MGA_SOC
join:2006-06-01
Macon, GA | reply to cmjstota
Re: Rediculous Speeds, Simply Rediculous. HELP!!!
Just a reminder, we have scheduled you an appointment to have a senior data technician come and trouble shoot your problem on Thursday 6-28 between 8:00 and 8:30 pm. |
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cmjstota
Premium
join:2003-02-27
Warner Robins, GA
| reply to MGA_SOC
Yeah my signal levels are cool now at 3dbmv or so downstream and 44dbmv upstream, now there's just the issue of the unbelievably slow evening speeds...AKA I can't get 3mb bandwidth on a speedtest or download faster than 200kb off like ftp optonline. Normally I hit 15k-18k with speedboost when it isn't evening hours on Speedtest.net and then between 1500-2100kbps on FTP Optonline. So it's well below the norm but if I check it after midnight it will be much better and getting better. |
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MGA_SOC
join:2006-06-01
Macon, GA
| reply to cmjstota
We have performed work in your area last night to try and correct the problem you have been experiencing. We also have a technician who will be checking your signal at the street this evening. He will also be performing a speed test from the street during the time frame you mentioned earlier. Your signal levels have improved drastically since last night. Your RX is averaging at +3 and your TX at +44. We apologize for the problem you have been experiencing, and we will keep working diligently until this issue has been resolved. We will check back with you tomorrow to see if the last 2 nights corrections have made any difference in your speed. |
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Gamer
join:2006-12-09
Phoenix, AZ | reply to cmjstota
GN gets bogged down during peak hours. It takes me 4-5 connections to get 12Mbps at times (Hence why you get more than one connection). |
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cmjstota
Premium
join:2003-02-27
Warner Robins, GA
| reply to cmjstota
YAY my speeds suck again, Don't know what it is about Sunday nights heh but it's always the start of something bad....
Does anyone know what this means?
Downloading anything with a single connection is much slower than it should be BUT when I'm downloading from a newsgroup such as Giganews where I get max speeds usually if I use one connection it bounces around really slow then when I use 20 connections it now is steady at max speed over 12mbps but its the only way I get max speed. Wouldn't that mean that it's more of a quality of service issue then a speed issue? Like I'm losing packets or something? |
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CoxTOC1
join:2007-05-15
Newport News, VA
| reply to vraeden
said by vraeden  :Wanted to add, I spoke to a tech on the phone and he said my modem had a perfect signal, but wouldn't admit that the low speeds is a real problem. Send me your modem's MAC address and I'll look into it. |
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cmjstota
Premium
join:2003-02-27
Warner Robins, GA
| reply to maxpower
So far tonight speeds are good. I'm keeping an eye on them. Right now my Levels are good too better than last night....The downstream is at +10dbmv instead of +14 or +15 and the upstream is at +45dbmv. I guess time will tell if it is going to stay this way or not. MGA_SOC got back with me so I won't bother to schedule a tech. roll out as they will handle it. |
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maxpower
join:2006-10-09
Providence, RI | reply to cmjstota
Do your levels seem to change when the speeds are bad? Are you going through a router? Were you able to setup an appointment to have a tech come out? |
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vraeden
join:2007-06-21
Gainesville, FL | reply to vraeden
Wanted to add, I spoke to a tech on the phone and he said my modem had a perfect signal, but wouldn't admit that the low speeds is a real problem. |
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vraeden
join:2007-06-21
Gainesville, FL | reply to TheFoX210
I have the Exact Same problem. Fine around 8am, terrible all evening into the early morning. In Florida. Was better at old apartment, just moved. |
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TheFoX210
join:2007-06-21
Phoenix, AZ | reply to Gamer
That I can't answer since I'm not a field tech. I agree that when the summer hits levels will change like that. There's work being done to the system to hopefully correct that issue through the use of automatic gain controllers. |
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Gamer
join:2006-12-09
Phoenix, AZ
1 edit | reply to TheFoX210
I'll take a modem with a TX of 35dBmV over 50dBmV in Phoenix any day. The contractors keep aiming for 50dBmV in the winter, then the minute summer hits people seem to drop like flies with TX levels of 55dBmV+.
Given that the 'solution' to a modem with a TX power of less than 35dBmV is to get it to 40+dBmV with an attenuator, why not just let the modem, which is perfectly capable of doing so, transmit at 35dBmV if the CMTS tells it to? |
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TheFoX210
join:2007-06-21
Phoenix, AZ
1 edit | reply to CoxTOC1
. |
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CoxTOC1
join:2007-05-15
Newport News, VA | reply to TheFoX210
Actually TheFoX210 you are incorrect on your signal levels.
SNR is 35db and above
Tx is 35 to 52 dBmV
Rx is -15 to 15 dBmV
Are the current acceptable signal levels. |
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TheFoX210
join:2007-06-21
Phoenix, AZ
1 edit | reply to Gamer
. |
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cmjstota
Premium
join:2003-02-27
Warner Robins, GA
| reply to Gamer
The power level is consistant during the day and night when its bad and good the levels are the same. I do have a Motorola SB5120 also. There is no inline amplifier in place and I have 2 splitters one when the signal comes into the house to go to 2 different rooms and the other in my room with it going to the Cable and Modem. |
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Gamer
join:2006-12-09
Phoenix, AZ
2 edits | reply to m8trix
said by m8trix :dont you want to be as close to zero as possible whether you are on the positive or negative side.hes at +14 putting him at the outter edge of where you want to be... Downstream Received Power: the DOCSIS specification requires cable modems to function correctly with downstream power levels in the range -15 dBmV to +15 dBmV: power readings at or close to those extremes are likely to be unacceptable.Generally, power level should be between -5db and +5db for best performace If your modem only has a tolerance of +/-5 dB, replace it.
The generally accepted value for DSPwr is 0 dBmV +/- 10 dB, while USPwr is ideal at 40 dBmV , +/- 10 dB.
As it stands, the Moto's handle an overly strong signal very well (The original post looks like a SB5120). It's not uncommon for Cox to test a line with a Moto directly at the tap, without attenuating the signal, and have significantly stronger signal levels than that without consequence.
I will agree that if there is a line amp on the premises causing the signal to be at those levels, it should be removed. Futhermore, if the modem loses sync during the periods of slow connectivity or there is a substansial increase in the power level during these periods, that would indicate a signal problem. |
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m8trix
join:2003-12-24
Phoenix, AZ
 ·Cox HSI
| reply to cmjstota
dont you want to be as close to zero as possible whether you are on the positive or negative side.hes at +14 putting him at the outter edge of where you want to be...
Downstream Received Power: the DOCSIS specification requires cable modems to function correctly with downstream power levels in the range -15 dBmV to +15 dBmV: power readings at or close to those extremes are likely to be unacceptable.Generally, power level should be between -5db and +5db for best performace |
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Gamer
join:2006-12-09
Phoenix, AZ
| reply to m8trix
said by m8trix :well first thing a tech is most likely want to do is improve the signal strength on the downstream,this could be a bad splitter or to many splits It doesn't need to be improved, +15dBmV is a level near 40 times stronger than necessary. While this is nearing too strong, there's really no need to attenuate it.
Modems work fine directly off the tap with signal levels around +15-20 dBmV DSPwr, +25-35 dBmV USPwr. |
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cableguy619
join:2003-06-24
Chula Vista, CA | reply to cmjstota
Yeah someone isnt reading :P, You are pretty hot on your rx at 14. Are you running a inline amp? If so remove it. |
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