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Forums » US Cable Support » Comcast » Comcast HSI » [Speed] Higher upload PowerBoost? 64QAM? DOCSIS 2.0?
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dadkins
Can you do Blu?
Premium,MVM
join:2003-09-26
Hercules, CA
·Comcast


4 edits

[Speed] Higher upload PowerBoost? 64QAM? DOCSIS 2.0?

Anyone notice that their upload PowerBoost has more or less doubled?

I used to get 3-3.5mbps for upload PowerBoost.

This morning... 5-6mbps

Last Result:
Download Speed: 26736 kbps (3342 KB/sec transfer rate)
Upload Speed: 6291 kbps (786.4 KB/sec transfer rate)
Latency: 24 ms



Have to see when uploading actual files... I'll post a screenie in a few

Mod Edit: See also ---> »64 QAM
»Something just happened in Chicago...
»New speeds in washington state
»Holy Cow Speed upgrade in northeast philly!!
»[Connectivity] New Upstream speed? Docsis 3.0?
»[Speed] Higher upload, upgraded to DOCSIS 2.0
»[Speed] Upload has increased
»Got new IP - Weird modem logs
»Higher Upload in Seattle
»Why did DOCSIS 2.0 disappear in the Parker area?
»Comcast Upload Speeds
»Normal Connection?
»Is there a way to see if I'm on DOCSIS 2.0?
»A thread about higher upload speeds.
»Anyone in Atlanta seeing the faster speeds?
»Anyone else in Atlanta getting Powerboost upload speeds?
»Comcast of Toms River, NJ system now Docsis 2.0
»Did Comcast recently give new speed upgrades?


--
Think outside the Fox... Opera

Rob
In Deo speramus, God Bless the USA
Premium
join:2001-08-25
Kendall, FL
·Comcast

Re: [Speed] Higher upload PowerBoost?

Some markets are undergoing tests in preparation for doc 3.0 testing. These markets might see an increase in speeds while the tests are being performed. The tests should be done by Sept 30, 2008.
--
CheckSite.us | YourIP.US

deblin
Dark Side of the Moon
Premium,MVM
join:2001-09-01
Middletown, DE

Re: [Speed] Higher upload PowerBoost?

said by Rob See Profile :

The tests should be done by Sept 30, 2008.
In other words, dadkins See Profile should enjoy it while it lasts!
--
He who is not contented with what he has, would not be contented with what he would like to have. -Socrates

mustang46

join:2005-05-06
Roseville, MI
nope not here...I have blast and rarely get more then 2.6mbps upload...I've never ever hit 3.0mbps on any of my speedtests.
Just ran a test...still 2.5mbps

my download is about the same as yours.

RR Conductor
RailRoadDude
Premium
join:2002-04-02
Redwood Valley, CA

1 edit
Nope, no upload powerboost doubling up north of you here in Mendocino County, just standard Powerbooster. We still don't have Blast! either, and I wonder whether we ever will.

sortofageek
Premium,Mod
join:2001-08-19
Valhalla Dr
clubs:
·Comcast

Host:
Team Helix
Distributed Comput..
Linksys
Comcast HSI
Comcast Cable TV
No.

Could you get your network guys to talk to my network guys ... oh, never mind ... you always win.
--
Join Team Helix * I am praying for these friends .

dadkins
Can you do Blu?
Premium,MVM
join:2003-09-26
Hercules, CA
·Comcast

Re: [Speed] Higher upload PowerBoost?

said by sortofageek See Profile :

No.

Could you get your network guys to talk to my network guys ... oh, never mind ... you always win.
On the phone with them now sorto...
--
Think outside the Fox... Opera

ztmike
Mark for moderation
Premium
join:2001-08-02
Michigan City, IN

2 edits

Re: [Speed] Higher upload PowerBoost?

No change here in NW IN

Last Result:
Download Speed: 15799 kbps (1974.9 KB/sec transfer rate)
Upload Speed: 2042 kbps (255.3 KB/sec transfer rate)

6/1 tier
--
ZZPERFORMANCE

anon123

Did your upstream modulation change or symbol rate? It's possible your upstream channel has more bandwidth to use now so powerboost is able to boost even higher...

dadkins
Can you do Blu?
Premium,MVM
join:2003-09-26
Hercules, CA
·Comcast

Re: [Speed] Higher upload PowerBoost?

said by anon123 :

Did your upstream modulation change or symbol rate? It's possible your upstream channel has more bandwidth to use now so powerboost is able to boost even higher...
Unknown - Motorola SB5100

Frequency 705000000 Hz Locked
Signal to Noise Ratio 39 dB
Power Level -6 dBmV

Upstream Value
Channel ID 11
Frequency 30400000 Hz Ranged

Power Level 45 dBmV

Looks like maybe a new upstream channel freq.

