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Message 1 of 3

ADSL or ADSL2 on a long line?

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i have BT business boadband (office unlimited ADSL2 Next Gen (up to 20 Mb)). Historically i have had poor broadband hence swapping to business to try and improve matters. i have now ditched the home hub and gone to a 7800N which has made a big difference. although over Christmas the flashing lights played havoc with the broadband and now i have a high SNR margin and interleaving..

 

However, my main question is will it be worth me pushing for ADSL2 given my line (stats from DSL stats below). currently my router will only connect with G.DMT so i am assuming i can only get ADSL? Will ADSL2 or indeed 2+ improve speed/stability on a long line with attenuation around 62 dB?

 

thanks everyone

 

DSLAM/MSAN type:                       IFTN:0x71c8 / v0x71c8

Modem/router firmware:            AnnexA version - A2pB025f.d22k

DSL mode:                          G

Status:                 Showtime

Uptime:                               3 days 15 hours 12 min 13 sec

Resyncs:                              1 (since 16 Jan 2015 09:24:44)

                                               

                                                                Downstream      Upstream

Line attenuation (dB):    62.0                        31.5

Signal attenuation (dB):                Not monitored                 

Connection speed (kbps):            2944                       448

SNR margin (dB):              9.7                          9.0

Power (dBm):                    17.8                        12.6

Interleave depth:            16                           4

INP:                       0.65                        1.88

 

RSCorr/RS (%):                  0.0225                   0.0051

RSUnCorr/RS (%):            0.0093                   0.0000

ES/hour:                              0                              0

 

adsl info --stats

adsl: ADSL driver and PHY status

Status: Showtime

Retrain Reason: 8000

Max:    Upstream rate = 688 Kbps, Downstream rate = 3264 Kbps

Channel:        INTR, Upstream rate = 448 Kbps, Downstream rate = 2944 Kbps

 

Link Power State:       L0

Mode:                   G.DMT

TPS-TC:                 ATM Mode

Trellis:                ON

Line Status:            No Defect

Training Status:        Showtime

                Down            Up

SNR (dB):        9.6             9.0

Attn(dB):        62.0            31.5

Pwr(dBm):        17.8            12.6

                        G.dmt framing

K:              93(0)           15

R:              8               16

S:              2               8

😧              16              4

                        Counters

SF:             18470539                18470803

SFErr:          4432            697

RS:             627998338               157001825

RSCorr:         141398          8020

RSUnCorr:       58116           0

 

HEC:            3611            586

OCD:            78              8

LCD:            0               2

Total Cells:    2179945133              0

Data Cells:     84244409                0

Drop Cells:     37

Bit Errors:     0               0

 

ES:             2322            0

SES:            49              0

UAS:            98              98

AS:             314005

 

INP:            0.65            1.88

PER:            1.75            1.75

delay:          8.00            8.00

OR:             32.00           32.00

 

Bitswap:        28562           750

 

Total time = 1 days 19 hours 20 min 38 sec

FEC:            213384          0

CRC:            5918            0

ES:             2322            0

SES:            49              0

UAS:            98              98

LOS:            1               0

LOF:            9               0

Latest 15 minutes time = 5 min 38 sec

FEC:            1740            0

CRC:            36              0

ES:             9               0

SES:            0               0

UAS:            0               0

LOS:            0               0

LOF:            0               0

Previous 15 minutes time = 15 min 0 sec

FEC:            29484           0

CRC:            440             0

ES:             75              0

SES:            1               0

UAS:            0               0

LOS:            0               0

LOF:            0               0

Latest 1 day time = 19 hours 20 min 38 sec

FEC:            57861           0

CRC:            1256            0

ES:             426             0

SES:            9               0

UAS:            0               0

LOS:            0               0

LOF:            0               0

Previous 1 day time = 24 hours 0 sec

FEC:            16164           0

CRC:            422             0

ES:             228             0

SES:            2               0

UAS:            0               0

LOS:            0               0

LOF:            0               0

Since Link time = 3 days 15 hours 13 min 23 sec

FEC:            141398          8020

CRC:            4432            697

ES:             1803            0

SES:            28              0

UAS:            0               0

LOS:            0               0

LOF:            0               0

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Distinguished Sage
Distinguished Sage
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Message 2 of 3

Re: ADSL or ADSL2 on a long line?

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Welcome to the BT Residential Customers forum

 

As you are a business user, please could you may be better posting on the  BT Business forum at http://business.forums.bt.com/

 

 

PS   With that amount of line loss, there would be no advantage in moving to ADSL2 or ADSL2+.

Line attenuation (dB):    62.0  

Estimation of your maximum rate adaptive adsl speed
       
Downstream
Attenuation
dB Approx
Line Length
km
       
 
       
dslMAX (20CN) kbps IP Profile kbps
       
BT 21CN WBC
& adsl2+
kbps IP Profile kbps
       
adsl2+ (LLU) kbps Throughput kbps
       
       

 

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Message 3 of 3

Re: ADSL or ADSL2 on a long line?

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oops thanks!!

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