how to find SNR values ????

plasmahal

plasmahal

plasmahal

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I have recently acquired a buffalo airstation turbo g whr-g45s to replace my bt home hub. It comes with a seperate ADSL2+ modem. I've been looking around the settings/system info page of the wireless router logged in as 'root'. What i can't find is the figures for download/upload speed, line attenuation and SNR values. I'm beginning to think that because it has a seperate modem i can't find these figures out but would appreciate an help on this. I need to know this to fight my battle with bt to get upto 512kbps on my broadband. last night (i know it's busy) i only got 96kbps downstream and 375kbps upstream on my option 2 maxadsl package, bit crappy huh ???

2X dial up is not what i want for broadband. My neighbour who is on same package and uses a working home hub gets 576kbps downstream and 288 kbps upstream.

I have a long line to the exchange but my neighbour's is longer (thoeretically).

Also, i have my pc on an ehternet to the airstation and my son's pc on wi-fi, both work fine for accessing the internet but i can't seem to setup file and printer sharing. been through the network setup in win xp and made firewalls are off as far as i can tell but no joy, any ideas???

cheers.
 
I got a reply from buffalo support and these airstation routers don't support that facility...bummer.

That said, I got my replacement home hub yesterday and set it up so here is what is says:

Link Information


Uptime: 2498 days, 5:42:45

Modulation: G.992.1 Annex A

Bandwidth (Up/Down) [kbps/kbps]: 448 / 256

Data Transferred (Sent/Received) [MB/MB]: 1.32 / 3.11

Output Power (Up/Down) [dBm]: 12.0 / 13.0

Line Attenuation (Up/Down) [dB]: 31.5 / 63.5

SN Margin (Up/Down) [dB]: 11.0 / 6.5

Vendor ID (Local/Remote): TMMB / TSTC

Loss of Framing (Local/Remote): 0 / 0

Loss of Signal (Local/Remote): 0 / 0

Loss of Power (Local/Remote): 0 / 0

Loss of Link (Remote): 0

Error Seconds (Local/Remote): 16 / 0

FEC Errors (Up/Down): 0 / 1,140

CRC Errors (Up/Down): 0 / 21

HEC Errors (Up/Down): 0 / 6


Would anyone care to explain any of this and why it would stop me getting a 512k service????????
 
You aren't going to get much (read: any) more than ~256kbps (~30kB/s at best) down.
Usual story though, try connecting at the master socket with no extensions and see if you see an improvement.
 
The hub is plugged directly into the test socket on the master socket, no extension, just 1 dect phone and nothing else. BT have said they have fixed a fault on the line recently but i'm still getting less than my neighbours.

I know for a fact that some people have had a bt engineer at the exchange re-route their line to make it shorter and all copper. There are still lines on the estate that have aluminium and copper and i suspect i need the same tweaking at the exchange.
 
plasmahal said:
I know for a fact that some people have had a bt engineer at the exchange re-route their line to make it shorter and all copper.
Click to expand...

Unless there was a fault with the old pair, that's unlikely.
 
Well yesterday the BT engineer did some cable swapping and fiddling at the exchange and the junction box that enters the estate i'm on and now it's a different story.

Been speed testing since yesterday and it's settled at the following speed:

Test1 comprises of Best Effort Test:
IP profile for your line is - 2000 kbps
DSL connection rate: 448 kbps(UP-STREAM) 2144 kbps(DOWN-STREAM)
Actual IP throughput achieved during the test was - 1762 kbps

A big difference as you see. I was expecting at least 512kbps but fell of my chair when i saw this. Just hope it stays that way.
 
Sorry been busy of late.

My stats according to the home hub are as follows:

DSL Connection

Link Information


Uptime: 0 days, 15:19:04

Modulation: G.992.1 Annex A

Bandwidth (Up/Down) [kbps/kbps]: 448 / 2,304

Data Transferred (Sent/Received) [MB/MB]: 26.78 / 87.10

Output Power (Up/Down) [dBm]: 12.0 / 16.5

Line Attenuation (Up/Down) [dB]: 27.0 / 60.0

SN Margin (Up/Down) [dB]: 17.0 / 7.0

Vendor ID (Local/Remote): TMMB / TSTC

Loss of Framing (Local/Remote): 0 / 0

Loss of Signal (Local/Remote): 66 / 0

Loss of Power (Local/Remote): 0 / 0

Loss of Link (Remote): 0

Error Seconds (Local/Remote): 3,833 / 0

FEC Errors (Up/Down): 0 / 105,017

CRC Errors (Up/Down): 0 / 3,075

HEC Errors (Up/Down): 0 / 2,595


despite the figures my actual throughput is more like 1 mb:

Last Result:
Download Speed: 949 kbps (118.6 KB/sec transfer rate)
Upload Speed: 376 kbps (47 KB/sec transfer rate)

I'm still happy with that as i only expected 512kbps at best but a little confuse as to why my hub is telling i've got 2mb and when ran at 2mb is was stable and reliable....... :confused:
 
You are still "running" at 2Mbps, you're just getting throttled somewhere (either by the BRAS limit, your ISP or simple congestion).
If your sync rate dropped much, you'd probably drop to the 1.5Mbps limit.
 
Last edited:
Improved a little today:

DSL Connection

Link Information


Uptime: 0 days, 6:05:48

Modulation: G.992.1 Annex A

Bandwidth (Up/Down) [kbps/kbps]: 448 / 2,592

Data Transferred (Sent/Received) [MB/MB]: 37.64 / 74.72

Output Power (Up/Down) [dBm]: 12.0 / 17.5

Line Attenuation (Up/Down) [dB]: 27.0 / 60.0

SN Margin (Up/Down) [dB]: 17.0 / 4.5

Vendor ID (Local/Remote): TMMB / TSTC

Loss of Framing (Local/Remote): 0 / 0

Loss of Signal (Local/Remote): 70 / 0

Loss of Power (Local/Remote): 0 / 0

Loss of Link (Remote): 0

Error Seconds (Local/Remote): 4,550 / 0

FEC Errors (Up/Down): 0 / 145,480

CRC Errors (Up/Down): 0 / 833

HEC Errors (Up/Down): 0 / 679

result from speed tester:

Last Result:
Download Speed: 1428 kbps (178.5 KB/sec transfer rate)
Upload Speed: 321 kbps (40.1 KB/sec transfer rate)

I'm still impressed i can mange this speed being 9km from exchange, is there new kit going into exchanges now to bbost broadband ?
 
Your SNR has dropped from 7 to 4.5 for only a 13% increase in headline speed. Its not really an improvement imo.

Try this test, it includes a quality of service test also.

http://www.internetfrog.com/mypc/speedtest/


Heres my info for you to compare, I have a good maxdsl connection but its far from perfect
4clk0vt.jpg



448 / 7712
Uptime = 00:22:00
kBytes Tx/Rx = 643 / 2804
Properties
Output Power (dBm) up/down = 12.0 / 19.5
Attenuation (dB) up/down = 17.0 / 27.0
Noise Margin (dB) up/down = 23.0 / 6.0



.
 
Re the file and printer sharing:

Have you checked both systems are on the same woorkgroup?

Have you shared the drives?
 
Re: the networking.

It seems to work when it feels like it. Even with all firewalls off it networks at it's own will. haven't spent a lot of time experimenting to see what the common factor could be.
 
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