Even on this wireless laptop - upstream PowerBoost is cookin!

Last Result:
Download Speed: 16391 kbps (2048.9 KB/sec transfer rate)
Upload Speed: 6224 kbps (778 KB/sec transfer rate)
Latency: 23 ms

Thanks people!
--
Think outside the Fox... Opera

RR Conductor
RailRoadDude
Premium
join:2002-04-02
Redwood Valley, CA
·Comcast


1 edit

Re: [Speed] Higher upload PowerBoost?

Just for comparison-

Downstream Value
Frequency 573000000 Hz

Signal To Noise Ratio 38.4 dB

Power Level 0.0 dBmV
The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading

Upstream Value
Channel ID 3
Frequency 33000000 Hz
Power 43.5 dBmV

tenpin784
I Went To The Dark Side?

join:2001-03-30
New Durham, NH


1 edit
That channel ID of 11 is confusing.

Channel IDs say what port of the CMTS you are on in coordination with the MAC Domain.

At least, in the Motorola BSR and the Cisco UBR10k that I have worked with in the past 4 years.

With a channel ID of 11, that means there is at least 12 upstream ports in that MAC domain, which is a huge ratio (I try to go 1:3 or 1:4....1:12 is pretty much oversubscribed IN DOCSIS 1.x

With a channel ID of 11.....does sound like D3.0, as you can make the MAC domains a lot bigger because of the increased downstreams.

Edit:

This is mine, but I am NOT on Comcast, but I know for a fact I am on upstream port #5 of the CMTS.

Frequency 555000000 Hz
Signal To Noise Ratio 37.1 dB
Power Level 0.2 dBmV
The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading

Upstream Value
Channel ID 4
Frequency 32750000 Hz
Power 45.3 dBmV

dadkins
Can you do Blu?
Premium,MVM
join:2003-09-26
Hercules, CA
·Comcast

Re: [Speed] Higher upload PowerBoost?

??? Ask anyone here what my connection is like.
Always full speed, anytime of day.

Oversubscribed? sure don't act like it.

Wireless laptop, FTP upload to a server in N.C.(I'm in Cali) still faster by 1mbps.
--
Think outside the Fox... Opera

anon123

@comcast.net

Didnt you say that your Arris still surfs the net? I think those show modulation profiles...

On my SB5120 it shows my symbol rate:

Upstream Value
Channel ID 11
Frequency 28000000 Hz
Ranging Service ID 3337
Symbol Rate 5.120 Msym/s (this indicates a 6.4MHz channel)
Power Level 42 dBmV

dadkins
Can you do Blu?
Premium,MVM
join:2003-09-26
Hercules, CA
·Comcast


3 edits

Re: [Speed] Higher upload PowerBoost?

Yes...
ARRIS stats:

Downstream
Freq/Power: 705.000 MHz -7 dBmV
Signal to Noise Ratio: 36 dB
Modulation: QAM256

--------------------------------------------------------------------------------
Upstream
Freq/Power: 30.400 MHz 47 dBmV
Channel Type: DOCSIS 2.0 (ATDMA)

Symbol Rate: 5120 kSym/sec

Modulation: QAM32

DOCSIS 2?

and an ARRIS speed test:

Last Result:
Download Speed: 29875 kbps (3734.4 KB/sec transfer rate)
Upload Speed: 1606 kbps (200.8 KB/sec transfer rate)
Latency: 25 ms

Sticking with the Moto - still!
--
Think outside the Fox... Opera
Gravy_Dave

join:2006-02-21
Sacramento, CA

Re: [Speed] Higher upload PowerBoost?

This is about as good as it gets here in Central Cal. (Sacramento)


anon123

@comcast.net

Click for full size
Yep, your upstream is using a DOCSIS 2.0 modulation.

