lev
Premium,Ex-mod 2002-08
join:2001-05-30
Chicago, IL
clubs: 
 ·AT&T Midwest
| Yes, my noise margin is 3... what's it to you?
ADSL Line State: Up
ADSL Startup Attempts: 50
ADSL Modulation: DMT
ADSL Data Path: Interleave
Datapump Version: DSP 5.2.2.0, HAL 5.2.2.0
Downstream Upstream
---------- ----------
SNR Margin: 3.00 14.00 dB
Line Attenuation: 63.50 31.50 dB
Output Power: 17.16 11.83 dB
Errored Seconds: 0 0
Loss of Signal: 0 0
Loss of Frame: 0 0
CRC Errors: 511 6
Data Rate: 2496 512
----
So my connection resets every few hours. At least I have broadband.
---
started to keep discussion away from this post in another thread. |
|
nwrickert
sand groper
Premium,MVM
join:2004-09-04
Geneva, IL
·AT&T Midwest
| ... what's it to you? That makes me wonder whether I should try to get bumped up to a higher speed.
Data Path: Fast
Transceiver Information
DSL Speed (Kbits/Sec) 1536 384
Margin (dB) 15.5 16.0
Line Attenuation (dB) 50.5 31.5
Transmit Power (dBm) 8.7 4.7
We are using different modems, so the statistics are not completely comparable. With a 5100b I get a higher attenuation (54 or 55 I think).
What holds me back from asking, is that the 1536 is adequate for most of what I do, and reliable is more important than fast.
--
AT&T dsl; Westell 327w modem/router; SuSE 10.1; firefox 2.0.0.13 |
|
wayjac
Premium
join:2001-12-22
Indy | reply to lev
I'm guessing its a netopia modem that's hanging on to that signal like there's no tomorrow |
|
Dennis
Premium,Mod
join:2001-01-26
Algonquin, IL | I honestly thought nothing below 5 would ever hold...with a noise margin that small you might want to look at buying a Hummer. |
|
lev
Premium,Ex-mod 2002-08
join:2001-05-30
Chicago, IL
clubs:
·AT&T Midwest
edit:
April 24th, @11:16PM
| reply to nwrickert
said by nwrickert  :... what's it to you? That makes me wonder whether I should try to get bumped up to a higher speed. You probably could, even on Fastpath.
The key line in what I posted that allowed that is:
ADSL Data Path: Interleave
Otherwise, it'd be dead as a doornail.
The chipset in this modem is, I believe, the same chipset in the Motorola 2210. My older modems couldn't sync nearly as high on this crappy line. |
|
gdm
Premium,MVM
join:2001-06-15
Mchenry, IL
clubs:
 ·AT&T U-Verse
 ·AT&T CallVantage
·Comcast Digital Vo..
 ·Comcast
| reply to lev
Didn't some one tell me they would rather have dsl then interleave U-verse???
Hmmm here's my stats on interleave  .
DSL Down Up
Current Rate: 25216 kbs 2048 kbs
Max Rate: 62076 kbs Not Available
Current Connection:
Current Noise Margin: 26.0 dB Not Available
Current Attenuation: 22.4 dB Not Available
Current Output Power: 13.7 dBm -12.2 dBm |
|
lev
Premium,Ex-mod 2002-08
join:2001-05-30
Chicago, IL
clubs: | I did, but I found that interleave only took my latency up 10ms.
I'd take UVerse at this point, but only with static IPs, which they're still not offering. |
|
VegasMan
Are We There Yet?
join:2002-11-17
Schaumburg, IL
| reply to lev
That's funny my SN has been around 6.5-7 all week and I haven't lost connection other than when I reset the modem trying to get a better ratio. My attenuation has been steady at 45.
I still putter along at 5.1/520 on my speed test and have low errors using a 4100.
--
In need of a Vegas vacation.
|
|
Floydo
join:2005-07-19
Wayland, MI
| reply to lev
Yup, mine hangs on pretty good at 3 to 5dB with a 4100 and the Elite pkg.
Line State UP
Modulation DMT
Data Path fast
To Modem To Internet
Max Allowed Speed (kbps) 4704 768
SN Margin (dB) 3.0 -
Line Attenuation (dB) 58.0 - |
|
gdm
Premium,MVM
join:2001-06-15
Mchenry, IL
clubs: | reply to lev
To me the interleave seems to be 10-15 for me with u-verse.
