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<title>Comcast HSI forum - dslreports.com community</title>
<link>http://www.dslreports.com/forum/comcast</link>
<description>Comcast HSI forum current topics</description>
<language>en</language>
<copyright>Copyright 2007, dslreports.com</copyright>
<pubDate>Sun, 22 Nov 2009 18:51:18 EDT</pubDate>
<lastBuildDate>Sun, 22 Nov 2009 18:51:18 EDT</lastBuildDate>

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<item>
<title>Advice on coax upgrade</title>
<link>http://www.dslreports.com/forum/remark,23378620</link>
<description><![CDATA[I posted this is direct forum, but I was wondering what input anyone would have here.  

I will be assisting my neighbor with upgrading his house coax to RG6. He currently has 6 tv's in the house, not all running at the same time, but does have all wired in via some bad cons w/ splitters. He does not have any digital boxes, DVR's, or cable modem. I did advise him he will be needing to get the 2 free DTA's here soon as I got the letter in the mail regarding the digital migration taking place here shortly & also he should have 1 digital box on the main TV upstairs. This is why he's asked for my help, he wants to be "up to code" per say. My plan, since pathways in basement are clear was to home run each tap to the side of the house where the service con now is.

Anyway, my general question is w/ 6 tv locations in the setup what would be the best connection method on the incoming side if I do homerun to 1 central location. I do believe an amp would be necessary, but as that's what I'm not familiar w/ & I'd like some advice. I have Comcast issued 4 way & 3 way splitter to use for this job,

I'm in commuications so I'm familiar w/ connections, etc, so running this is not a problem.

Much Thx!! ]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23378620</guid>
<pubDate>2009-11-22 11:09:06</pubDate>
</item>

<item>
<title>[Connectivity] south jersey connectivity issues</title>
<link>http://www.dslreports.com/forum/remark,23377402</link>
<description><![CDATA[I have used comcast internet since it was available probably 10 years ago, never had any issues until the past month or so.  There was no changes made on my end....their solution was to come down and replace the modem so I went from the old motorola SB surfboard I think it was called to a scientific atlanta little black modem.  I have Comcast BLAST and when speedtesting from a PC plugged in from the modem you get 20/5 consistenly.  From my wireless laptop through an old linksys b/g mixed router I get 13/5...the real issue is the cable keeps going in and out all the time and its really really annoying.  I logged into my modem at htt[://192.168.100.1 and I have some #s for you guys to review:

Name
&#9; WebSTAR DPC2100R2

Modem Serial Number
&#9; 222761736

Cable Modem MAC Address
&#9; 00:25:2e:21:8d:f8

Hardware Version
&#9; 2.1

Software Version
&#9; v2.0.2r1256-081120

Receive Power Level
&#9; 1.9 dBmV

Transmit Power Level
&#9; 61.0 dBmV

Cable Modem Status
&#9; Operational

After reviewing the FAQ on here about the levels and what is recommended...I am pretty sure my 1.9 dBmV is AWFUL!  On a sidenote when I had comcast digital cable TV they said they installed some "booster" to better the signal from the pole to the home since it was 2 accounts within 1 home and 5 or 6 cable boxes...I want them to remove that dumb thing and have them come in clean.  I ordered ULTRA which is 30Mbps connection and they are coming tomorrow to install a D3 modem to get that connection running and I will have him check everything.  Any ideas on wtf is causing this?  After this is cleared up I am going to get the best wireless-N router I can find to improve the connectivity.....  It is a big house with 2 gamers and bandwidth is crucial.

Please let me know your thoughts! 

this was just takin from this laptop upstairs from the router with comcast blast..

  ]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23377402</guid>
<pubDate>2009-11-21 23:28:04</pubDate>
</item>

<item>
<title>[Connectivity] Service/connection problems in Monroe, MI</title>
<link>http://www.dslreports.com/forum/remark,23362836</link>
<description><![CDATA[Hey everyone! Just wanted to know if anyone else was having issues with their Comcast HSI in or around Southeast Michigan. The last week or so I've been having a ton of problems with my Comcast service. 

The connection will either usually go very slow, unresponsive or just stop working altogether. It happens erratically and at random times during the day. I'll notice devices on the network (wireless/wired) will display errors saying they've lost connectivity and to check my internet service (router/modem). The lights on the modem appear to be normal, but the service just dies.