32QAM @ a 6.4MHz channel width = ~25mb/s of bandwidth per channel.
hussle87
Premium
join:2008-01-06
Sykesville, MD
yeah I got this wierd upload test and I'm only on 6/1 tier usually I get 15
I can't get the print screen to work but it's showing 21 down / 3.2 up.

dadkins
Can you do Blu?
Premium,MVM
join:2003-09-26
Hercules, CA
·Comcast

Re: [Speed] Higher upload PowerBoost?

said by hussle87 See Profile :

yeah I got this wierd upload test and I'm only on 6/1 tier usually I get 15
I can't get the print screen to work but it's showing 21 down / 3.2 up.
3.2 was normal here for upload PowerBoost - mine is now at 6mbps.
--
Think outside the Fox... Opera
hussle87
Premium
join:2008-01-06
Sykesville, MD

Re: [Speed] Higher upload PowerBoost?

yeah but what tier are you on?

dadkins
Can you do Blu?
Premium,MVM
join:2003-09-26
Hercules, CA
·Comcast


1 edit

Re: [Speed] Higher upload PowerBoost?

said by hussle87 See Profile :

yeah but what tier are you on?
Blast - 16/2.
Actual sustained speeds(*AFTER* PowerBoost) here are 17.3mbps down and 2.2mbps up.
--
Think outside the Fox... Opera
hussle87
Premium
join:2008-01-06
Sykesville, MD

Re: [Speed] Higher upload PowerBoost?

yeah I'm only on the 6/1 tier and I have done a lot of speedtests and only seen 2.5 up usually.

dadkins
Can you do Blu?
Premium,MVM
join:2003-09-26
Hercules, CA

Re: [Speed] Higher upload PowerBoost?

Hmmm... maybe they hooked you up too!

sortofageek
Premium,Mod
join:2001-08-19
Valhalla Dr
clubs:

(topic move) Are my modem signals ok?

Moderator Action
The post that was here (and all 4 followups to it), has been moved to a new topic .. »Are my modem signals ok?

Cheese
Premium
join:2003-10-26
Naples, FL
clubs:

mustang46

join:2005-05-06
Roseville, MI


1 edit

Re: [Speed] Higher upload PowerBoost?

said by Cheese See Profile :


Whew , that download looks like someone cut the cheese...

EG
The wings of love
Premium
join:2006-11-18
Union, NJ
No change here in Central N.J. daddio
--
Let us never forget 9/11.....

swhitney2003
I can't drive 55.
Premium
join:2003-06-13
NH
clubs:
·Skype
·Verizon Wireless B..
·Comcast

Channel IDs 0 and 1... so that must mean I'm far from oversubscribed?

--------------

Acquire Downstream Channel 693000000 Hz Locked
Connectivity State Operational Operational
Boot State OK Operational
Security Enabled BPI+


Downstream Channel


Lock Status Operational
Modulation 256QAM
Channel ID 0
Provisioned Rate 8800 kbps
Symbol Rate 5360.537 Ksym/sec
Downstream Power -6.9 dBmV
SNR 38.6 dB


Upstream Channel


Lock Status Operational
Modulation 16QAM
Channel ID 1
Provisioned Rate 2200 kbps
Symbol Rate 2560 Ksym/sec
Upstream Power 47.0 dBmV

tenpin784
I Went To The Dark Side?

join:2001-03-30
New Durham, NH

Re: [Speed] Higher upload PowerBoost?

Not quite....just means your on upstream 0 on the blade, thats all.

Channel ID of 11 is high.

EG
The wings of love
Premium
join:2006-11-18
Union, NJ

Re: [Speed] Higher upload PowerBoost?

said by tenpin784 See Profile :

Not quite....just means your on upstream 0 on the blade, thats all.
One could misconstrue this as a contradiction.
--
Let us never forget 9/11.....

tshirt
Premium,MVM
join:2004-07-11
Snohomish, WA
·Comcast


2 edits

Re: [Speed] Higher upload PowerBoost?

binary 0, you must be old enough to have gone to a school where the taught you to count 1-10, rather than 0-9.

just like me

jkj860
The Final Frontier

join:2002-01-10
Valparaiso, IN
·Comcast
·Comcast Digital Vo..

said by dadkins See Profile :

Anyone notice that their upload PowerBoost has more or less doubled?

I used to get 3-3.5mbps for upload PowerBoost.