Rumors on utalk or uverseusers that someone was getting charged for a static IP on U-verse. Waiting on the guy to post his bill but nothing yet. |
|
d_l
Barsoom
Premium,MVM
join:2002-12-08
Reno, NV
| reply to lev
I don't know the official numbers, but from what I've seen, interleave mode for DSL is worth about 3.0 dB extra noise margin, more or less. Sometimes the extra interleave latency is a small price to pay for the additional noise margin. |
|
public
join:2002-01-19
Santa Clara, CA
·DSL EXTREME
| reply to nwrickert
said by nwrickert :[Margin (dB) 15.5 16.0 Line Attenuation (dB) 50.5 31.5 Transmit Power (dBm) 8.7 4.7 We are using different modems, so the statistics are not completely comparable. With a 5100b I get a higher attenuation (54 or 55 I think). It does not make sense to have 50dB atten with 16dB snr and only 9dBm Tx power.
Reducing the dmt spectrum to a single number does not give good results. |
|
public
join:2002-01-19
Santa Clara, CA
·DSL EXTREME
| reply to lev
said by lev :The chipset in this modem is, I believe, the same chipset in the Motorola 2210. My older modems couldn't sync nearly as high on this crappy line. The problem is the line or noise environment may degrade over time. |
|
nwrickert
sand groper
Premium,MVM
join:2004-09-04
Geneva, IL
·AT&T Midwest
| reply to public
said by public :It does not make sense to have 50dB atten with 16dB snr and only 9dBm Tx power. That's going to depend on the modem. I should have mentioned that those figures are with a Westell 327w, and 1536 downstream speed. I would expect a higher transmit power with a higher speed.
--
AT&T dsl; Westell 327w modem/router; SuSE 10.1; firefox 2.0.0.13 |
|
lev
Premium,Ex-mod 2002-08
join:2001-05-30
Chicago, IL
clubs:
·AT&T Midwest
| reply to lev
Now my noise margin is 2
I'd really, really like to have better bang for the buck than this.
Still, I'm wondering how low it will go and still function. No DSL reset for the past two days.
----
ADSL Line State: Up
ADSL Startup Attempts: 4
ADSL Modulation: DMT
ADSL Data Path: Interleave
Datapump Version: DSP 5.2.2.0, HAL 5.2.2.0
Downstream Upstream
---------- ----------
SNR Margin: 2.00 13.00 dB
Line Attenuation: 63.50 31.50 dB
Output Power: 16.79 11.64 dB
Errored Seconds: 0 0
Loss of Signal: 0 0
Loss of Frame: 0 0
CRC Errors: 8374 7
Data Rate: 1984 512 |
|
d_l
Barsoom
Premium,MVM
join:2002-12-08
Reno, NV
| reply to lev
Re: Yes, my noise margin is 3... what's it to you?
Is that interleave mode the old high latency, high depth (16?) version or the new low latency, low depth (4) interleave?
Have you ever experimented with different modems on the line such as the AR-7 Speedstreams, a 2210, or 2Wires to see if their AFEs, chip sets, and firmware might give better results? |
|
Dennis
Premium,Mod
join:2001-01-26
Algonquin, IL
·AT&T Yahoo
Host:
Chicago
Users find Hot Deals
Users find Hot Dea..
Requests for Hot D..
Home Repair & Impr..
| said by d_l :Have you ever experimented with different modems on the line ... Are you kidding? If I was him I wouldn't even look a the modem for fear of causing a loss of sync. 
--
My Blog. Because I desperately need the acknowledgement of others.
Visit the Judd Family website to see my kids! |
|
lev
Premium,Ex-mod 2002-08
join:2001-05-30
Chicago, IL
clubs: | reply to d_l
It's the new, low-latency interleave.
Pings to www.dslreports.com are either 44 or 45 ms.
It's a Netopia 3347, which uses the same chipset as the Motorola 2210. |
|
d_l
Barsoom
Premium,MVM
join:2002-12-08
Reno, NV | reply to lev
There are still differences in the AFE circuitry between modems and also probably in the programming/operation of the AR7 chip set (the DSP datapump firmware). |
|
