Thread: My SNR is too high!

My connection is working fine... The speed is about 1.40 to 1.65 mbps.. which is fine but look at these values...
Line Rate 38583
Tx Cell Transmitted 0
Rx Cell Received 0
Cbr_CPS 0
Rvbr SCR_CPS 0
Vbr SCR_CPS 0
Rvbr PCR_CPS 0
Vbr PCR_CPS 0
Ubr_CPS 11268
Ubr MCR_CPS 0
CACMode Simple
CACFunction 0x2002a4cc
Port Speed Hook 0x00000000
Vpi Range 8
Vci Range 16
Default Pcr 0
Traffic Shaping false
Ni Type uni
Is Dsl Dma Up 1
Enabled Channels 4
Driver Version 1.75
APIVersion GS_API_626
Firmware Version E.37.7.37
Dsp Version 0x00000090
Common Handshake Disable
Connected true
Operational Mode G.Dmt.BisPlus
State Showtime
Watchdog 0x00000053
Operation Progress 0x00000000
Last Failed 0x00000000
Tx Bit Rate 796400
Rx Bit Rate 1907100
Rx ATTNDR 2544000
Code Type Status AnnexA
Tx Cell Rate 1878
Rx Cell Rate 4497
Phy TXCell Count 39532
Phy RXCell Count 151933
Phy Cell Drop Count 1
Overall Failure 0
Data Boost Disable
Local ITUCountry Code 0x0000b5ff
Local SEF 0
Local End LOS 0
Local SNRMargin 10.0 dB
Local Line Attn 58.5 dB
INPup 0.75
INPdown 1.0
PMstatus L0
Raw Attn 0.0 dB
Local Tx Power 12.1 dB
Local Fast Channel Rx Rate 0
Local Fast Channel Tx Rate 0
Local Fast Channel FEC 0
Local Fast Channel CRC 0
Local Fast Channel HEC 0
Local Fast Channel NCD 0
Local Fast Channel OCD 0
Local Interleaved Channel Rx Rate 1907100
Local Interleaved Channel Tx Rate 796400
Local Interleaved Channel FEC 0
Local Interleaved Channel CRC 0
Local Interleaved Channel HEC 0
Local Interleaved Channel NCD 0
Local Interleaved Channel OCD 0
Remote Tx Power 20.5 dB
Remote SEF 0
Remote LOS 0
Remote Line Attn 43.5 dB
Remote SNRMargin 6.0 dB
Remote Fast Channel FEC 0
Remote Fast Channel CRC 0
Remote Fast Channel HEC 0
Remote Fast Channel NCD 0
Remote Interleaved Channel FEC 0
Remote Interleaved Channel CRC 0
Remote Interleaved Channel HEC 0
Remote Interleaved Channel NCD 0
Local Mgmt FEC0 3196
Local Mgmt CRC0 39
Local Mgmt FECErrored Sec 372
Local Mgmt Errored Sec 18
Local Mgmt Severely Errored Sec 0
Local Mgmt LOSErrored Sec 0
Local Mgmt Unavail Errored Sec 0
Local Mgmt HEC0 101
Remote Mgmt FEC0 85444
Remote Mgmt CRC0 1509
Remote Mgmt FECErrored Sec 1240
Remote Mgmt Errored Sec 7314500
Remote Mgmt Severely Errored Sec 7313968
Remote Mgmt LOSErrored Sec 7313322
Remote Mgmt Unavail Errored Sec 7313860
Remote Mgmt HEC0 39731
Local TPSTCCell0 6448175
Local TPSTCCell0Upper Layer 151933
Local TPSTCBit Error 0
Remote TPSTCCell0 238079201
Remote TPSTCCell0Upper Layer 3053147
Remote TPSTCBit Error 3083489
PSDMask Status Standard
Status Fail Count 0
Profile Status MAIN
Action Startup
Activate Line None
Line Status false
Host Control Enable
Auto Start true
Failsafe false
Showtime Led 2
Retrain EnableOverallOnly
Defaults None
Line Mode None
Whip Disable
Whip Active Inactive
Happy Mode Enable
PMmode L2L3Allowed
Dying Gasp Enable
Utopia Interface Level1
Physical Port 0
Clock Type Oscillator
Profile MAIN
Detect Noise Disable
Max Interleave D 64
SHalf Disable
Cabinet Mode Disable
PSDMask NonOvlp-M1
Standard G.Dmt.BisPlusAuto
Ec Fdm Mode EC
Max Bits Per Bin 15
Tx Start Bin 6
Tx End Bin 31
Rx Start Bin 6
Rx End Bin 511
Rx Auto Bin Adjust Disable
Tx Attenuation Bis_0DB
Bit Swap Enable
Bit Swap Up Enable
NTRMode Disable
Code Type ADSL2A
Max Down Rate 511
Capability BIS+/BIS/GDMT/T1413
Coding Gain auto
Framer Type Type3ET
Fast Retrain Enable
Reset Defaults false
Port Snmp If Index 0
Port Snmp If Type 0

Originally Posted by Sumit020

My connection is working fine... The speed is about 1.40 to 1.65 mbps.. which is fine but look at these values...

Local SNRMargin 10.0 dB
Local Line Attn 58.5 dB

The SNR should be higher than 20 though anything above 10 is just enough. The Attenuation should be as low as possible. But if the attenuation starts going higher than 40 and SNR going down below 10, it is time to complain about the line condition.

Check the Wires

The leading-in cable (drop wire) from the junction box (DP box) to your house should be as straight as possible, should be of a single length without any joints. The wires should not be coiled anywhere and should be away from electrical lines. With these types of irregularities, i.e with joints or coiled or near power cables, your phone might work fine but the DSL link may not hold and work satisfactorily.

Splitters and Parallel telephones

Never by-pass the splitter. The splitter does the job of separating the high frequency ADSL signals from low frequency telephone signals. If the splitter is not installed correctly, the broadband connection is likely to go down every time the phone rings. Any parallel phone connections should be after the splitter and not before it. The line from the exchange should first enter into the splitter’s Line jack. The phone should be connected only to the phone jack of the splitter. The ADSL modem should be connected to the modem/DSD jack of the splitter. A two way jack may be connected to this phone jack to install your parallel telephones. The wire leading into the modem should not be running parallel or close to electrical wiring.

Originally Posted by deepmohan

The SNR should be higher than 20 though anything above 10 is just enough. The Attenuation should be as low as possible. But if the attenuation starts going higher than 40 and SNR going down below 10, it is time to complain about the line condition.

I have complained yesterday, they told me they have changed the line...
After that ph. started to work fine... but SNR value decreased from 12.5 to 10
Attenuation increased from 57.5 to 60....
What I do?

Originally Posted by Sumit020

I have complained yesterday, they told me they have changed the line...
After that ph. started to work fine... but SNR value decreased from 12.5 to 10
Attenuation increased from 57.5 to 60....
What I do?

seek for a copper cable pair change. It would help in most cases. btw, how far are you from telephone exchange? if you have more of open wire {now a days not possible,} ensure that you get the joints in the line cleaned up. the service wire may have some joints, you may have parallel phones before the splitter
you may also try for a change of splitter.

See mine but I am getting full speed always:

Rate (Kbps) 2048 512
SNR Margin (dB) 8.2 16.0
Attenuation (dB) 58.0 31.5
Attainable Rate (Kbps): 3968 1112