The fact the first three figures are the same suggests you are on a fixed speed product, i.e. probably sold as 1 Mbps

The attainable is what the modem thinks it could manage if allowed to run at the speeds supported by the ADSL standard.

Why does the modem 'think' it could manage a particular value? Is this something it is 'told' (and thus could be limited by some company/vendor data), or is this the rate that it may be able to achieve based on physical/technical characteristics.. e.g., is it a theoretical value unencumbered by tarrif/contract restrictions?

Thx,
MS

" is it a theoretical value unencumbered by tarrif/contract restrictions?"

That is precisely what it is, and as the modem can see the information on all the frequencies available to it, it is usually reasonably accurate.

What are the 2 blocks (9 lines) of stats below those?

Here's all the details... why do you ask? looking for clues as to what be limiting it (noise, etc?)

Max. DSLAM data rate kBit/s 1184 160
Min. DSLAM data rate kBit/s 1184 160
Attainable data rate kBit/s 5448 1088
Current data rate kBit/s 1184 160

Latency 16 ms 16 ms
Bit swap to off

Signal-to-noise ratio dB 27 31
Line attenuation dB 51 30
Power cutback dB 0 0

Loss of
Signal Loss of
Frame Forward Error Correction Cyclic Redun-
dancy Check No Cell Delineation Header Error Control
CPE 0 0 298 4 1 2
COE 0 0 0 0 4 0

Why do I ask? To see if you are getting what you should be getting, of course.

On your line with ADSL (G.992.1) you should be getting about 4.6 Meg downstream sync, but you are being held back by the high SNR margin (that's not noise itself but the strength of the signal compared with the noise) of 27 dB.

I would a guess that is because your ISP has put you on a fixed 1 Meg connection.

Re: your original Q, Attainable Data Rate is hinting at this by estimating the speed you could get with a 0dB SNR Margin instead of the standard 6dB I used in my estimate or the 27dB actually being imposed by your ISP.

the ISP is vague on what they sell - may well be 1M down 160k up

T-DSL list a service DSL-Anschluss am Anschlusstyp Standard (Analog) oder Universal (ISDN): Surfen mit bis zu 2.048 KBit/s Download- und bis 192 KBit/s Uploadgeschwindigkeit

Indeed, when I first got the DSL line, they indicated the max possible was 1 mbps. I'm curious as to if the attainable data rate of 5448 kbps happened some time ago, or if it was due to the recent upgrade... or if they were always BS'ing me.. I suppose I'll never know.

Why they would impose a 1 kbps restriction is beyond me... the provider has always advertised 'up to 16kbps' for the same price I've been paying... I was always under the impression that since our village is quite small, that the infrastructure was [censored].

I'm curious how you arrived at 4.6 mbps down? Why couldn't Telekom have told me this (or even the 5448 kbps), instead of telling me that it would be 'up to' 16 mbps. Is there a way to guesstimate what the bandwidth would be if I had the 50 mbps VDSL service, assuming I switched to Telekom?

In reply to a post by DoYouLikeHam:

I'm curious as to if the attainable data rate of 5448 kbps happened some time ago, or if it was due to the recent upgrade

Neither! It's measuring the current properties of your connection and it's ongoing. But forget it; it's purely a theoretical estimate thet you'll never attain. Concentrate on the actual speeds.

In reply to a post by DoYouLikeHam:

I'm curious how you arrived at 4.6 mbps down?

There are calculations that can be done on the physical propertoes of the line, e.g. see Maximum adsl speed calculator. Your ISP would be unable to do these calcs before the line was activated and so should have given you an estimate. At least that's how it is UK. Your ISP just gave you the "Up To" max based on the technology but not your particular line.

Edited by XRaySpeX (Tue 30-Jul-13 23:15:31)

It depends on exactly how they have the VDSL set up, and whether it is VDSL or VDSL2. Over here I am about 600 metres from the fibre cabinet and get a connection speed of around 52Mbps down and 16Mbps up.