Downstream
 &#9;Freq/Power: &#9;589.750 MHz &#9;1 dBmV &#9; 
 &#9;Signal to Noise Ratio:  &#9;35 dB &#9; 
 &#9;Modulation:&#9;QAM256&#9; 
Upstream
 &#9;Freq/Power:&#9;21.000 MHz &#9;37 dBmV &#9; 
  &#9;Channel Type: &#9;DOCSIS 2.0 (ATDMA)&#9; 
  &#9;Symbol Rate: &#9;5120 kSym/sec&#9; 
  &#9;Modulation: &#9;QAM16 &#9; 

 Status
System Uptime: &#9;2 days 10h:53m:43s
Computers Detected:&#9;1
CM Status:&#9;Telephony-AC Power Iso OFF Reg Complete
WAN Isolation:&#9;OFF-Access to WAN is allowed
Time and Date:&#9;WED NOV 18 23:38:49 2009 

Date Time  &#9;Event ID  &#9;Event Level  &#9;Description
6/18/2009 0:21 &#9;17000400 &#9;3 &#9;SYNC Timing Synchronization failure - Failed to receive MAC SYNC frame within time-out period
6/18/2009 0:21 &#9;17000100 &#9;3 &#9;SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
6/18/2009 0:22 &#9;20000200 &#9;3 &#9;No Ranging Response received - T3 time-out
6/18/2009 0:26 &#9;20000400 &#9;3 &#9;Received Response to Broadcast Maintenance Request, but no Unicast Maintenance opportunities received - T4 timeout
6/18/2009 0:34 &#9;20000200 &#9;3 &#9;No Ranging Response received - T3 time-out
6/18/2009 0:34 &#9;20000300 &#9;3 &#9;Ranging Request Retries exhausted
6/18/2009 0:45 &#9;20000200 &#9;3 &#9;No Ranging Response received - T3 time-out
6/18/2009 0:45 &#9;20000300 &#9;3 &#9;Ranging Request Retries exhausted
6/18/2009 0:45 &#9;20000200 &#9;3 &#9;No Ranging Response received - T3 time-out
6/18/2009 0:46 &#9;20000400 &#9;3 &#9;Received Response to Broadcast Maintenance Request, but no Unicast Maintenance opportunities received - T4 timeout
8/19/2009 23:50 &#9;20000200 &#9;3 &#9;No Ranging Response received - T3 time-out
***** &#9;20000400 &#9;3 &#9;Received Response to Broadcast Maintenance Request, but no Unicast Maintenance opportunities received - T4 timeout
10/18/2009 1:10 &#9;20000200 &#9;3 &#9;No Ranging Response received - T3 time-out
10/19/2009 5:02 &#9;20000400 &#9;3 &#9;Received Response to Broadcast Maintenance Request, but no Unicast Maintenance opportunities received - T4 timeout
10/19/2009 5:02 &#9;17000100 &#9;3 &#9;SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
10/19/2009 5:03 &#9;20000200 &#9;3 &#9;No Ranging Response received - T3 time-out
10/20/2009 0:16 &#9;20000400 &#9;3 &#9;Received Response to Broadcast Maintenance Request, but no Unicast Maintenance opportunities received - T4 timeout
10/20/2009 0:16 &#9;20000200 &#9;3 &#9;No Ranging Response received - T3 time-out
10/21/2009 0:40 &#9;20000400 &#9;3 &#9;Received Response to Broadcast Maintenance Request, but no Unicast Maintenance opportunities received - T4 timeout
11/15/2009 1:31 &#9;20000200 &#9;3 &#9;No Ranging Response received - T3 time-out

The only way I can seem to fix it is by unplugging the modem and router, waiting 10-30 seconds and then plugging them back in. The connection goes right back to working correctly after this until the erratic connectivity loss behavior comes back. In which, I will have to reboot the devices again. Rinse and repeat. After rebooting, it works like normal again until it just happens again.

Up until about a week ago everything was great. Speeds were right on par, connectivity was reliable, and there really wasn't any hiccups. But now things are drastically slower. Videos don't buffer reliably and fluid anymore (the connection just seems to struggle to keep up, even with youtube videos), webpages are generally slow to load, xbox live struggles to load even the dashboard images, and download/upload speeds just plain suck. These issues span across all the devices connected to the network.