This morning... 5-6mbps

Last Result:
Download Speed: 26736 kbps (3342 KB/sec transfer rate)
Upload Speed: 6291 kbps (786.4 KB/sec transfer rate)
Latency: 24 ms



Have to see when uploading actual files... I'll post a screenie in a few
Congrats on your new found speed! I want to be like you when I grow up.
--
I know you think you understand what you thought I said, but I am not sure you realize what you heard is not what I meant. Nixon

dadkins
Can you do Blu?
Premium,MVM
join:2003-09-26
Hercules, CA
·Comcast

Re: [Speed] Higher upload PowerBoost?

said by jkj860 See Profile :

Congrats on your new found speed! I want to be like you when I grow up.
No, ya don't.

Thanks though!
--
Think outside the Fox... Opera

MysticGogeta
The Robot Devil
Premium
join:2005-03-14
League City, TX
clubs:
I don't even get power boost. Please stop making me sad

Bluegrassman

join:2008-05-29
Paducah, KY
No change here Dadkins.

lilhurricane
Crunchin' For Cures
Premium,Mod
join:2003-01-11
Purple Zone
clubs:
·Comcast

Host:
TV over IP
Software
RCN
Inside Insight
Team Discovery
Have I mentioned I miss Broadstar (Connexions)?



Jersey never works


--
~Safe Hex~ Team Discovery ~ Project Hope ~ Like A Hurricane~

Cjaiceman
Premium,MVM
join:2004-10-12
Parker, CO
Nope, nothing new here, still the same 32/3 powerboost then back to 17.2/2.2

simkiss

join:2004-11-07
Downingtown, PA
I pay for 16/2.

This is what I consistently get with Comcast (in Verizon FiOS zone)...

jmn1207
Premium
join:2000-07-19
Reston, VA
·Verizon FIOS


1 edit
Hate to dig up an old post, but at least I searched before I posted.

Rob See Profile suggested that this testing would be done by Sept. 30th, but in the last couple of days my upload performance appears to have been increased. We are in a FiOS zone, so hopefully DOCSIS 3.0 testing is being done in the Northern Virginia area.



Here is a full 64MB upload showing fairly decent performance, and with a bit more "speed" than I have ever been able to accomplish before using the same file and test site.


Yeeehaaaa!!!!


These performance tests were done just before 9:00 PM local time.

Edit: Forgot to mention that my modem bootfile is still the same, d11_m_sb5120_speedtierextreme2_c01.cm.

See 17 replies to this post

dadkins
Can you do Blu?
Premium,MVM
join:2003-09-26
Hercules, CA
·Comcast

Straight from the ARRIS

RF Parameters
Downstream
Freq/Power: 705.000 MHz -8 dBmV
Signal to Noise Ratio: 36 dB
Modulation: QAM256

--------------------------------------------------------------------------------
Upstream
Freq/Power: 30.400 MHz 49 dBmV
Channel Type: DOCSIS 2.0 (ATDMA)

Symbol Rate: 5120 kSym/sec

Modulation: QAM64

Just for reference.
--
Think outside the Fox... Opera

jmn1207
Premium
join:2000-07-19
Reston, VA
·Verizon FIOS

Well I'm doing 10 things at once and watching baseball and football, but I could not find anything definitive on whether or not I have DOCSIS 2.0 in a quick and dirty search.

These are the only stats my modem will provide.


SB5120 Upstream Stats


Is it possible to determine without the QAM info?

Johkal
Cool Cat
Premium,MVM
join:2002-11-13
Happy Valley
clubs:

Re: [Speed] Higher upload PowerBoost?

If you are a former Adelphia acquired customer, you have always been 2.0.

jmn1207
Premium
join:2000-07-19
Reston, VA
·Verizon FIOS

Re: [Speed] Higher upload PowerBoost?

said by Johkal See Profile :

If you are a former Adelphia acquired customer, you have always been 2.0.
Nope, just Comcast for this location. I used to have Adelphia before I moved here.

Johkal
Cool Cat
Premium,MVM
join:2002-11-13
Happy Valley
clubs:

Re: [Speed] Higher upload PowerBoost?

I hadn't realized you moved. Where were you before?

jmn1207
Premium
join:2000-07-19
Reston, VA
·Verizon FIOS

Re: [Speed] Higher upload PowerBoost?

said by Johkal See Profile :

I hadn't realized you moved. Where were you before?
I was in an apartment at Broadlands in Ashburn. Moved into a house in Reston. Only a 15 mile move, but it was from a very new area to a more established neighborhood. This house was built in 1964 and all of the wiring in the area is above ground, while Ashburn's was almost exclusively buried and relatively new.

