Thread: 18Mb ADSL!!
View Single Post
Old 04-02-2005, 13:47   #10
Ignition
Permanently Banned
 
Join Date: Jun 2003
Location: South-East London
Age: 48
Services: Depends who's being serviced :p
Posts: 2,588
Ignition is cast in bronzeIgnition is cast in bronzeIgnition is cast in bronzeIgnition is cast in bronze
Ignition is cast in bronzeIgnition is cast in bronze
Re: 18Mb ADSL!!

RE-ADSL is Reach DSL which isn't ADSL2+ but a proprietary standard for increasing ADSL range. ADSL2 adds no reach to speak of to DSL services, ADSL2+ *can* add some reach but it depends on the power levels that are being permitted, and it's unlikely that the power levels will be permitted to go high enough to add any significant reach.

Sorry to be bearer of bad news, but still if you can get 2Mbit right now you can probably receive 4Mbit or maybe higher on ADSL 1.

Checking my line stats:

Downstream Speed: 2272 kbps

relative capacity occupation: 25% << 2272kbps is Using 25% of maximum possible capacity
noise margin downstream: 32.5 db << 32.5dB SNR margin over what is required for 2272kbps
output power upstream: 12.0 dbm << DSLAM at exchange is sending at 12.0 dBmV
attenuation downstream: 24.0 db << line loss downstream of 24 dB

According to a very rough guesstimate my telephone line is about 1.4KM long, and according to the rather excellent stats from my router is capable of 9088kbps downstream.

Upstream Speed: 288 kbps

relative capacity occupation: 30% <<< Using 30% of max
noise margin upstream: 31.0 db <<< This is maximum possible, exchange doesn't record more than 31dB.
output power downstream: 20.0 dbm <<< Router is sending 20dBmV down the line
attenuation upstream: 16.0 db <<< Exchange is seeing a loss of 16dB (lower due to lower frequencies)

My approximately 1.4KM long line is capable of 9088kbps downstream, and 960kbps upstream.

You don't have to live next door to the exchange to get more than 2Mbits
Ignition is offline   Reply With Quote