Topic 'Finally got around to checking my signal levels...' in forum 'Comcast HSI' - dslreports.com http://www.dslreports.com/forum/Finally-got-around-to-checking-my-signal-levels-21024442 en Fri, 10 Feb 2012 13:46:34 EDT Fri, 10 Feb 2012 13:46:34 EDT Re: Finally got around to checking my signal levels... http://www.dslreports.com/forum/Re-Finally-got-around-to-checking-my-signal-levels-21030909
»www.cablemodem.com/primer/

* DOCSIS 1.0 provides basic broadband Internet connectivity for one or more devices in the home. Among other things, it includes the ability to rate-limit (cap) a particular customer's data rate to a cable operator selected value.
* DOCSIS 1.1 provides improved operational flexibility, security, and quality-of-service (QoS) features.
* DOCSIS 2.0 includes increased upstream reliability and throughput for symmetric services.
* DOCSIS 3.0 provides a number of enhancements, most notably, channel bonding, support for IPv6,and support for IPTV. Channel bonding provides cable operators with a flexible way to significantly increase downstream speeds to a minimum of 160 Mbps, and upstream throughput up to a minimum rate of 120 Mbps to customers.

Benefits

* DOCSIS 1.0 cable modems made the interoperability of cable technology a reality for cable operators and cable subscribers.
* DOCSIS 1.0 made the standardization of cable modems possible. As a result, placed downward pressure on cable modem prices causing them to drop from $500 to $50.
* DOCSIS 1.1 enables the cable operator to configure guarantees on the data rates and/or the latency of the service.
* DOCSIS 2.0 increases upstream throughput to 30 Mbps of capability.
* DOCSIS 3.0 will allows cable operators to provide data rates in the hundreds of megabits and potentially gigabits per second.

Services Enabled

* DOCSIS 1.0 provides the cable industry-platform the delivery of high-speed data on cable modems.
* DOCSIS 1.1 paves the way for high-quality digital voice, interactive gaming, and commercial service level agreements (SLAs).
* DOCSIS 2.0 increases upstream throughput resulting in an increase in the capacity to deliver high-speed data.
* DOCSIS 3.0 will enables direct competition with VDSL and FTTx service offerings from the telcos, and will provides a platform for the evolution of the cable video business into IPTV.]]> http://www.dslreports.com/forum/Re-Finally-got-around-to-checking-my-signal-levels-21030909 Sat, 30 Aug 2008 09:37:01 EDT Re: Finally got around to checking my signal levels... http://www.dslreports.com/forum/Re-Finally-got-around-to-checking-my-signal-levels-21029373 said by EG:

said by gar187er:

comcast doesnt run docsis 2.0
I believe that they are using 2.0 and 3.0 in tandem for subs in areas that have the 50/5 service available.

2.0 being used for the upstream.According to the business line page, the 50 down tier is 'coming soon' to my area.

I don't know pricing at this time, but wow, it's tempting.

Realistically, I doubt that I would upgrade to it. After all, no one in the house is a big downloader and from what I've seen from work on the fat pipe (I've pulled just over a gig a second before), there are not many sites out there that can saturate a pipe that big.

But for geek cred, it's immeasurable. :D
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All hardware sucks, all software sucks, some just suck more than others]]> http://www.dslreports.com/forum/Re-Finally-got-around-to-checking-my-signal-levels-21029373 Fri, 29 Aug 2008 21:53:21 EDT Re: Finally got around to checking my signal levels... http://www.dslreports.com/forum/Re-Finally-got-around-to-checking-my-signal-levels-21029321 said by EG:

If the figure is accurate, that is an SNR TO DIE FOR !!So I take it there is a chance that the modem is fibbing to me? :)

That is a straight cut and paste from the status page of the SMC.
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All hardware sucks, all software sucks, some just suck more than others]]> http://www.dslreports.com/forum/Re-Finally-got-around-to-checking-my-signal-levels-21029321 Fri, 29 Aug 2008 21:48:05 EDT Re: Finally got around to checking my signal levels... http://www.dslreports.com/forum/Re-Finally-got-around-to-checking-my-signal-levels-21029115 said by gar187er:

comcast doesnt run docsis 2.0
I believe that they are using 2.0 and 3.0 in tandem for subs in areas that have the 50/5 service available.

