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cgigate

join:2003-05-12
Fort Worth, TX

2 edits
reply to shmore2

Re: low snr

Your stat looks like my line stat!
but my Attenuation is even higher (63.5)


shmore2

@sympatico.ca
cgigate
what profile are you on?

cgigate

join:2003-05-12
Fort Worth, TX

2 edits
said by shmore2:



cgigate
what profile are you on?
My line stat, it looks bad, but it is very stable! I'm on 2.5M profile

--- DSL Status
DSL State - Up

Tx Rx
CRC Errors 0 0
FEC Errors 0 0
HEC Errors 0 0
NCD Errors 0 0
LCD Errors 0 0
LOS Errors - 0
SEF Errors - 0

--- ATU-R Channel Info
Current Tx Rate - 640000
Previous Tx Rate - 0

--- ATU-C Channel Info
Current Tx Rate - 2112000
Previous Tx Rate - 0

--- ATU-R Physical Layer Info
Current SNR Margin - 5.0
Current Attenuation - 63.5
Current Status:
No defects detected
No loss of framing detected
No loss of signal detected
No loss of power detected
No loss of signal quality detected

--- ATU-R Line Status
Line Coding - DMT
Line Type - Interleaved
Actual ADSL Mode - G.DMT
Requested ADSL Mode - Multi


CigaR4
Premium
join:2004-08-24
How do I check my line stats, do I need a modem capable of doing that task?

thanks


Leathal
Premium
join:2002-02-09
canada
kudos:2
reply to cgigate
cgigate,

There is no such thing as a 2.5M profile. There is only 1.5M and 3M, thus you are a 3M profile that will give you the highest possible speed your modem/line can handle. Your line attenuation is so high that its probably why your upstream maxes out at 640k instead of 800k.

shmore2,

Your attenuation is pretty high that's why you are getting 5 SNR, if it were lower, say in the thirties you would be getting around 15 to 20 SNR so don't listen to cybersnow.

Leathal


RobinK

join:2004-04-16
Canada
Hey Leathal, »Canadian Broadband FAQ »What are all the different speed profiles available?

I am also on a 640kbit upload profile.
--
Argue opinions using facts. Not facts using opinions.

gaosan

join:2003-04-19
Kanata, ON
reply to cgigate
Click for full size
Here is my line stats. SNr 6.5, atten 63.5.
Can I get better profile? I am on 928k/160k.

Thanks.

my3cents4

join:2004-06-19
Ottawa, ON
reply to Leathal
yes there is a 2.5 profile. actually the sync rate for that profile is 2496 down..... it exists


bylo
Premium
join:2004-05-04
Waterloo, ON
reply to gaosan
said by gaosan:

Here is my line stats. SNr 6.5, atten 63.5.
Can I get better profile? I am on 928k/160k.
It's doubtful. Look at the number of errors: ~3 million per hour! It's amazing that you get connected at all.

How often do you lose your connection?


Leathal
Premium
join:2002-02-09
canada
kudos:2
reply to gaosan
said by gaosan:

Here is my line stats. SNr 6.5, atten 63.5.
Can I get better profile? I am on 928k/160k.

Thanks.
Start by connecting your modem to the demarc point. That's were Bell Canada's wire comes to your house and other wires go the rest of your house. Test to see if the speed is better or worse.

Leathal

gaosan

join:2003-04-19
Kanata, ON
reply to bylo

Re: Low speed, any chance to go to 1.5 M

bylo,
I do not understand what "RX FEC" means here. my guess is all dada I received was encoded by FEC, so it is not error indicator but just number of data I received. The only error showed should be in "RX CRC". Is this true? May be I need dig some web pages to find out what it exactly means.

My connection is very stable. I got a router behind the modem. My connection is always connected, never drop.


bylo
Premium
join:2004-05-04
Waterloo, ON

1 edit
said by gaosan:


bylo,
I do not understand what "RX FEC" means here. my guess is all dada I received was encoded by FEC, so it is not error indicator but just number of data I received. The only error showed should be in "RX CRC". Is this true? May be I need dig some web pages to find out what it exactly means.
My understanding is that FEC (Forward Error Correction) is a means of adding redundancy such that transmission errors can be corrected by the recipient without having to get the sender to resend the data.

My SS6300 (which has been up for some 44 days now) shows RX FEC = 0 and RX CRC = 530. I'm on a reduced speed line (1768/640) with SNR = 8 and Atten of 44db. Even with those stats I experience the occasional DSL disconnection, however the SS6300 seems to be able to recover without a reboot.

P.S. If a high RX FEC is normal, i.e. indicates amount of data transferred rather than errors, then why is your TX FEC zero?

[Edit] I echo the suggestion to try connecting your DSL modem directly to the demarc so as to rule out bad house wiring. If possible, disconnect the house wiring from the demarc when you perform this test.


Goden99School

@johnabbott.qc.ca
50 Attenuation, you should have an SNR of around 10ish.

Your SNR is low. It really sounds like you have bad wiring in your house.
With out further tests there is no way to find out.

Best thing to do before calling Bell or your ISP to do test is to go outside. UNPLUG the house and plug your modem in if you have the jack demarc. if you have the two wire demarc get a phone wire you don't need and cut the head of and strip the two wires. unplug the house and get yours and the bell wires to touch.
Have an extension cord ofcourse with modem and if you don't have a laptop get a long ethernet wire and run it to your pc and check results.
If the SNR increases more than 3~5 points and attenutation drops and your sync increases by over 200 then you have a wiring problem. Try splitting the phone wire from there. Have it split there directly. one directly to your modem other to filter then to your house. (making your own Pot Splitter)

my3cents4

join:2004-06-19
Ottawa, ON
he doesnt need to do this. if it gets escalated far enough aka the test centre and he is too far they will tell him. your too far your too far. if a line transfer is available he gets it. bell is bending over backwards to bring in the money. hooking up to the dmarc is only proving that the issue is your inside wiring and you neeed to fix that on your own


TilhasBB
Premium
join:2000-08-05
canada
from experiance it looks like it might be some inside wiring.
It might not give him the full 3meg sync but he might improve and might get better signal


CigaR4
Premium
join:2004-08-24
That is true. A few weeks ago I unplugged all my house wiring at the demarc and tested my connection by only putting my modem at the demarcation point, and my SNR levels went from 6.5 to 14 ; an increase of 7.5 which is alot. Now I have to fix my inside wiring.
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CiG