 ]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23362836</guid>
<pubDate>2009-11-18 23:50:59</pubDate>
</item>

<item>
<title>[DNS] Domain Helper turned itself back on</title>
<link>http://www.dslreports.com/forum/remark,23377003</link>
<description><![CDATA[I disabled Domain Helper pretty much the first moment I heard about it.  Just now I noticed it had re-enabled itself.  I am currently getting "helped" and my account lists that the Domain Helper is enabled.  

I turned it off again and refreshed my DHCP and it's off again, but why did it turn on in the first place?  And before anyone asks, no I didn't change my modem.

I hope Comcast doesn't periodically enable DNS helper.  :mad:
--
The Comcast Disney Avatar has been retired.]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23377003</guid>
<pubDate>2009-11-21 21:43:58</pubDate>
</item>

<item>
<title>SB6120 Firmware update</title>
<link>http://www.dslreports.com/forum/remark,22706687</link>
<description><![CDATA[After resetting and restarting my modem it downloaded a new version of firmware. 

Model Name: SB6120
Vendor Name: Motorola
Firmware Name: SB6120-1.0.1.8-SCM02-NOSH
Boot Version: PSPU-Boot 1.0.0.4m1
Hardware Version: 1.0
Serial Number: ******************
Firmware Build Time: Apr 22 2009 12:15:22

I can now see these again in the log:

Jul 14 2009 11:01:38 &#9;6-Notice &#9;E112.0 &#9;SW download Successful - Via Config file d11_m_sb6120_bcideluxe_c05.c
Jul 14 2009 10:57:21 &#9;6-Notice &#9;E102.0 &#9;SW Download INIT - Via Config file d11_m_sb6120_bcideluxe_c05.c

Update: After the firmware update my speeds are now 3100/256  :mad: :mad: 

I have an open ticket with Comcast and they hopefully going to resolve it. They escalated it to their Tier3/NOC... *crosses fingers*
--
Duct tape is like The Force &#150; it has a light side and a dark side, and it binds the Universe together]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,22706687</guid>
<pubDate>2009-07-14 14:10:43</pubDate>
</item>

<item>
<title>&#x22;Real&#x22; Bridge mode on SMC 8014/8015 - Comcast SFL</title>
<link>http://www.dslreports.com/forum/remark,23360032</link>
<description><![CDATA[I have been having a hard time getting a straight answer on this topic. Ive done some research and it seems like this may be possible with a custom firmware that is used by cocmast in some cases for a static ip account. I have been attempting to get in contact with Comcast Tier 2 support for a couple days now with no luck, everytime I call and ask for Tier 2 (assuming im not disconnected by the automated system), I sit on hold for 15-20 minutes and then get disconnected anyway. I have had 2 different sales people from cocmast in my area give me a "direct line" allegedly to Tier 2 support but it turns out thats the same phone number on the "getting started" flier and i am soon on hold ultimately to be disconnected while waiting for Tier 2 support to discuss this issue with them.

Does anyone have any more information about the SMC 8014/15 bridge mode? I had heard of disabling NAT somehow and then setting up a static route to simulate the bridge mode...is that possible with the Firmware that Comcast ships the modem with?

Ultimately what im trying to do is get around this alleged issue:

&#147;The 8014 can not be turned into a true bridge where it would pass the public ip to another device&#133;&#148;]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23360032</guid>
<pubDate>2009-11-18 14:26:53</pubDate>
</item>

<item>
<title>[E-mail] Port 25 blocked</title>
<link>http://www.dslreports.com/forum/remark,23379227</link>
<description><![CDATA[I just received the message below from Comcast via email. I'm assuming it's legit. Have many others in this forum also had this issue? I can't understand why they would suddenly take this action. I'm very cautious about my web activity and run the McAfee Security suite offered free to comcast subscribers. I'm also behind a router and run Malwarebytes Anti Malware. Is this pretty much standard practice for Comcast? I've never had this issue before.

 Dear Comcast High-Speed Internet Subscriber:

Action Taken: In an effort to help prevent spam and ensure the security of our network and customers, Comcast has modified your modem&#146;s settings to prevent the sending of email on port 25. That is the default port email programs such as Outlook Express use to send email. We&#146;ve taken this action because we may have detected virus-like activity from your modem or received reports from other email providers that mail from your modem generated complaints from their users. Please read this message to understand how this action may impact your ability to send email and what you should do next.

Comcast Webmail Users
If you use a web browser to access your Comcast.net email, this action will not affect your ability to send or receive e-mail. This action also does not affect any non-Comcast webmail services.

