SNR Margin & Line Attenuation Rate - What does your stats mean.

[Kalyan_1980]

@InkTone , My plan was 10mbps and now I changed to 20 mbps. But the speed was not increased. Today I raise a complaint in my exchange, the guy told me that if the speed is increased, you will get frequent disconnect, since the exchange is too far.
Any how he increased the speed, I have to check and update the status to exchange.
If frequent disconnect, then they will reduce the speed to 10 mbps.

 

[InkTone]

@Kalyan_1980 what the exchange person told is right when speed increases the SNR changes. a lower SNR gives an instable connection if you are far from exchange.since you are having a big variation in SNR values as you mentioned ask the line man to check your line.

 

[Kalyan_1980]

Hi @InkTone, i have checked the speed in my connection. They have increased to 12mbps.

Internet Connection
DSL Status Connected
Downstream Data Rate 12797 kbps
Upstream Data Rate 636 kbps
Max Att Downstream Rate 18704 kbps
Max Att Upstream Rate 1177 kbps
SNR (Downstream) 14.95 dB
SNR (Upstream) 22.0 dB
Line Attentuation(Downstream) 22.0 dB
Line Attentuation(Upstream) 13.0 dB

 

[InkTone]

is your SNR stable?
if yes then i think your line can withstand some more increase in speed about 15 mbps.
the recommended SNR value is 10 and above by BSNL

 

[Kalyan_1980]

Yes, its maintain around 14.8. Need to track couple of days.

 

[InkTone]

@Kalyan_1980 14+ is fine you can increase a couple of more mbps till SNR reaches 10. like you said, check for a few more days and see how your present SNR behaves then change if you wish. check SNR during evening time .i noticed that its during that time the SNR drops low.

 

[Kalyan_1980]

Hi @InkTone , today evening my SNR was very low . Now i am getting 10mbps only. I think its hard to increase to 14 mbps.

SNR (Downstream)5.50 dB

 

[InkTone]

hmm. better you keep the line rate as it is. but if possible please check your line. i dont understand why such a big variation happens. for me the values changes to -2 or 3 dB only from normal. or check with a new modem and splitter to see if there is change in SNR values.

@Kalyan_1980

 

[Kalyan_1980]

@InkTone , but morning it was ok. My modem is 8 years old, so need to change now?

SNR (Downstream) 15.20 dB

 

[InkTone]

@Kalyan_1980 an old modem can show a low SNR margin. i am having the same issue. if you can get a modem from your friend and check how SNR behaves. if youare friends with the line man in your area then he can help you by placing a test modem to check your SNR.
There are many factors that affect SNR a faulty or old modem, the modem adapter, spliter, even the drop wire, rusty joins, phone pair coming from exchange to your home, port you are on. many many factors.

By the what is your Attenuation rate ??