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[welshmike]

http://www.speedtest.bbmax.co.uk/ shows download rate of 5772 kbps

Below is what I got from http://www.kitz.co.uk/adsl/frogstats.php#54 showing a downstream rate of 6752 Kbps
Why the difference and can I calculate how far I am away from my exchange that has a max rate of 8Mb?

--- System Information ---
Vendor: Linksys
ModelName: WAG160N
Firmware Version: A1.00.09 , 2008-05-05T17:46:41
GUI Version: A1.00.09_007
Boot Version: 1.0.37-5.4
Hardware Version: 0.01

--- DSL Information ---
DSL Driver Version:  AnnexA version - A2pB022g.d20e
DSL VPI/VCI:         0/38
DSL Status:          ShowtimeRetrain Reason:   8000
DSL Mode:            ADSL2+
DSL Channel:         FAST
DSL Upstream Rate:   904 Kbps
DSL Downstream Rate: 6752 Kbps

                      Down         up   
DSL Noise Margin:     9.3 dB       9.0 dB
DSL Attenuation:     49.5 dB      26.7 dB
DSL Transmit Power:   0.0 dBm     12.9 dBm

--- Wireless Information ---
Wireless Driver Version: 6.1.1.98
Wireless Tools Version: 28
Wireless Status: Enabled
Wireless Wide Channel: 9
Wireless Standard Channel: 11- 2.462GHZ
Wireless SSID: linuxnet
---
     

[roseway]

Hi welshmike,

The difference between the two speeds is that the downstream rate (6752 kbps) is the rate negotiated between the router and the exchange equipment, and the figure from the speedtester (5772 kbps) is the actual download speed which was achieved in the test. Actual download speeds will always be less than the negotiated connection rate because of overheads, network conditions, and other factors.

You can get an estimate of the line length by entering the downstream attenuation figure (49.5 dB in your case) in the max speed calculator. When you do this you'll see that your connection speed is exceptionally good for that level of attenuation.

[welshmike]

Thanks for the info.

The calculation results in 2.2 miles.
By road my house is 1.5 miles from the exchange so there may be additional attenuation due to poor connectivity between the exchange and my modem/router or the cabling route is somewhat indirect.

Mike

[burakkucat]

. . . or the cabling route is somewhat indirect.

That will be the case. The 0.7 mile difference is well within "experimental error".