2.0 being used for the upstream.]]> http://www.dslreports.com/forum/Re-Finally-got-around-to-checking-my-signal-levels-21029115 Fri, 29 Aug 2008 21:19:10 EDT Re: Finally got around to checking my signal levels... http://www.dslreports.com/forum/Re-Finally-got-around-to-checking-my-signal-levels-21029083 http://www.dslreports.com/forum/Re-Finally-got-around-to-checking-my-signal-levels-21029083 Fri, 29 Aug 2008 21:15:22 EDT Re: Finally got around to checking my signal levels... http://www.dslreports.com/forum/Re-Finally-got-around-to-checking-my-signal-levels-21028997
daveinpoway: I apparently do have a stellar connection and I was very pleased when I took a look last night.

gar187er: Ah, I was not aware that they didn't use DOCSIS 2. With all the talk about DOCSIS 3 and if/when/where it's being rolled out, I was under the impression that Comsys was using it.

For those who care regarding my first post (»[Business] Less than stellar install...), I would like to thank Rob for the executive line TFN. I called them and the next day I received a call from my local office, who after listing to my tale of woe, put a credit on my account which didn't get applied to my first bill (it also showed that I was past due for two months of service. Yet another thing that I was never told about by sales) that I received today.

One call back to my contact had that fixed without any further delays.

With all things considered, overall I'm happy with the service and it looks like I'm going to be a Comcast customer for at least the next two years.
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All hardware sucks, all software sucks, some just suck more than others]]> http://www.dslreports.com/forum/Re-Finally-got-around-to-checking-my-signal-levels-21028997 Fri, 29 Aug 2008 21:03:29 EDT Re: Finally got around to checking my signal levels... http://www.dslreports.com/forum/Re-Finally-got-around-to-checking-my-signal-levels-21027625 said by gar187er:

comcast doesnt run docsis 2.0
They do in ex-Adelphia areas.
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Write me up a 125.......I Can't Drive 55 »redrocker.com/ »cabowabo.com/]]> http://www.dslreports.com/forum/Re-Finally-got-around-to-checking-my-signal-levels-21027625 Fri, 29 Aug 2008 16:39:09 EDT Re: Finally got around to checking my signal levels... http://www.dslreports.com/forum/Re-Finally-got-around-to-checking-my-signal-levels-21025125 http://www.dslreports.com/forum/Re-Finally-got-around-to-checking-my-signal-levels-21025125 Fri, 29 Aug 2008 09:30:15 EDT Re: Finally got around to checking my signal levels... http://www.dslreports.com/forum/Re-Finally-got-around-to-checking-my-signal-levels-21024592 http://www.dslreports.com/forum/Re-Finally-got-around-to-checking-my-signal-levels-21024592 Fri, 29 Aug 2008 06:11:22 EDT Finally got around to checking my signal levels... http://www.dslreports.com/forum/Finally-got-around-to-checking-my-signal-levels-21024442 Downstream Frequency 567000000 Hz
Lock Status Locked
Modulation 256 QAM
Symbol Rate 5.360537 Msym/sec
Downstream Power 5.2 dBmV
SNR 43.585 dB

Upstream Channel
Upstream Frequency 25008000 Hz
Lock Status Locked
Modulation 16QAM
Symbol Rate 2560000 sym/sec
Upstream Power 39.7 dBmV
Channel ID 2

As far as I can tell from the FAQ, these values are good. The only thing that makes me wonder is that the upstream appears to be DOCSIS 1.1.

Shouldn't a new business install (less than a month old) be using 2.0?

Mod Note: Apparently continued from here ---> »[Business] Less than stellar install...

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All hardware sucks, all software sucks, some just suck more than others]]> http://www.dslreports.com/forum/Finally-got-around-to-checking-my-signal-levels-21024442 Fri, 29 Aug 2008 03:35:37 EDT