dslreports logo
 
    All Forums Hot Topics Gallery
spc
Search similar:


uniqs
3534

pclover
join:2008-08-02
Santa Cruz, CA

pclover

Member

16-QAM to 64-QAM Sign of DOCSIS 3? Santa Cruz,CA Area.

My internet went out for about 15 minutes. I check on the Modem status page and I've moved from 16-QAM to 64-QAM for the upstream.

RR Conductor
Ridin' the rails
Premium Member
join:2002-04-02
Redwood Valley, CA

RR Conductor

Premium Member

We have 16 QAM on one upload channel and 64 QAM on the other here in Mendocino County. Do you guys have multiple upload channels yet down there?

pclover
join:2008-08-02
Santa Cruz, CA

pclover

Member

Not sure. netcool form PM told me that 2 channel bonding was coming to this area today.

I need to get get a Docsis 3 eMTA to confirm. I just had a hour pointless chat with comcast live chat. Need to wait form them to open.

RR Conductor
Ridin' the rails
Premium Member
join:2002-04-02
Redwood Valley, CA
ARRIS SB6183
Netgear R7000

RR Conductor

Premium Member

said by pclover:

Not sure. netcool form PM told me that 2 channel bonding was coming to this area today.

I need to get get a Docsis 3 eMTA to confirm. I just had a hour pointless chat with comcast live chat. Need to wait form them to open.

I've done that a few times, I think the online reps read off a script, from somewhere in India.

pclover
join:2008-08-02
Santa Cruz, CA

pclover

Member

Maybe. I had a talk with a supervisor that said I would be changed to have my eMTA replaced because a tech must visit to replace a eMTA.

I then had a 40 minute fight with them saying my modem is not Docsis 3 and they kept telling me it is.

This speed test is with a DOCSIS 2 Modem


gar187er
I DID this for a living
join:2006-06-24
Seattle, WA

gar187er to pclover

Member

to pclover
its not a definate sign....64qam return has been VERY common for well over 5 years now.....most places run both 64 and 16 so for all a normal person knows you could have had both, but your modem was just defaulting to the 16....

pclover
join:2008-08-02
Santa Cruz, CA

pclover

Member

Click for full size
Alright I'm on DOCSIS 3 now with two downstream channels.

RR Conductor
Ridin' the rails
Premium Member
join:2002-04-02
Redwood Valley, CA

RR Conductor

Premium Member

Congrats! We only have 2 on the upstream here in the Ukiah area, but 8 on the downstream.

pclover
join:2008-08-02
Santa Cruz, CA

pclover

Member

It's about time.

netcool said 4 Downstream channels will come in time. They have some upgrades in this area or will have to move some stuff off he said. I believe we are still on a 625 MHz system.

I feared Arris form previous experiences but the TM722G Proved me wrong! Great eMTA!

RR Conductor
Ridin' the rails
Premium Member
join:2002-04-02
Redwood Valley, CA

RR Conductor

Premium Member

All my download channels are on 550 to 590 Mhz, the upload channels are 306 and 253.
RR Conductor

RR Conductor to pclover

Premium Member

to pclover
Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables
1 Locked QAM256 8 597000000 Hz -0.4 dBmV 40.9 dBmV 1865 224
2 Locked QAM256 1 549000000 Hz -0.3 dBmV 40.8 dBmV 2469 1780
3 Locked QAM256 2 555000000 Hz 1.0 dBmV 41.4 dBmV 4205 2942
4 Locked QAM256 3 567000000 Hz 2.9 dBmV 41.9 dBmV 17142 6919
5 Locked QAM256 4 573000000 Hz 2.2 dBmV 41.9 dBmV 21684 8757
6 Locked QAM256 5 579000000 Hz 1.2 dBmV 41.7 dBmV 6708 1616
7 Locked QAM256 6 585000000 Hz 0.5 dBmV 41.3 dBmV 1643 224
8 Locked QAM256 7 591000000 Hz -0.1 dBmV 41.2 dBmV 1565 36

Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 2 5120 Ksym/sec 30600000 Hz 37.5 dBmV
2 Locked TDMA 1 2560 Ksym/sec 25300000 Hz 37.5 dBmV
3 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
4 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV

pclover
join:2008-08-02
Santa Cruz, CA

pclover to RR Conductor

Member

to RR Conductor
I think you mean 30.60 and 25.30 Mhz

I wish my 40 Mbps upload burst was permanent but it isn't

flwpwr
@comcast.net

flwpwr to pclover

Anon

to pclover
64 qam upstream is technically only proof off D2 upgrade which my area did first about 3 months before a D3 implementation was done. You are moving to D3, but I would not get too excited just yet, equipment setup, tests, and learning curves are ahead for the maintenance team.

telcodad
MVM
join:2011-09-16
Lincroft, NJ

1 recommendation

telcodad

MVM

Yes, just a single 64QAM upstream channel would only prove "at least D2."

In pclover's case, his ARRIS modem is showing both multiple, bonded, downstream 256QAM and upstream 64QAM channels which, AFAIK, definitely indicates DOCSIS 3.0.
itisme17604
join:2008-08-19
San Leandro, CA

itisme17604 to pclover

Member

to pclover
I'm in Santa Cruz area, near UCSC campus and am still on DOCSIS 2 CMTS. I have 2 channel downstream bonding, 1 up, 2 down is 256QAM, 1 up is 64QAM. I'm on the 25 down tier but I can't receive that speed even with a D3 Modem. Internet is highly congested during peak hours at the evening that I get only 1 down 1 up.

pclover
join:2008-08-02
Santa Cruz, CA

1 edit

pclover

Member

I'm having congestion issues during peak hours as well. I am a Arris C4 CMTS Tho. The tech said that I should be getting more downstream channels soon. Not sure about you.

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

EG to itisme17604

Premium Member

to itisme17604
said by itisme17604:

I'm in Santa Cruz area, near UCSC campus and am still on DOCSIS 2 CMTS. I have 2 channel downstream bonding,

FWIW, if you have two bonded downstreams then it has to be a DOCSIS 3 compliant CMTS.

SHoTTa35
@optonline.net

SHoTTa35 to itisme17604

Anon

to itisme17604
said by itisme17604:

I'm in Santa Cruz area, near UCSC campus and am still on DOCSIS 2 CMTS. I have 2 channel downstream bonding, 1 up, 2 down is 256QAM, 1 up is 64QAM. I'm on the 25 down tier but I can't receive that speed even with a D3 Modem. Internet is highly congested during peak hours at the evening that I get only 1 down 1 up.

A CMTS in D2 mode can't bond any channels so you are definitely on D3. They might not have given you the option for faster speeds to upgrade to but the system is D3 regardless.
itisme17604
join:2008-08-19
San Leandro, CA

itisme17604

Member

Weird. Comcaststeve told me the reason why I am not getting my max speeds is because my CMTS is D2. My CMTS is a Cisco, not sure what that exactly means.

pclover
join:2008-08-02
Santa Cruz, CA

pclover

Member

said by itisme17604:

Weird. Comcaststeve told me the reason why I am not getting my max speeds is because my CMTS is D2. My CMTS is a Cisco, not sure what that exactly means.

PM netcool »netcool with your modem mac address and he will tell you what CMTS your on.

A local tech told me that Santa Cruz is going to be upgraded to 5 downstream channels hopefully soon to resolve the congestion issues. He said it's possible at the end of this moth or beginning of next month. BTW are your channels on 579 and 585 MHz for your downstream channels?

redbeard916
join:2011-02-23
Folsom, CA

redbeard916

Member

im on docsis 3 and my downstream channels are in the low 515000000 to 530000000 range... sooo

pclover
join:2008-08-02
Santa Cruz, CA

pclover

Member

Click for full size
Interesting mine are at 579 and 585 Mhz I also have 3 upstream channels.

