Attenuation!

[Charl101]

Hi guys.

Ok so i came across this thread

http://mybroadband.co.za/vb/showthr...uation-Rates?p=3100772&viewfull=1#post3100772

about SnR and attenuation "which i know very little about" and decided to check what my SnR/attenuation margins are!
So on my D-Link 2750u router i went to status/statistics and found this

Mode: ADSL_G.dmt
Type: ATM
Status: Up

Downstream Upstream
Line Coding(Trellis): On On
SNR Margin (dB): 243 130
Attenuation (dB): 235 145
Output Power (dBm): 79 59
Attainable Rate (Kbps): 10720 988
Rate (Kbps): 4096 512
D (interleaver depth): 1 1
Delay (msec): 0.13 0.25

HEC Errors: 0 0
OCD Errors: 0 0
LCD Errors: 0 0

Total ES: 0 0

From my understanding, my SnR seems to be on a good level, which stated on that thread mentioned above should be anything above 29db which is outstanding. But, when i looked at my attenuation, that is suppose to be below 60db,mine is 235db downstream and 145db upstream. So now i would just like to know am i missing something here? or is my attenuation just really bad and should i call telkom to check it out?

Btw: Using an 4meg uncapped account and my ISP is Telkom

 

[MickZA]

The 2750u stats are missing a decimal point in the dB values thus:

SNR Margin (dB): 24.3 13.0
Attenuation (dB): 23.5 14.5
Output Power (dBm): 7.9 5.9

... your stats are fine.

 

[Charl101]

Lol. Thanks

 

[cavedog]

Yup and since you are G.dmt mode your stats will improve if you are ever moved to ADSL2+

 

[Charl101]

What is ADSL2+ ? Never heard of that before

 

[Johnatan56]

What is ADSL2+ ? Never heard of that before

Version Standard name Common name Downstream rate Upstream rate Approved in
ADSL ANSI T1.413-1998 Issue 2 ADSL 8.0 Mbit/s 1.0 Mbit/s 1998
ADSL ITU G.992.1 ADSL (G.dmt) 8.0 Mbit/s 1.3 Mbit/s 1999-07
ADSL ITU G.992.1 Annex A ADSL over POTS 12.0 Mbit/s 1.3 Mbit/s 2001
ADSL ITU G.992.1 Annex B ADSL over ISDN 12.0 Mbit/s 1.8 Mbit/s 2005
ADSL ITU G.992.2 ADSL Lite (G.lite) 1.5 Mbit/s 0.5 Mbit/s 1999-07
ADSL2 ITU G.992.3 ADSL2 12.0 Mbit/s 1.3 Mbit/s 2002-07
ADSL2 ITU G.992.3 Annex J ADSL2 12.0 Mbit/s 3.5 Mbit/s
ADSL2 ITU G.992.3 Annex L RE-ADSL2 5.0 Mbit/s 0.8 Mbit/s
ADSL2 ITU G.992.4 splitterless ADSL2 1.5 Mbit/s 0.5 Mbit/s 2002-07
ADSL2+ ITU G.992.5 ADSL2+ 24.0 Mbit/s 1.4 Mbit/s 2003-05
ADSL2+ ITU G.992.5 Annex M ADSL2+M 24.0 Mbit/s 3.3 Mbit/s 2008
ADSL2++ (up to 3.75 MHz) ADSL4 52.0 Mbit/s ? 5.0 Mbit/s ? In development

Proper table at wikipedia: http://en.wikipedia.org/wiki/Asymmetric_digital_subscriber_line
Check ADSL standards.
Basically ADSL2+ is a newer version of ADSL, it's faster.