Cox store opened a "form" for me for a visit from a supervisor.  Form is KSP0000005458358.  Been some time.  No call.  The usual experience continues.  When I see or speak to someone they are super nice and helpful.  But seems if I'm not standing there - nothing happens it seems.  

What is status of the form?  Did it go the way of my canceled appointments? In my cancellation, the support deak said the field tech noted in the case log that I had moved!  I assure you as a 18 year cox customer, I had not.  Waited another week for another tech to come who could find my house!

That was also blamed on me in the paperwork!

Why does Cox automatically assume that the problem is inside the residence? A few months ago, the call center said that they could not see my modem, even I had service (but very slow). The call center insisted that i needed a new modem. I purchased a 16X4 modem, gave cox the information, hooked it up, and the call center said they still could not see the modem. Instead of verifying the signal and noise levels in the outside plant, Cox still insists that it is a problem within my home.

I rebooted my modem once again about two hours ago, and when I log in, I see the "corrected" number running 20-25% of the "uncorrected" number. Is this in the acceptable range? What should the power and SNR be running on each channel? What should the power levels be for the upstream channels?

How often should modems and routers need to be rebooted?

"Signal issues aren't something that can be addressed remotely from this end." That may be the case, but is Cox able to remotely monitor signal levels and SNR levels? The information is available on the modems, and should be available at various Cox equipment points. Cox should be able to pinpoint trouble locations remotely and then send the appropriate technician.

Cox has done nothing to prove to me that the problem is not their problem. FIOS is looking better all the time.

Still no reply to my "form".  Par for the course it seems.  

Was down briefly this am - around 1230am - so my modem logs tell me.