Email Program Users (Outlook Express, Outlook, MacMail, etc.)
If you use an email program, this action will disable your program&#146;s ability to send email until you change your email program settings to send email on port 587. Port 587 uses authentication and is an industry-recommended alternative to port 25. If you use Outlook Express and Comcast.net email, Comcast has provided a simple one click fix for you to use with Internet Explorer. If you use another email program such as MacMail, Eudora, or Thunderbird, please visit our client page for information on how to change the settings for sending email in your email program.

If you are not using Comcast.net email and use another email provider, please contact your provider for its recommended port settings. Most email providers offer an alternative to port 25 for sending email.

All Users

To help protect your security and privacy, it is important to regularly check for and remove any possible viruses from your computer. You can do this using the McAfee Antivirus and Firewall software available from Comcast to subscribers at no additional charge or by using other popular antivirus solutions that are widely available. In addition, Comcast recommends that you secure any wireless network in the home and that the operating systems on your computers be updated regularly with the latest security enhancements. Please visit the Comcast.net security channel for more information and tips on how to enjoy a safe and secure online experience.

If you have additional questions please visit (www.comcast.net/help).

Thank you for choosing Comcast!

Sincerely,
Comcast Customer Security Assurance]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23379227</guid>
<pubDate>2009-11-22 14:32:44</pubDate>
</item>

<item>
<title>[Connectivity] SB5120 reboots since firmware update</title>
<link>http://www.dslreports.com/forum/remark,23208645</link>
<description><![CDATA[Posted this to the direct forum, but wonder if others have had problems...

About a week ago, you pushed a firmware update for the SB5120 modems:
Software Version: SB5120-2.19.0.14-SCM01-NOSH
Hardware Version: 4
MIB Version: II
GUI Version: 1.0
VxWorks Version: 5.4

It used to be: SB5120-2.19.0.12-SCM03-NOSH

Ever since this update, I have had the modem reboot during uploads. My log is filled with this:
2009-10-19 15:21:49&#9;5-Warning&#9;&#9;TSM: TxError WatchDog - Restart Upstream
2009-10-19 15:21:49&#9;5-Warning&#9;&#9;HAL: Overcoming Tx Error (reseting the US - DMA)
2009-10-19 15:14:29&#9;5-Warning&#9;&#9;TSM: TxError WatchDog - Restart Upstream
2009-10-19 15:14:29&#9;5-Warning&#9;&#9;HAL: Overcoming Tx Error (reseting the US - DMA)
2009-10-19 15:14:26&#9;5-Warning&#9;&#9;TSM: TxError WatchDog - Restart Upstream
2009-10-19 15:14:26&#9;5-Warning&#9;&#9;HAL: Overcoming Tx Error (reseting the US - DMA)
2009-10-19 15:14:26&#9;5-Warning&#9;&#9;TSM: TxError WatchDog - Restart Upstream
2009-10-19 15:14:26&#9;5-Warning&#9;&#9;HAL: Overcoming Tx Error (reseting the US - DMA)
2009-10-19 15:13:19&#9;5-Warning&#9;&#9;TSM: TxError WatchDog - Restart Upstream
2009-10-19 15:13:19&#9;5-Warning&#9;&#9;HAL: Overcoming Tx Error (reseting the US - DMA)
2009-10-19 15:13:17&#9;5-Warning&#9;&#9;TSM: TxError WatchDog - Restart Upstream
2009-10-19 15:13:17&#9;5-Warning&#9;&#9;HAL: Overcoming Tx Error (reseting the US - DMA)
2009-10-19 14:38:33&#9;5-Warning&#9;&#9;TSM: TxError WatchDog - Restart Upstream
2009-10-19 14:38:33&#9;5-Warning&#9;&#9;HAL: Overcoming Tx Error (reseting the US - DMA)
2009-10-19 14:38:33&#9;5-Warning&#9;&#9;TSM: TxError WatchDog - Restart Upstream
2009-10-19 14:38:33&#9;5-Warning&#9;&#9;HAL: Overcoming Tx Error (reseting the US - DMA)
2009-10-19 14:37:34&#9;5-Warning&#9;&#9;TSM: TxError WatchDog - Restart Upstream
2009-10-19 14:37:34&#9;5-Warning&#9;&#9;HAL: Overcoming Tx Error (reseting the US - DMA)
2009-10-19 14:37:33&#9;5-Warning&#9;&#9;TSM: TxError WatchDog - Restart Upstream
2009-10-19 14:37:33&#9;5-Warning&#9;&#9;HAL: Overcoming Tx Error (reseting the US - DMA)

I have been getting these for over a year, but since the firmware update, it is MUCH worse.

