Unstable download speed

Thank you Kraze fir your respond. I've checked what I could (and Comcast technician did it as well). Here are some numbers:

• Downstream Power Level: -10dBmV to +10dBmV is acceptable for modems.  -7dBmV to +7dBmV is the ideal range and is also the specified range for telephony modems.

Actual is -4.5 - -5 dBmV

• Downstream Signal to Noise Ratio (SNR): This number should be at least 35dB. Higher is better. Anything less than 35dB and you will probably have slow transfers, dropped connections, etc.

38.605 – 38.983

• Upstream Power Level: This should be between 35dBmV and 55dBmV. If your levels are beyond this range, you will likely see frequent disconnects or modem reboots.

52.250 – 52.750

Modem is 3 months old.

It looks like there are some wrong settings on Comcast side, but they don't want to work on it.

Problem is still there, doesn't matter how may times I called them. An alternative provider would be a solution, but we don't have other in our area, so problem is not fixable.

Hello art360 and welcome to forums,

Based on the information you provided I looked at your signal levels to your location. I would like to get a tech out to your location to look over your configuration. If you would like to move forward with this option would you please send a private message with your preferred timeframe for a a tech visit, and the best contact number for you to be reached on.

Thank You

Hello Michael,

This week I was monitorig my speed by checking it at least 10 times a day. Most of the time download speed is 80-120, upload is always good: 20+.

Sometimes download goes to 30-50. Modem  reboot always brings download to 120, which stays for at least 30 minutes.

Any ideas?

Hello art360,

First thought is for me to send a factory rest to your device followed by restoring any provisioning that you may have left on the modem. Beyond that our options are...

1) Send a tech

     a. Tech to check the lines

     b. Tech to swap modem

2) Send to Tier II for review of all provisioning to device and along network.

3) Escalate issue requesting Tier II send issue to Line Tech, or XOC/NOC for further investigation of physical network. (Most physical network issues can be resolved by business technicians without need to escalate this far.)

At this stage in your trouble shooting I can do the factory reset but it might be best to send a tech to your location. Please let me know how you would like to proceed.

Hello Michael,

It looks like a problem Comcast is not able (or doesn't want) to fix.

If you think one of these efforts can help me please send a tech ot Tier II.

I'm here every day for a while.

Thank you anyway,

Artem

Hello Michael,

Please pick any direction to improve my speed. It's pretty often goes to below 30 and I need to reboot the modem to get it back.

Please advice.

Artem

Thank you art360,

Please check your private messages for more information.

hello art360,

I see that your ticket has been closed. Has your internet service improved?

Hello Michael,

I had your tech coming and checking everything. He found 3 week points and fixed them, icluding modem replacement.

Speed is 30-70, sometimes 120. Tech thinks we have a lot of noise here, which takes my speed down. I was speaking with him yesterday: I don't know why ticket has been closed as he promised to continue working on this issue.

Thank you for checking,

Art

Thank you art360,

I am not seeing any notes from the tech as to what those weak points are nor when he would be out to finish working. Please message me if you continue to run into service issues.

Hello Michael,

John fixed the possibly noise-generating splitter, reversed the filter wrongly installed in the box outside and replaced the modem.

Yesterday I was pretty optimistic, however...

Below is my statistics after the modem replacement (2-3 last digits represent download speed). I see it as a generally unstable Comcast signal or (following John's idea) large fluctuations from the noise in the area. Or .. somebody is using Internet in our area, but I couldn't find any system in these fluctuations.

http://www.speedtest.net/my-result/5418788888 86

http://www.speedtest.net/my-result/5418836917 42

http://www.speedtest.net/my-result/5418877682 35

http://www.speedtest.net/my-result/5419006042 120

http://www.speedtest.net/my-result/5420320438 22

http://www.speedtest.net/my-result/5420359132 120 upon reboot

http://www.speedtest.net/my-result/5420919634 39

http://www.speedtest.net/my-result/5421026098 22

http://www.speedtest.net/my-result/5421415760 120

http://www.speedtest.net/my-result/5422993878 120

http://www.speedtest.net/my-result/5423497576 110

http://www.speedtest.net/my-result/5423749849 34

http://www.speedtest.net/my-result/5423875151 40

http://www.speedtest.net/my-result/5423875151 40

http://www.speedtest.net/my-result/5425598888 120

http://www.speedtest.net/my-result/5426002898 20

http://www.speedtest.net/my-result/5426881604 31

http://www.speedtest.net/my-result/5428510356 11

http://www.speedtest.net/my-result/5431356410 120

http://www.speedtest.net/my-result/5431587169 110

http://www.speedtest.net/my-result/5431719939 76

 http://www.speedtest.net/my-result/5432726153 88

http://www.speedtest.net/my-result/5433101384 117

http://www.speedtest.net/my-result/5433308928 11

http://www.speedtest.net/my-result/5433338529 36

http://www.speedtest.net/my-result/5433354477 17

http://www.speedtest.net/my-result/5433505429 116

Hello Michael,

based on my last 3 days statistics Internet is not getting any bettter.

I was speaking with Cisco (we're about to purchase some equipment for conferences, I hoped I can have more stability): they cannot guarantee a good quality with this Internet.

I'm still paying good money for the stable 120. Do I want to transfer back to Xfinity or do you have any other Internet channel I can use? Will it be stable if I order 150 plan?

Any advise will be greatly appreciated

Art

I want to test some things with your modem provisioning to see if they will help. I will have to reset your modem a few times in order for the configurations to take effect. Please test your speeds and let me know where we stand.

Hello Michael,

here are my last records:

http://www.speedtest.net/my-result/5450455406 123

07 03 16 21:01 complete interruption

07 03 16 21:04 176 and interrupted again

http://www.speedtest.net/my-result/5450793998 180!!!!!!!

21:22 interruption. Modem shows I light on top only

http://www.speedtest.net/my-result/5450813965 180

21:25 modem is down. Called comcast: shortage in the area

http://www.speedtest.net/my-result/5450827430 178

http://www.speedtest.net/my-result/5450875802 85