ADSL in Cairns...

**Shijku** · 19-08-08, 06:49 AM

ok, i'm up in city view for thoses who live in cairns... it been bugging me for while... just checking if it just me or everyone...

i'm on a 8mbit with internode, however only connecting at 2 - 3mbit... from my area... just woundering if any1 else is on a 8mbit connection with who ever and is acually connecting at 8mbit?

Spec...

Core 2 Quad Q9550
4GB DDR3
750gb
dlink 200 / 502t

**RHCP** · 19-08-08, 07:49 AM

There's nothing out of the ordinary about that sync rate. The connection speed will be drastically affected by your distance from the exchange, the quality of the wiring in your house, the other devices (phones faxes etc) and the type of adsl filter used.
You can try doing a isolation test

Look in your modem for attenuation and post what you have, as this gives us an idea of the amount of interference which is occurring.

You can try upgrading your modem/routers firmware and playing around with the modulation modes.

Anyway, im not in cairns so my speeds are irrelevant, but i have adsl 2+ and i have only ever been able to connect using ADSL modulation - although i get 7k down and 1k up, which is nice after 1.5mb, so i haven't got around to investigating it...

Cheers, RHCP.

Edit: Just did a quick 1 minute search and discovered that my ISP uses modem profiles - ie my connection mode is set by them....which would explain why i can only connect using ADSL D.gmt. Now that i think about it, it's quite obvious lol.

**Shijku** · 19-08-08, 08:32 AM

test on 502t

ADSL Firmware Version: 4.03.03.00 - 3.02.00.03 - 3.02.06.00 Annex A - 01.07.02 - 0.49
ADSL Software Version: V2.00B06.AU_20060808
Line State Connected
Modulation G.dmt
Annex Mode ANNEX_A
Max Tx Power -38 dBm/Hz
SNR Margin 5 dB 7 dB
Line Attenuation 41 dB 19 dB
Data Rate 3232kbps 2024 kbps

dlink 200
well what more can you say? best modem for dls

i'm about 3km from exchange area, cant get adsl2 yet =/

**RHCP** · 19-08-08, 11:02 AM

That line attenuation sounds about right for 3km - a rough figure is 13 db of loss /Km.

DSL speed vs distance & attenuation
DSL speed vs distance
DSL speed vs distance
G.DMT DSL vs attenuation & distance

The first link is good as it has both distance and attenuation, and the last one is specific for the connection method your using.

I believe these graphs show the maximum or theoretical speeds attainable, so in the real world i would subtract about 20%; the sync rates then begin to approach what you are achieving.

Cheers, RHCP.

19-08-08, 06:49 AM	#1 (permalink)
Shijku Member iTrader: (0) Join Date: Jan 2008 Posts: 46 Spent time on board: 20:51:27	ADSL in Cairns... ok, i'm up in city view for thoses who live in cairns... it been bugging me for while... just checking if it just me or everyone... i'm on a 8mbit with internode, however only connecting at 2 - 3mbit... from my area... just woundering if any1 else is on a 8mbit connection with who ever and is acually connecting at 8mbit? Spec... Core 2 Quad Q9550 4GB DDR3 750gb dlink 200 / 502t

19-08-08, 07:49 AM	#2 (permalink)
RHCP Depressingly Boring iTrader: (3) Join Date: Jan 2008 Location: Molesting a Cow Posts: 257 Spent time on board: 3 Weeks, 2 Days and 8:23:00	There's nothing out of the ordinary about that sync rate. The connection speed will be drastically affected by your distance from the exchange, the quality of the wiring in your house, the other devices (phones faxes etc) and the type of adsl filter used. You can try doing a isolation test Look in your modem for attenuation and post what you have, as this gives us an idea of the amount of interference which is occurring. You can try upgrading your modem/routers firmware and playing around with the modulation modes. Anyway, im not in cairns so my speeds are irrelevant, but i have adsl 2+ and i have only ever been able to connect using ADSL modulation - although i get 7k down and 1k up, which is nice after 1.5mb, so i haven't got around to investigating it... Cheers, RHCP. Edit: Just did a quick 1 minute search and discovered that my ISP uses modem profiles - ie my connection mode is set by them....which would explain why i can only connect using ADSL D.gmt. Now that i think about it, it's quite obvious lol. __________________ Democracy: Three wolves and a sheep voting on what's for lunch.

19-08-08, 11:02 AM	#4 (permalink)
RHCP Depressingly Boring iTrader: (3) Join Date: Jan 2008 Location: Molesting a Cow Posts: 257 Spent time on board: 3 Weeks, 2 Days and 8:23:00	That line attenuation sounds about right for 3km - a rough figure is 13 db of loss /Km. DSL speed vs distance & attenuation DSL speed vs distance DSL speed vs distance G.DMT DSL vs attenuation & distance The first link is good as it has both distance and attenuation, and the last one is specific for the connection method your using. I believe these graphs show the maximum or theoretical speeds attainable, so in the real world i would subtract about 20%; the sync rates then begin to approach what you are achieving. Cheers, RHCP. __________________ Democracy: Three wolves and a sheep voting on what's for lunch.

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19-08-08, 08:32 AM	#3 (permalink)
Shijku Member iTrader: (0) Join Date: Jan 2008 Posts: 46 Spent time on board: 20:51:27	test on 502t ADSL Firmware Version: 4.03.03.00 - 3.02.00.03 - 3.02.06.00 Annex A - 01.07.02 - 0.49 ADSL Software Version: V2.00B06.AU_20060808 Line State Connected Modulation G.dmt Annex Mode ANNEX_A Max Tx Power -38 dBm/Hz SNR Margin 5 dB 7 dB Line Attenuation 41 dB 19 dB Data Rate 3232kbps 2024 kbps dlink 200 well what more can you say? best modem for dls i'm about 3km from exchange area, cant get adsl2 yet =/

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