RR Conductor
Ridin' the rails
Premium Member
join:2002-04-02
Redwood Valley, CA
ARRIS SB6183
Netgear R7000

RR Conductor to redbeard916

Premium Member

to redbeard916
My 8 downstream channels up here in Redwood Valley (Ukiah CMTS) are in the 557-597 range. The two upstream channels are at 253 and 306.

Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables
1 Locked QAM256 8 597000000 Hz 0.8 dBmV 41.1 dBmV 0 0
2 Locked QAM256 1 549000000 Hz 0.0 dBmV 40.8 dBmV 19 114
3 Locked QAM256 2 555000000 Hz 0.7 dBmV 40.8 dBmV 35 120
4 Locked QAM256 3 567000000 Hz 1.4 dBmV 41.3 dBmV 17 0
5 Locked QAM256 4 573000000 Hz 1.4 dBmV 41.2 dBmV 26 0
6 Locked QAM256 5 579000000 Hz 1.2 dBmV 41.3 dBmV 13 19
7 Locked QAM256 6 585000000 Hz 1.3 dBmV 40.9 dBmV 28 0
8 Locked QAM256 7 591000000 Hz 1.1 dBmV 40.9 dBmV 12 0

Total Correctables Total Uncorrectables
150 253

Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 2 5120 Ksym/sec 30600000 Hz 38.3 dBmV
2 Locked TDMA 1 2560 Ksym/sec 25300000 Hz 38.3 dBmV
3 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
4 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV

gar187er
I DID this for a living
join:2006-06-24
Seattle, WA

gar187er

Member

25.3 and 30.6 dont want to confuse anyone.

tshirt
Premium Member
join:2004-07-11
Snohomish, WA

1 edit

tshirt to itisme17604

Premium Member

to itisme17604
CMTS=the head end at comcast for your area
cisco= a large, network equipment company

A couple of the somewhat isolated areas along the CA coast still have older, non D3 equipment, even the cisco D3 CMTS in other areas is not yet IPv6 compliant, but Comcast is working with to reach IPv6 useability.
If they can't reach that standard within a few months ComCast will likely replace cisco CMTS with another vendors equipment.
either way, your area will likely have upgrades before the end of the year.

RR Conductor
Ridin' the rails
Premium Member
join:2002-04-02
Redwood Valley, CA
ARRIS SB6183
Netgear R7000

RR Conductor to gar187er

Premium Member

to gar187er
said by gar187er:

25.3 and 30.6 I dont want to confuse anyone.

Fixed

It's strange Santa Cruz county is so behind compared to Mendocino County, we are further from SF, much larger in size (3800 Sq.Miles to their 607) and we have a lot less population (86,000 to their 262,000), but hey, I'm not complaining

pclover
join:2008-08-02
Santa Cruz, CA

pclover to redbeard916

Member

to redbeard916
I just emailed the local tech. If he has anything new to say I will post it here.

I also mentioned to him about the congestion issue. Hopefully that will be speed it up but probably wont.
pclover

pclover to RR Conductor

Member

to RR Conductor
said by RR Conductor:

said by gar187er:

25.3 and 30.6 I dont want to confuse anyone.

Fixed

It's strange Santa Cruz county is so behind compared to Mendocino County, we are further from SF, much larger and we have a lot less population (86,000 to their 262,000), but hey, I'm not complaining

As far I'm aware Santa Cruz is a 625 MHz cable system. Los Gatos not to far away is 1 GHz

RR Conductor
Ridin' the rails
Premium Member
join:2002-04-02
Redwood Valley, CA
ARRIS SB6183
Netgear R7000

RR Conductor

Premium Member

said by pclover:

said by RR Conductor:

said by gar187er:

25.3 and 30.6 I dont want to confuse anyone.

Fixed

It's strange Santa Cruz county is so behind compared to Mendocino County, we are further from SF, much larger and we have a lot less population (86,000 to their 262,000), but hey, I'm not complaining

As far I'm aware Santa Cruz is a 625 MHz cable system. Los Gatos not to far away is 1 GHz

I meant as far as IPv6 and D3 goes, they seem to be behind in your area.

pclover
join:2008-08-02
Santa Cruz, CA

pclover

Member

I have IPv6