RR Conductor
RailRoadDude
Premium
join:2002-04-02
Redwood Valley, CA
·Comcast

said by Johkal See Profile :

If you are a former Adelphia acquired customer, you have always been 2.0.
That means we're 2.0 here in Mendocino County, woo hoo!

mike12806
Premium
join:2007-08-28
Milton, MA
So all that it requires to be upgraded from D 1.1 to 2.0 is a CMTS upgrade? Is Docsis 2.0 neccesary to see the supposed new 22/5 tier, or can that be achieved on D 1.1?

K3

join:2008-05-06
Kankakee, IL
·Comcast

Finally some success, called Comcast again, talked to a really nice lady who said our Arris402P is the reason we are having problems with our speed. She continued to say that particular modem is for the slower comcast tiers and she is sending out a tech tomorrow with an ArrisTM602G. I hope that fixes our problem with us not getting powerboost.

dadkins
Can you do Blu?
Premium,MVM
join:2003-09-26
Hercules, CA
·Comcast

Re: [Speed] Higher upload PowerBoost?

I have the TM502G, only one phone rep was kind enough to tell me that it was problematic with Blast, and she was amazed that 8mbps worked on it.

Hope the 602 fixes it for you!
--
Think outside the Fox... Opera

K3

join:2008-05-06
Kankakee, IL
·Comcast


4 edits

Re: [Speed] Higher upload PowerBoost?

I have been testing way higher than normal on the upload side starting today, I never really get a good result on this site for download though. And this is with the Arris TM502G that was just replaced for me the other day. And yes it is only powerboost, lasts for about 20 seconds then back to 2.2Mb/s






dadkins
Can you do Blu?
Premium,MVM
join:2003-09-26
Hercules, CA
·Comcast


1 edit

Re: [Speed] Higher upload PowerBoost?

Cool!
Many of us do not see decent(comparable) upload speeds as we get with separate HSI modems.

EDIT: Nope. ARRIS is still choking and ouking here:
Last Result:
Download Speed: 24902 kbps (3112.8 KB/sec transfer rate)
Upload Speed: 2307 kbps (288.4 KB/sec transfer rate)
Latency: 30 ms

Even after a reset...
--
Think outside the Fox... Opera

trent25

join:2005-11-28
Philadelphia, PA


Upload powerboost finally works on Arris Emta!
said by K3 See Profile :

I have been testing way higher than normal on the upload side starting today, I never really get a good result on this site for download though. And this is with the Arris TM502G that was just replaced for me the other day. And yes it is only powerboost, lasts for about 20 seconds then back to 2.2Mb/s
After reading your post I tested my TM502G @ speakeasy, same result as before 2.2mbps no powerboost. (My real life speeds are actually below 2mbps).

But since I had noticed earlier this month that the modem's HW/FW page went from DOCSIS 1.1 to 2.0 for the reported system but the modulation remained QAM16 (TDMA) for the upstream, I decided to reset the modem again to check if it would change my modulation ... no change.

BUT when I tested again @ speakeasy 3.3mbps ... Wooohooo

Not trusting speed tests and their inconsistent results, I tried an upload to my online drive (XDrive), and sure enough powerboost phase between 3-3.3mbps and at the end leveled of to a nice stable 2mbps (attached graphic). In the past I used to only get 1.8mbps with XDrive and no powerboost.

I wonder if I would be seeing the 6mbps upload boosts others are seeing if I had something other than the Arris Emta!

K3

join:2008-05-06
Kankakee, IL
·Comcast


4 edits

Re: [Speed] Higher upload PowerBoost?

It will work with the Arris Emta if they have upgraded your area. Another thing the tech did when he replaced my modem was replace my aerial drop. The original drop was from the cablevision days, I would say 1998 was when they put the line in originally. They replaced it with this supercable, lol. It is, I would say 3 times thicker than the coax going into my modem. I have never seen a cable like this so maybe this is another reason for my faster speeds.


pokesph
It Is Almost Fast
Premium
join:2001-06-25
Sacramento, CA
clubs:
Over here in Arnieland, its still the same ole same ole..

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