Recently I switched from a plusnet where I synced at 7616, and had a loop attenuation of 25dB. Now I am on LLU, but my attenuation seems to have jumped to a rather stupidly high 49dB, thus meaning I am not syncing much faster, and it also means my line is now over 32 times worse than it was before?

Initial "guesses" where the line should sync around 13mbps, not a mankly 8mbps :'(

Samknows reports my line as 0.8km long (as the crowflies), so I know it is longer than that, but I am sure it does not route to france and back!

Could the engineer who moved my line to the LLU equipment have gaffed it up?

Thanks :-)

Edited 24 October, 201015 yr by mbames

Well it will be a combination of factors including the carrier that the ADSL2+ is running on, their equipment and the line itself.

I'd have a go at your LLU provider first and see what they come back with as their excuse.

My LLU provider says it is fine, and there are no faults on the line.

I am going to try with a variety of other routers/modems and see what figures they report, before I can I work out of a plan of action/ask for help!

Just tried with my old Cisco 837 (actually connected with it at the moment), even though it is a non ADSL2 device, is is reporting:

cisco_gw#show dsl int ATM 0

ATU-R (DS) ATU-C (US)

Modem Status: Showtime (DMTDSL_SHOWTIME)

DSL Mode: ITU G.992.1 (G.DMT)

ITU STD NUM: 0x01 0x01

Vendor ID: 'ALCB' 'BDCM'

Vendor Specific: 0x0000 0xA189

Vendor Country: 0x00 0xB5

Capacity Used: 88% 93%

Noise Margin: 11.5 dB 9.0 dB

Output Power: 20.0 dBm 12.0 dBm

Attenuation: 25.5 dB 16.5 dB

Defect Status: None None

Last Fail Code: None

Selftest Result: 0x00

Subfunction: 0x15

Interrupts: 1281 (2 spurious)

Activations: 1

Init FW: embedded

Operartion FW: embedded

SW Version: 3.9.220

FW Version: 0x1A04

Stats from my 660:

P660R-61C> wan adsl linedata near

noise margin downstream: 16 db

output power upstream: 7 db

attenuation downstream: 26 db

P660R-61C> wan adsl linedata far

noise margin upstream: 14 db

output power downstream: 18 db

attenuation upstream: 14 db

Upstream Speed: 797 kbps

Downstream Speed: 7548 kbps

Stats from my Vigor 2800:

> adsl status

--------------------------- ATU-R Info (annex A) ----------------------------

Running Mode : ADSL2+ State : SHOWTIME

DS Actual Rate : 8188400 bps US Actual Rate : 796100 bps

DS maximum Rate : 8188400 bps US maximum Rate : 796100 bps

DS Path Mode : Interleave US Path Mode : Interleave

NE Current Attenuation : 24.0 dB Cur SNR Margin : 14.5 dB

DS actual PSDM© : 00000000 US actual PSDM® : 00000000

ADSL Firmware Version : E.38.2.23

-------------------------------- ATU-C Info ---------------------------------

Far Current Attenuation : 15.0 dB Far SNR Margin : 25.0 dB

CO ITU Version[0] : 00000000 CO ITU Version[1] : 00000000

DSLAM CHIPSET VENDOR : < Unknown >

-----------------------------------------------------------------------------

INTL, DSTREAM bytes/depth= 0, symbols/codewords = 0, latency= 0*0.25ms.

, USTREAM bytes/depth= 0, symbols/codewords = 0, latency= 0*0.25ms.

CODE, DSTREAM fast parity bytes= 0, fast codeword= 0.

DSTREAM intl parity bytes= 0, intl codeword= 0.

CODE, USTREAM fast parity bytes= 0, fast codeword= 0.

USTREAM intl parity bytes= 0, intl codeword= 0.

Setting>>

FDQ : Enable, TCM : Enable, EC : Disable, Framing Mode : 3.

Running>>

FDQ : Off, TCM : Off, EC : Off.

DS : Framing Mode 3, US : Framing Mode 3.

ADI ADSL Firmware Version: E.38.2.23

However the Stupid/cheap/nasty Sky Router (sagem PoS) is reporting -> 49.5dB down :'(

Edited 25 October, 201015 yr by mbames

Just tried with my old Cisco 837 (actually connected with it at the moment), even though it is a non ADSL2 device, is is reporting:

Stats from my 660:

Stats from my Vigor 2800:

However the Stupid/cheap/nasty Sky Router (sagem PoS) is reporting -> 49.5dB down :'(

Ohh, right yes, well a **** router won't help :(

Looks like you might want to buy a better router if it's something you can afford.

Phone Sky this morning, and spoke to someone with brain. He immediately tweaked something and my disconnection dropped and reconnected at 15mbps. I did say I was using my own router as the Sky one was broken, so he is sending me out a new router too. I have a Vigor 2820 on order too...... :p