homepage Forums SimHQ Community Community Hall Does anyone understand this?

We been having internet issues at home for 1 1/2 month and right now is the 5th time they are here.

Everything work ok for 3 years until 1 1/2 months ago.

They have replaced cable, modem, router, even something on a pole outside.

Some of it I think.

We’re looking at the bit of the line that is between the CTMS - Cable Modem Termination System aka the edge router at the cable company hubsite and to your CPE - Customer Premises Equipment. BER being Bit Error Ratio and MER being Modulation Error Ratio. Your BER is low which is good, and your MER is high which is good. MER is like a signal to noise ratio.

The dBmV are are measure of the attenuation on the cable, in the sense that you want some dBmicroVolts as they represent the signal. If the dBmV reading is low, the signal is very faint. Rx and Tx obviously are receive and transmit, respectively. The measurements are relevant for the selected Channel which is 101 at 657.000 MHz.

256 QAM is 256 Quadrature Amplitude Modulation which is a fancy word for carrier wave. Carrier waves are used to tuck your information bits to a sort of conveyor belt so you know where to look for them.

ICFR or In Channel Frequency Response is a measure for the difference between peaks and valleys in the dB on your line, and if you check the channel width it seems to be 6000 MHz. In this case the difference between high and low according to my information should be 3 dB or lower but please note that I am attempting a more or less informed guess here. I’m not familiar with your operator’s practice and network and it seems that the system has passed the test if the green checkmarks are anything to go by. Certainly your ICFR at 1.2 dB seems okay.

So, I’m no expert in this but the numbers to me seem fine.

Thank you McGonigle.

The tech left after 3 hours, he said it's somewhere in their system and he is also seeing other people in the area are affected by it.

So why did the techs that were here 4 times last 1 1/2 months couldn't see it.

In those 4 times, they replaced everything except the structure we live in.

Tech said he will put it a maintenance request for the area but he has no idea when it will be fix.

Could be days or weeks.

What kind of issues specifically are you having? wireless or wired issues?

home wifi cant open anything on phone, cant stream Prime, Netflix, websites with no videos, just text news, not opening

did upload download speed test and it stops after downloading one small piece or uploading a small piece

OK that could be a multitude of things. how is your wired connections like streaming on a wired connected PC or download speeds and such. if you are having issues with wireless get a wifi analyzer and check your signal strength and channel overlaps from other wireless devices..

This is the past 1 1/2 months per the tech that was here yesterday





This is now , after some box in the area was accessed by their techs and parts of it repaired

everything at home is working now, we can all get on WiFi and stream and have internet on computer and laptop and stream Netflix on TV

probally a rodent to blame nawing on the wires or similar.. so all is well now..

Error detection these days are rigid and highly structured exercises designed to minimize cost while ensuring standardised methods. This is why;

a) you always blame the customer first because that way you are not spending company money or time but getting the customer to work for you. (Admittedly, a lot of errors are customer induced.)

b) you follow a systematic but at times rigid method for eliminating sources of errors that is not necessarily optimal when viewed from a pragmatic point of view.

Your experience indicates to me that you cable operator has the a) part doven to a tee but perhaps struggles with the b) part of the basics of fault finding and correction, or bad internal communications. I used to work in a telco and we always joked about how bad we were to communicate.

Yes when you call them and say my internet is slow or not connecting, they always say something is wrong with your computer, laptop, cell phone, router, tablet.