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Just got CDV added and noticed a speed decrease of my HSI

Frequent Visitor

Just got CDV added and noticed a speed decrease of my HSI

I have had Comcast interent service for over 2 years in my home and had a leased Motorola Cable modem.  I typically use tools at http://www.dslreports.com to test bandwidth, and used to see DL speeds of 8-12Mbps depeding on the time of day or the location of the test provider.
 
Since getting CDV installed, with a single-unit ARRIS eMTA that replaced my Cablemodem, I run the same DL tests and my speeds CAP @ 4Mbps.  No fluctuations of speeds varying from 2-4Mbps or spikes up to 6Mbps... just a flat 4Mbps.  So, I suspect that there's some built-in QoS enabled to set aside a certain amount of speed for the phone service.  But over 30%?
 
I called Comcast and spoke to an agent.. he stated that since they don't guarantee bandwidth speeds that the *only* way that I could ever see those speeds again is if I PAY a monthly fee to add back a leased cable modem.
 
Is that right? 


Message Edited by gs32 on 03-26-2008 03:21 PM
Contributor

Re: Just got CDV added and noticed a speed decrease of my HSI

I was wondering the same thing...
 
Connection Expert

Re: Just got CDV added and noticed a speed decrease of my HSI

my understanding of the voip modem there should be no speed decrease.
maybe that modem is more sensitive to signal issue then your last modem.
post signals from modem click this link



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Frequent Visitor

Re: Just got CDV added and noticed a speed decrease of my HSI

Signals are fine, as stated by the Comcast phone rep.
 
What I dislike hearing is that in order to get my previous higher speeds, I'd have to pay additional $$ per month to lease a modem that I already had. 
 
The phone representative even had the audacity to tell me:  "What do you really need more than 4Mbps DL for?!?!"
 
 
Regular Contributor

Re: Just got CDV added and noticed a speed decrease of my HSI

Dear gs32,

Your CDV account looks normal, and your High Speed Internet service is coded at the 6 MB level. It’s simply not accurate to say that the only way you will ever see higher speeds again is to add back a leased modem, at an additional price. The modem you’re currently using (an eMTA) is quite sufficient for your speed levels. I apologize for the misinformation, but if you’re still experiencing slow speeds, please contact us again and request the agent to escalate the issue, if necessary.

Richard

Frequent Visitor

Re: Just got CDV added and noticed a speed decrease of my HSI

I have no doubts that the settings for the account are "normal".  I've listed the observations and differences of my speed performance since moving from a standalone cable modem to an eMTA.

The reality is that I was achieving higher DL speeds using my old modem than this new eMTA.  That's the bottom line.

And since Comcast doesn't "guarantee" their advertised speeds of 6-8Mb, I really have no recourse unless I pay out of pocket.

Here's another thing that maybe you can assist me with Richard_J... Is there a way to test "PowerBoost" DLs just in case some sites bandwidth tests don't test it properly?
Connection Expert

Re: Just got CDV added and noticed a speed decrease of my HSI

this one is good
there others



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Frequent Visitor

Re: Just got CDV added and noticed a speed decrease of my HSI

I've done tests on speedtest.net, and it also shows that I'm getting subpar DL speeds compared to what I was getting prior to the CDV move.

My only thought on this is that powerboost may not be working correctly with my eMTA.

Can anyone verify the most recent Firmware revision for an Arris eMTA?  Maybe my out of box eMTA isn't current?  <shrug>
Connection Expert

Re: Just got CDV added and noticed a speed decrease of my HSI

if you have the same as my
5.0.50G



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New Poster

Re: Just got CDV added and noticed a speed decrease of my HSI

You really didn't expect an honest answer did you? But I'm glad for your post I ALMOST got the service and now I'm so glad I didn't.
Regular Contributor

Re: Just got CDV added and noticed a speed decrease of my HSI

Firmware Revision: 5.2.37C
 
Was d/l'd today, but have no idea what it does
- Bill