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East Tennessee latency problems »
« DNS resolution issues to mail.charter.net?  
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Tecklord

join:2001-01-27
Belleville, IL

Signal Levels

Is it time for a truck roll here? I have had bad luck with Charter lately and it all started when I moved into this area. The were great on the other side of town.

Acquire Downstream Channel 733750000 Hz Locked
Connectivity State Operational Operational
Boot State OK Operational
Security Disabled Disabled

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

Downstream Channel

Lock Status Operational
Modulation 256QAM
Channel ID 1
Provisioned Rate 5048 kbps
Symbol Rate 5360.537 Ksym/sec
Downstream Power -12.6 dBmV
SNR 33.5 dB

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

Upstream Channel

Lock Status Operational
Modulation 16QAM
Channel ID 2
Provisioned Rate 512 kbps
Symbol Rate 2560 Ksym/sec
Upstream Power 40.3 dBmV

2007-08-18 14:07:39 error ToD request sent- No Response received
2007-08-18 14:07:38 critical DHCP WARNING - Non-critical field invalid in response.
2007-08-18 14:07:27 critical Init RANGING Critical Ranging Request Retries exhausted
2007-08-18 14:07:27 critical No Ranging Response received - T3 time-out
2007-08-18 14:05:01 critical Init RANGING Critical Ranging Request Retries exhausted
2007-08-18 14:05:01 critical No Ranging Response received - T3 time-out
2007-08-18 14:02:45 critical SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing
2007-08-18 14:02:43 critical No UCD's Received - Timeout
2007-08-18 14:02:31 critical SYNC Timing Synchronization failure - Failed to acquire FEC framing
2007-08-18 14:02:22 critical Init RANGING Critical Ranging Request Retries exhausted
2007-08-18 14:02:22 critical No Ranging Response received - T3 time-out
2007-08-18 13:59:41 critical Init RANGING Critical Ranging Request Retries exhausted
2007-08-18 13:59:41 critical No Ranging Response received - T3 time-out
2007-08-18 13:58:11 critical Init RANGING Critical Ranging Request Retries exhausted
2007-08-18 13:58:11 critical No Ranging Response received - T3 time-out
2007-08-18 13:56:31 critical Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 timeout
2007-08-18 13:55:59 critical Started Unicast Maintenance Ranging - No Response received - T3 time-out
2007-08-18 13:55:31 critical No Ranging Response received - T3 time-out
2007-08-18 13:55:08 critical Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 timeout


neofate
Caveat Depascor
Premium
join:2003-11-11
Birmingham, AL

Possibly.

Your Rx power level is slightly on the edge/borderline.

With a Tx of 40dBmV, it gives me the indication that your modem isn't behind many splitters,..

That information would help validate the need for a technician.

How many splitters, and of what type are between your drop and the modem?

Looks like maybe a 2way at most -- Unless your Tx powerlevel is 'extremely' low at the demarc.

What exactly is occurring, and at what intervals?

Again, the layout of your cabling and splitters from Demarc to Cable Modem will be of great help.

Also what speeds are you 'expecting',.. if that is an issue. Currently it shows you should be getting about 500K Down, and 50-60K on the upload.

or , on a speedtest -- 4000-5000 Download, and 400-500 on the upload.

I am guessing you are having intermittent connectivity issues? Is that the case?

Also, how does the power level fluctuate during the day vs the night? (Ie: Take a reading at 7-8am, and then one at 2pm, then at night if you wish) -- To see how much the heat is pushing the signal.. Trying to see if its pushing beyond -12dB, or if that's the 'limit' at the worst.

This might be something you can adjust on your own, if your lines going to the modem are out of wack, and/or splitters/ground block.

If you want,.. take your modem and wireless router (or modem and a laptop) to your groundblock. (Or run a new cable from the ground block straight to your cable modem (bypassing all existing cables and splitters) -- To get a reading of your signals at the Demarc.

What I'm driving at, is if your Rx power level is a bit low coming into the home,.. if that is the case, then a Technician definitely needs to come out and fix you up.

We'll help you try to sort it as much as possible from our end, but if the Signal is low coming from the Drop, then you'll need a technician. (Redundant, I know.. )

Take care,
--
Life is not a problem to be solved, but a reality to be experienced.


BBT IV
Premium
join:2006-03-22
Central Point, OR
reply to Tecklord
Call in for a service call, your signal levels are way out of balance.


Tecklord

join:2001-01-27
Belleville, IL

I was hoping I would not have to call in but it seems as though I have no choice. I lose connection alot and seems to be ok at night. My node is way overloaded and my speeds are pretty low during peak hours but thats another story. Thanks for the help people.

Tazkven

join:2007-01-17
Louisville, KY

reply to Tecklord

As Neo pointed out your signals are within the window of optimal operation, however ... your downstream power level is on the verge of being borderline.

To add to that I would also check for flucuation. From your last post I believe you are saying you are having an intermittent connectivity issue and that is usually caused by flux in a signal.

You can check that by logging into your modems internal signal page and monitoring for a few minutes and refreshing the page if it does not auto refresh. Looking for any sudden signal changes of 2 or more.
Forums » US Cable Support » Charter HSI/CATVEast Tennessee latency problems »
« DNS resolution issues to mail.charter.net?  


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