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Question of the Day: If you were buying a TV today, which brand would you choose?
Understanding SNR and Attenuation Rates
- Thread starter Mineer
- Start date
Johnatan56
Honorary Master
Last edited:
Johnatan56
Honorary Master
Could you post your line stats, specifically on what path it is? Would you mind looking for the word "interleaved"? I assume it was this.
If your line was stable/you game, I would suggest you get TelkomZA to set you back to fast path.
squirrel
Expert Member
- Joined
- Jun 11, 2005
- Messages
- 2,165
- Reaction score
- 182
Speedtest reports ~9.6mbps
Should the interleaved be changed to fastpath? I'm on 10mbps ADSL, signed up for 20mbps VDSL but couldn't get it. Was wondering if I could get somewhere in the middle (15mbps?)
DSL modulation
ITU G.992.5(ADSL2PLUS)
ANNEX Mode
ANNEX A
Current Profile
N/A
TCM(Trellis Coded Modulation)
1
Line Stats Downstream Upstream
SNR
17.4 dB
10.3 dB
Line Attenuation
17.1 dB
10.5 dB
Path Mode
Interleaved (this is for downstream)
FastPath (this is for upstream)
Interleave Depth
32
1
Data Rate
12480 kbps
1020 kbps
MAX Rate
21152
1128
POWER
0.0 dbm
11.3 dbm
CRC
534
0
Should the interleaved be changed to fastpath? I'm on 10mbps ADSL, signed up for 20mbps VDSL but couldn't get it. Was wondering if I could get somewhere in the middle (15mbps?)
DSL modulation
ITU G.992.5(ADSL2PLUS)
ANNEX Mode
ANNEX A
Current Profile
N/A
TCM(Trellis Coded Modulation)
1
Line Stats Downstream Upstream
SNR
17.4 dB
10.3 dB
Line Attenuation
17.1 dB
10.5 dB
Path Mode
Interleaved (this is for downstream)
FastPath (this is for upstream)
Interleave Depth
32
1
Data Rate
12480 kbps
1020 kbps
MAX Rate
21152
1128
POWER
0.0 dbm
11.3 dbm
CRC
534
0
Last edited:
The quality of my line stats has dropped recently. I previously had SNR > 29dB and max rate = 20Mbps. These are my current stats:
DSL Modulation ITU G.992.5(ADSL2PLUS)
ANNEX Mode ANNEX A
SNR Down 13.8 dB
SNR Up 10.8 dB
Line Attenuation Down 30.8 dB
Line Attenuation Up 16.7 dB
Path Mode Interleaved
Data Rate Down 10239 kbps
Data Rate Up 1022 kbps
MAX Rate Down 14652 kbps
MAX Rate Up 1143 kbps
POWER Down 18.8 dbm
POWER Up 11.3 dbm
CRC Down 0
CRC Up 0
How can I get the line quality improved? Log a line fault?
DSL Modulation ITU G.992.5(ADSL2PLUS)
ANNEX Mode ANNEX A
SNR Down 13.8 dB
SNR Up 10.8 dB
Line Attenuation Down 30.8 dB
Line Attenuation Up 16.7 dB
Path Mode Interleaved
Data Rate Down 10239 kbps
Data Rate Up 1022 kbps
MAX Rate Down 14652 kbps
MAX Rate Up 1143 kbps
POWER Down 18.8 dbm
POWER Up 11.3 dbm
CRC Down 0
CRC Up 0
How can I get the line quality improved? Log a line fault?
Johnatan56
Honorary Master
You most likely want to get your line set back to fast path rather than interleaved, message TelkomZA.
Also ask him about it.
But it's always been on interleaved. I'll try PMing TelkomZA.
TOTO LINK ND300
23H47 - ADSL2+
00H09 - ADSL2
23H47 - ADSL2+
Code:
Adsl Line Status SHOWTIME.L0
Adsl Mode G992.5
Up Stream 508 kbps
Down Stream 7167 kbps
Attenuation Down Stream 27
Attenuation Up Stream 17
SNR Margin Down Stream 19.0
SNR Margin Up Stream 24.400H09 - ADSL2
Code:
Adsl Line Status SHOWTIME.L0
Adsl Mode G992.3
Up Stream 508 kbps
Down Stream 7167 kbps
Attenuation Down Stream 27
Attenuation Up Stream 17
SNR Margin Down Stream 14.6
SNR Margin Up Stream 24.4Johnatan56
Honorary Master
You should be at 8mbps with those stats, why are you at 7Mbps? (Assuming you are paying for 8Mbps).
i'm suppose to be on 10 Mbps.. but it was Unstable according to Telkom... Downgraded from 10 > 9 > 8 > 7 ... 6 > 7
Johnatan56
Honorary Master
No you should have 10Mbps easily. At 27 attenuation you should be fine. I have 40 dB attenuation and I still sync 10Mbps stably.
Yup that is the Problem Line was installed Synced at 10 / 1 Mbps easily for the whole of Jan
Storm came in Feb and it started dropping, Telkom says nothing higher than 7 Mbps possible..
Johnatan56
Honorary Master
Have posted and Pm'ed No Response...
GrammatonCleric
Well-Known Member
I wouldn't rely on TelkomZA to help with anything. All they ever say is they've escalated your request to the correct department and you should get feedback sometime in the 100 years!
My line also went from 16.8-meg to 14.4-meg...now I'm sitting on 7.7-meg. It's a 20-meg line. If I downgrade to 10-meg, I might only get 2-megs out of it
My line also went from 16.8-meg to 14.4-meg...now I'm sitting on 7.7-meg. It's a 20-meg line. If I downgrade to 10-meg, I might only get 2-megs out of it
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I wouldn't rely on TelkomZA to help with anything. All they ever say is they've escalated your request to the correct department and you should get feedback sometime in the 100 years!
My line also went from 16.8-meg to 14.4-meg...now I'm sitting on 7.7-meg. It's a 20-meg line. If I downgrade to 10-meg, I might only get 2-megs out of it
Finally got a Response, will see what come from investigation so far it seems that there is some Physical Layer issues, "Un balanced Pair"
Geoff.D
Honorary Master
Finally got a Response, will see what come from investigation so far it seems that there is some Physical Layer issues, "Un balanced Pair"
Split pair makes more sense ..... caused when the two conductors of a pair get separated from each other and then mixed up with other pairs that have been split.
Typically happens when someone is not skilled enough to work on multi pair cables. Can be quite difficult to correct. Typically happens when a cable jointer is rushed or interrupted in his task .....
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