What's Your SNR Ratio and Attenuation Rates? (BSNL Broadband)

[naveen_reloaded]

http://img300.imageshack.us/img300/246/snrattm.jpg

http://img300.imageshack.us/img300/246/snrattm.jpg

USE ADSL splitter for each extension phone.

this is a excellent table ... thanks essbebe ... always helpful !!:angel_not:

MY VALUES :

SNR Margin (dB): 30.2 / 30.0
Attenuation (dB): 12.0 / 6.0

 

[geek]

these are line test values when only ADSL2+ mode enabled.

SNR Margin (dB): 32.4 21.0 (d/s u/s)
Attenuation (dB): 27.5 10.0
Output Power (dBm): 12.4 0.8
Attainable Rate (Kbps): 14440 588

@naveen , @essbebe : Why are my line attenuation values so high ? I read in whirlpool forums that the line attenuation per kilometer of line is about 13.5 dB ?? (Mine seems to be in conformity with that. My line runs for ~2 Kms).
What can I do to reduce Attenuation/Noise and increase Signal ?


Why is u/s signal & rate so low ?

 

[geek]

--- ---- ---- ---

below are test values when only G.DMT(ADSL1) mode is enabled. (atten. still high ?)

SNR Margin (dB): 31.9 24.0 (d/s u/s)
Attenuation (dB): 24.0 11.0
Output Power (dBm): 12.5 16.6
Attainable Rate (Kbps): 7936 1120

 

[geek]

and then sometimes, this happens.

ADSL2 mode.

SNR Margin (dB): 7.6 5.1 (d/s u/s)
Attenuation (dB): 51.5 52.9
Output Power (dBm): 11.8 17.6
Attainable Rate (Kbps): 1800 280



Restarted the modem and it changed to

Mode: ADSL2+


SNR Margin (dB): 35.0 23.0 (d/s u/s)
Attenuation (dB): 27.5 10.1
Output Power (dBm): 12.2 -25.6
Attainable Rate (Kbps): 15352 584


dont get it !!!

 

[rocky007]

[TABLE="class: mainContentTable"]
[TR]
[TD="class: tableheader"]Item[/TD]
[TD="class: tableheader"]Downstream[/TD]
[TD="class: tableheader"]Upstream[/TD]
[TD="class: tableheader"]Unit[/TD]
[/TR]
[TR]
[TD="class: alignleft"]SNR Margin[/TD]
[TD="class: alignleft"]9.5db[/TD]
[TD="class: alignleft"]24.0db[/TD]
[TD="class: alignleft"]dB[/TD]
[/TR]
[TR]
[TD="class: alignleft"]Line Attenuation[/TD]
[TD="class: alignleft"]10.5db[/TD]
[TD="class: alignleft"]8.5db[/TD]
[TD="class: alignleft"]dB[/TD]
[/TR]
[TR]
[TD="class: alignleft"]Loss of Signal[/TD]
[TD="class: alignleft"]0[/TD]
[TD="class: alignleft"]0[/TD]
[TD="class: alignleft"][/TD]
[/TR]
[TR]
[TD="class: alignleft"]CRC Errors[/TD]
[TD="class: alignleft"]47[/TD]
[TD="class: alignleft"]4[/TD]
[TD="class: alignleft"][/TD]
[/TR]
[TR]
[TD="class: alignleft"]Data Rate[/TD]
[TD="class: alignleft"]6400 Kbps[/TD]
[TD="class: alignleft"]512 Kbps[/TD]
[TD="class: alignleft"]kbps[/TD]
[/TR]
[TR]
[TD="class: alignleft"]Latency[/TD]
[TD="class: alignleft"]Interleaved[/TD]
[TD="class: alignleft"]Interleaved[/TD]
[/TR]
[/TABLE]


Connection Plan: BSNL BB Home Combo Unlimited 625 ( 256 Kbps Unlimited)

https://www.speedtest.net

 

[zerosleeping]

