Welcome to Comcast Help & Support Forums
Find solutions, share knowledge, and get answers from customers and experts

New to the Community? Start here.

5,382,675

members

90

online now

1,613,530

discussions

Re: Slow Internet

Posted by
Visitor
  • The Community would like to Welcome you!

Member Since: ‎06-23-2011
Posts: 2
Message 1 of 5 (1,412 Views)

Re: Slow Internet

I found this forum when researching my sudden slow internet speeds. We have had Comcast for about 5 months and it has worked very well up until this week. I have noticed a drastic slowdown of file downloads for work, downloading video's on YouTube and just general browsing. I'm not very computer savy but would appreciate any help you could give me to figure out what is going on.

4 REPLIES
Posted by
Visitor
  • The Community would like to Welcome you!

Member Since: ‎06-23-2011
Posts: 2
Message 2 of 5 (1,402 Views)

Re: Slow Internet

By reading the request for information listed earlier on this forum, here is what I have currently:

 

Downstream   DCID Freq Power SNR Modulation Octets Correcteds Uncorrectables Downstream 1 1 579.00 MHz 2.50 dBmV 37.64 dB 256QAM 15819234982 98 0 Downstream 2 2 561.00 MHz 2.69 dBmV 37.09 dB 256QAM 9247554477 128 0 Downstream 3 3 567.00 MHz 2.72 dBmV 37.94 dB 256QAM 9669204777 130 0 Downstream 4 4 573.00 MHz 2.83 dBmV 37.64 dB 256QAM 9789811574 104 0 Reset FEC CountersUpstream   UCID Freq Power Channel Type Symbol Rate Modulation Upstream 1 9 31.60 MHz 33.75 dBmV DOCSIS2.0 (ATDMA) 5120 kSym/s 64QAM

 

Posted by
Edited on
‎06-24-2011 12:33 AM

Service Expert

Member Since: ‎11-10-2003
Posts: 5,499
Message 3 of 5 (1,391 Views)

Re: Slow Internet

[ Edited ]
Posted by
Connection Expert

Member Since: ‎12-24-2003
Posts: 49,753
Message 4 of 5 (1,388 Views)

Re: Slow Internet

The modem's upstream power level would be considered to be a bit low for a 64 QAM return carrier. Somewhere in the 40dB to 50 dB is recommended in most systems that use this modulation scheme. Perhaps you should book a tech to investigate and correct.

Posted by
Visitor
  • The Community would like to Welcome you!

Member Since: ‎07-28-2011
Posts: 1
Message 5 of 5 (1,190 Views)

Re: Slow Internet

What worked for me was when you login to your modem click reboot modem. It seemed to work better than a normal powercycle. I want from 7mb to 18mb download speed.

-->