will adsl2 allow me to get higher speeds?

Honda08

ADSL Link

Connection Speed 6080 kbps 512 kbps Line Attenuation 50 db 15.5 db Noise Margin 6 db 12 db

these are my current router stats..


eircom net told me ADSL2 will allow me to get the full 7.6mb connection with good line quaility, ie the SN margin will improve and i will get the full service. i am about 4km from exchange.

any online checkers tell me my line will suport 5152kbps
is eircom right?

lucernarian

I can't read that mess of numbers and words to save my life...

Any way to have it more like what it appears on the screen, instead of just copy and paste?

Edit: Thanks for that, I can read it now!

Spear

Honda08 wrote: »

ADSL Link

Connection Speed 6080 kbps 512 kbps Line Attenuation 50 db 15.5 db Noise Margin 6 db 12 db

these are my current router stats..


eircom net told me ADSL2 will allow me to get the full 7.6mb connection with good line quaility, ie the SN margin will improve and i will get the full service.

is this true?

Eircom lied, you're lucky to be getting that sync speed with that attenuation. The SNR margin is also on the low side, do you get frequent disconnects?

Honda08

Spear wrote: »

Eircom lied, you're lucky to be getting that sync speed with that attenuation. The SNR margin is also on the low side, do you get frequent disconnects?

no disconnects it works ok
its so frustrating dealing with eircom

Spear

Honda08 wrote: »

no disconnects it works ok
its so frustrating dealing with eircom

Do you know how far you are from the exchange?

Honda08

Spear wrote: »

Do you know how far you are from the exchange?

4km from exchange

lucernarian

The downstream attenuation looks much too high compared to the upload. Could you turn off the router, turn it back on and post the new stats? And if the modem is going through a splitter/filter, could you plug it in directly to the phone socket before you measure the stats again?

This is to make sure that the modem is reporting those stats consistently.

This is a rough estimate based on the first set of stats, but I think that ADSL2+ would come nearer to, but not the "full 7.6 mbps" ADSL2 can go over 7.6mbps at 64/8 interleaving regardless, on better lines.

The 7.6 mbps package only exists because it's the max speed possible with full interleaving. No interleaving max speed is 8128.

Honda08

To_be_confirmed wrote: »

The downstream attenuation looks much too high compared to the upload. Could you turn off the router, turn it back on and post the new stats? And if the modem is going through a splitter/filter, could you plug it in directly to the phone socket before you measure the stats again?

This is to make sure that the modem is reporting those stats consistently.

This is a rough estimate based on the first set of stats, but I think that ADSL2+ would come nearer to, but not the "full 7.6 mbps" ADSL2 can go over 7.6mbps at 64/8 interleaving regardless, on better lines.

The 7.6 mbps package only exists because it's the max speed possible with full interleaving. No interleaving max speed is 8128.

i replaced all internal cabling yesterday,
now i have one connection off the main eircom cable , to an eircom ntu ( eircom socket) and then to the dsl modem. so path is clean and direct my end..


here are the stats from the router after reboot

Connection Speed 6144 kbps 512 kbps
Line Attenuation 50 db 15.5 db
Noise Margin 5 db 13 db
l

the downstream attenuation is always around 50/51

Spear

Honda08 wrote: »

i replaced all internal cabling yesterday,
now i have one connection off the main eircom cable , to an eircom ntu ( eircom socket) and then to the dsl modem. so path is clean and direct my end..


here are the stats from the router after reboot

Connection Speed 6144 kbps 512 kbps
Line Attenuation 50 db 15.5 db
Noise Margin 5 db 13 db
l

the downstream attenuation is always around 50/51

Your line is too long, ADSL2 might provide a small improvement, but it'll only be token.

Honda08

Spear wrote: »

Your line is too long, ADSL2 might provide a small improvement, but it'll only be token.

ok got eircom to change the speed to 5mb slight inprovement in noise margin

Connection Speed 5120 kbps 512 kbps
Line Attenuation 50 db 15.5 db
Noise Margin 8 db 12 db

Sponge Bob

How did you 'get them' to nail it on 5mbits , surely not through the front line support muppets ???

Honda08

Sponge Bob wrote: »

How did you 'get them' to nail it on 5mbits , surely not through the front line support muppets ???

business technical support, im on a business 7.6mb 672kb line ....

rang business tech support and they can increase/decrease in 1mb increments..

Sponge Bob

That is interesting, thanks Honda. I do agree with the others on that line. 5mbits is actually damn good for a 50db line and more so if it is rock solid becuase it is nailed at a sustainable speed.

However 50db would be kinda what I would expect at 5-6km not 4km , is the premises old ??

Honda08

Sponge Bob wrote: »

That is interesting, thanks Honda. I do agree with the others on that line. 5mbits is actually damn good for a 50db line and more so if it is rock solid becuase it is nailed at a sustainable speed.

However 50db would be kinda what I would expect at 5-6km not 4km , is the premises old ??

premises is 4 years old.
and 4km from exchange,.. the eircom tech told me i was 3.5 miles from it.
he ran some distance test.

yeah im getting 5.2mb solid modem never looses synch..

nilhg

Honda08 wrote: »

premises is 4 years old.
and 4km from exchange,.. the eircom tech told me i was 3.5 miles from it.
he ran some distance test.

yeah im getting 5.2mb solid modem never looses synch..

3.5 miles is 5.6KM,

Your stats are interesting to me, I'm closer to the exchange than you but getting a worse connection speed, I have a line issue that needs to be cleared up.

Max. DSLAM data rate kBit/s 4096 384
Min. DSLAM data rate kBit/s 3776 384
Attainable data rate kBit/s 8456 1104
Current data rate kBit/s 4096 384

Latency 16 ms 16 ms


Signal-to-noise ratio dB 12 15
Line attenuation dB 49 29
Power cutback dB 0 0

My attenuation used to be 44dB it has slowly crept up to 49dB and there is an audible buzz on the line

Sponge Bob

nilhg wrote: »

3.5 miles is 5.6KM,

So I was right What are your neighbours line stats Honda ??? If they are better then a fault would be very close to the premises...a bit of dirt causing a slight short maybe.

My attenuation used to be 44dB it has slowly crept up to 49dB and there is an audible buzz on the line

Buzz is good because it proves a fault , ring 1901 and report a fault on the voice circuit . Fixing it will improve matters on the data circuit .

I find that audibly scrunching a tayto bag while talking to the rep tends to help your case .

lucernarian

Goes to show how bad/non-standard at best, modems are at calculating attenuation. My home line: 78dB according to eircom. The router: 53.5dB.

But yes, I wouldn't expect a line to get almost to 6 mbps G.dmt, stable on 3.5 miles in a million years. As a matter of fact, I believe if it were that long you wouldn't have been allowed to order a 7.6 mbps business package. They usually don't allow it in residential with similar lines, so I read here. So I am wondering how truthful that 3.5 miles value was, especially as eircom's software seems to deal in db per kilometre not miles.

In effect, I would question the modem's accuracy. I wonder what a friend's/neighbour's would report.


One way or another, I still don't think you'll get a big improvement on a 4 to 5.6 km line with ADSL2+. A megabit or thereabouts as an estimate.