Airtel 1Mbps Connection

[TABLE="width: 550"]
[TR]
[TD="class: tablerowheader"]Operation Mode[/TD]
[TD="class: tablerowvalue"]ADSL[/TD]
[/TR]
[TR]
[TD="class: tablerowheader"]Max. Bandwidth Down/Up(kbps)[/TD]
[TD="class: tablecolvalue, width: 50%"]11712 / 1224[/TD]
[/TR]
[TR]
[TD="class: tablerowheader"]Bandwidth Down/Up(kbps)[/TD]
[TD="class: tablecolvalue, width: 50%"]2464 / 1024[/TD]
[/TR]
[TR]
[TD="class: tablerowheader"]SNR Margin Down/Up(dB)[/TD]
[TD="class: tablecolvalue"]25.0 / 8.0[/TD]
[/TR]
[TR]
[TD="class: tablerowheader"]Attenuation Down/Up(dB)[/TD]
[TD="class: tablecolvalue"]20.0 / 13.0[/TD]
[/TR]
[TR]
[TD="class: tablerowheader"]Power Down/Up(dBm)[/TD]
[TD="class: tablerowvalue"]-2.0 / 11.5[/TD]
[/TR]
[/TABLE]


BNSL 750UL+

[TABLE="class: mainContentTable, align: center"]
[TR]
[TD="bgcolor: #CCCCCC, colspan: 4, align: center"]ADSL Line Status[/TD]
[/TR]
[TR]
[TD]ADSL State[/TD]
[TD]Show Time
[/TD]
[TD]Data Path[/TD]
[TD]Interleave
[/TD]
[/TR]
[TR]
[TD]DSP Version[/TD]
[TD]D.57.2.17[/TD]
[TD]Operation Mode[/TD]
[TD]G.DMT
[/TD]
[/TR]
[TR]
[TD]Output Power[/TD]
[TD]10.3 dB
[/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR="bgcolor: #CCCCCC"]
[TD="colspan: 2, align: center"]Upstream[/TD]
[TD="colspan: 2, align: center"]DownStream[/TD]
[/TR]
[TR]
[TD]ADSL Link Speed[/TD]
[TD]640 Kbps
[/TD]
[TD]ADSL Link Speed[/TD]
[TD]2048 Kbps
[/TD]
[/TR]
[TR]
[TD]Previous Tx-Rate[/TD]
[TD]0 Kbps
[/TD]
[TD]Previous Rx-Rate[/TD]
[TD]0 Kbps
[/TD]
[/TR]
[TR]
[TD]SNR[/TD]
[TD]22 dB
[/TD]
[TD]SNR[/TD]
[TD]38.0 dB
[/TD]
[/TR]
[TR]
[TD]CRC[/TD]
[TD][/TD]
[TD]CRC[/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Attenuation[/TD]
[TD]5.0 dB
[/TD]
[TD]Attenuation[/TD]
[TD]7.5 dB
[/TD]
[/TR]
[/TABLE]

 

[Gautam Varghese Jose]

Guys chk ma values itz d worst..Downlink SNR : 7dB+/- Attenuation:52dB+Wastn money on a 4Mbps bsnl connectn

 

[fath152]

I am having dataone connection ul750 plan . web browsing is ok, but I am getting big noises while using Skype Video calls. when i am checking the noise marginsupstream noise margin = 1542.7db, downstream noise margin=12.0dbattenuation upstream = 1542.7db , downstream attenuation = 48.9db.Our location is around 3km from telephone exchange, But near to national highway NH47, is these rates are good enough.

 

[essbebe]

Data given appears incorrect.
upstream noise margin = 1542.7db, upstream Attenuation = 1542.7db (*wrong data?)
downstream noise margin=12.0db downstream Attenuation = 48.9db. (*high)
http://img300.imageshack.us/img300/246/snrattm.jpg

Give details of your modem/model/make/number
Check quality of your connection here.
VOIP Speed Test