My signals are good and haven't changed in nearly a year:

Downstream  &#9;Value
Frequency &#9;705000000 Hz 
Signal to Noise Ratio &#9;36 dB 
QAM &#9;QAM256
Network Access Control Object &#9;ON
Power Level &#9;1 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 &#9;Value
Channel ID &#9;3
Frequency &#9;34400000 Hz
Ranging Service ID &#9;4130
Symbol Rate &#9;5.120 Msym/s
Power Level &#9;48 dBmV ]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23208645</guid>
<pubDate>2009-10-19 17:32:24</pubDate>
</item>

<item>
<title>Pauses in connection recently...</title>
<link>http://www.dslreports.com/forum/remark,23378634</link>
<description><![CDATA[I'm not sure the title explains my issues that well but I'll fill everyone in on some history.

I moved in to these apartments about 4 months ago only to find my my connection was resetting a few times a day. It would be working fine, and then something would reset and it would be back up 2 minutes later.(the modem itself didn't reset)

After doing as much troubleshooting of my own as I could (making sure it wasn't my router, replacing my modem etc) the problem still happened so I called Comcast and got a tech out here.

The first tech checked my signals and said they were good, then replaced the splitter up to my modem. This didn't help, the problem persisted the next day.

The second tech I got out here checked my signals and said right away that they were all over the place. He then told me he wanted to replace my line from outside to in, which is what happened on the next visit.

This tech also put in a bigger splitter to drop down my downstream signal.

Needless to say my connection was solid for over a month. My receiving signal sat at .5 - 1.1, which is fairly good. Along with my SNR around 36 and upstream at 46. None of these fluctuated much until recently.

Now here is the strange part. Since last week, I've been getting delays/interruptions while playing games/chatting on skype/browsing the web. Anything sending constant data basically. Maybe packets being dropped or disrupted along the way?

The problem started when I got disconnected and had to power cycle my modem as it didn't come back up on it's own. (as it did with the original issue)

After that I checked my signals only to see my downstream signal sitting at -6.5. SNR and Upstream both seemed normal. To me that is a big jump in signal. (I know colder weather can change it, but it seems to change even in the middle of the day)

I started to monitor it ever since and have watched it drop to -3.8 and back to -7.5. Every time I have a pause in my connection, which lasts about 5 seconds, I get that drop in signal and a "R002.0 No Ranging Response received - T3 time-out error" occurs in the log.

Now, my best bet would be the signal is changing because the cables and splitters outside of the building that go in are just hanging there.
With the recent cold weather I could imagine it's harsh on some of the equipment. I've had techs tell me before the whole building has screwy wiring. The one who replaced my cable told me Comcast would be contacting my apartment management company to try and work out a new installation for the complex. I haven't heard anything about it since.

Anyway, I wanted to ask if the pauses I'm experiencing could be caused by that fluctuating downstream signal? It seems with the t3 logs also popping up at the same time that it's related.

Anyone give me their thoughts? Sorry this is so long, I wanted to include everything up to this point to try and accurately figure out my problem.]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23378634</guid>
<pubDate>2009-11-22 11:13:35</pubDate>
</item>

<item>
<title>[DNS] Unable to Access My Devices</title>
<link>http://www.dslreports.com/forum/remark,23378610</link>
<description><![CDATA[I installed a new Comcast-issued Ambit D3 HSI modem last Friday as part of a triple play service upgrade, and still have the "old" Arris Emta/modem in service for CDV only. 
The DNS hepler assistant which had been previously turned off   now came back "on" I assume, with the new modem.
If I go into Comcast Central / Users and Settings / under My Devices, no device information is available, so I am unable to toggle this feature on or off. I was able to work-around this by using OpenDNS servers in my router options, but would prefer to use the Comcast servers since they felt much snappier returning web pages.
Is it possible the new modem information simply has to propagate over different systems in order to be accessed in Customer Central?
Also, not that it matters, I noticed only two channels are being used for downstream and one up. I was under the impression Docsis-3 used four channels down, unless that's only for the highest speed tier service. 
--
~Help Find a Cure for Cancer~ ~Proud Member of Team Discovery ~]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,23378610</guid>
<pubDate>2009-11-22 11:05:38</pubDate>
</item>

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