Thread: SNR and attentuation Test

My line is frequently dropping even the Broadband some times do not connect properly only multiple refreshes it connects. Is there any problem with Attenuation, SNR etc., How to request such test done on my line?

Check in your modem under
Statistics ADSL.

SNR and Line Attenuation values are displayed in (one of) the modem status pages.

This thread should help in your analysis: SNR Margin and Line Attenuation - What do they mean?

This thread should help in how to deal with BSNL in a nice way and get things done (in case there are line problems): My interactions with BSNL

well @ moderator.
Your interactions thread would be helpful to him in Check line errors how?

How about ping test at pingtest.net? My connection is rated 'D'. Is it acceptable rate for my ISP? Should I complain about the connection.

I am submitting results @ pingtest.net
Packet Loss: 0 %
Ping: 110 ms
Jitter: 95 ms
Line Quality: D
MOS: 3.80

Originally Posted by essbebe

Check in your modem under
Statistics ADSL.

here are the stats:


Statistics -- ADSL

Mode: ADSL2+
Line Coding: Trellis On
Status: No Defect
Link Power State: L0

Downstream Upstream
SNR Margin (dB): 34.9 28.9
Attenuation (dB): 18.5 8.0
Output Power (dBm): 12.3 -1.9
Attainable Rate (Kbps): 19369 1245
Rate (Kbps): 1999 493
MSGc (number of bytes in overhead channel message): 64 14
B (number of bytes in Mux Data Frame): 26 46
M (number of Mux Data Frames in FEC Data Frame): 1 1
T (Mux Data Frames over sync bytes): 2 1
R (number of check bytes in FEC Data Frame): 16 14
S (ratio of FEC over PMD Data Frame length): 0.4587 3.2318
L (number of bits in PMD Data Frame): 750 151
D (interleaver depth): 64 8
Delay (msec): 7 6

Super Frames: 7621 3447
Super Frame Errors: 0 0
RS Words: 1067076 68232
RS Correctable Errors: 0 0
RS Uncorrectable Errors: 0 N/A

HEC Errors: 0 0
OCD Errors: 0 0
LCD Errors: 0 0
Total Cells: 577123 490198509
Data Cells: 1269 8236346
Bit Errors: 0 29173

Total ES: 0 1457635
Total SES: 0 1457623
Total UAS: 17 1457611

Originally Posted by Sonali_kapoor

well @ moderator.
Your interactions thread would be helpful to him in Check line errors how?

What I meant (and perhaps this was not clear; apologies BTW) was,

1. Teddy should check SNR/Line Attenuation Values in modem
2. Refer to SNR thread to cross-check values and where he stands.
... and now ...
3. If there are problems with the line, he can revert to BSNL for correcting issues. He can use the second thread as a reference.

Hope this helps.

Originally Posted by teddy

How about ping test at pingtest.net? My connection is rated 'D'. Is it acceptable rate for my ISP? Should I complain about the connection.

I am submitting results @ pingtest.net
Packet Loss: 0 %
Ping: 110 ms
Jitter: 95 ms
Line Quality: D
MOS: 3.80



here are the stats:


Statistics -- ADSL

Mode: ADSL2+
Line Coding: Trellis On
Status: No Defect
Link Power State: L0

Downstream Upstream
SNR Margin (dB): 34.9 28.9
Attenuation (dB): 18.5 8.0
Output Power (dBm): 12.3 -1.9
Attainable Rate (Kbps): 19369 1245
Rate (Kbps): 1999 493
MSGc (number of bytes in overhead channel message): 64 14
B (number of bytes in Mux Data Frame): 26 46
M (number of Mux Data Frames in FEC Data Frame): 1 1
T (Mux Data Frames over sync bytes): 2 1
R (number of check bytes in FEC Data Frame): 16 14
S (ratio of FEC over PMD Data Frame length): 0.4587 3.2318
L (number of bits in PMD Data Frame): 750 151
D (interleaver depth): 64 8
Delay (msec): 7 6

Super Frames: 7621 3447
Super Frame Errors: 0 0
RS Words: 1067076 68232
RS Correctable Errors: 0 0
RS Uncorrectable Errors: 0 N/A

HEC Errors: 0 0
OCD Errors: 0 0
LCD Errors: 0 0
Total Cells: 577123 490198509
Data Cells: 1269 8236346
Bit Errors: 0 29173

Total ES: 0 1457635
Total SES: 0 1457623
Total UAS: 17 1457611

----
@Teddy, your SNR Margin and Line attenuation values are well respectable. There is no problem with the line.

A doubt comes to my mind. Do you have a splitter at the first entry point of the outside telephone line into your house? Telephone and Data circuit must be separated at the very first point. All telephones including parallel lines must be after the splitter.

the line comes from directly from pole to main point from there to Splitter and Splitter to Phone (Only one telephone) and Modem.

I don't think they are accurate values. I doubt the Attenuation value. The exchange is about 2-3 km from my point of connection.

Originally Posted by teddy

the line comes from directly from pole to main point from there to Splitter and Splitter to Phone (Only one telephone) and Modem.

I don't think they are accurate values. I doubt the Attenuation value. The exchange is about 2-3 km from my point of connection.

Modem will not lie.