Whats better for my line ADSL2 or ADSL2+

[#1]

I've got it currently setup like this
DSL Type: G.992.5 annex A
Bandwidth (Up/Down) [kbps/kbps]: 888 / 4.184
Output Power (Up/Down) [dBm]: 12,5 / 19,0
Line Attenuation (Up/Down) [dB]: 23,5 / 45,0
SN Margin (Up/Down) [dB]: 12,0 / 13,5

Also... i can't seem to sync above 888/4100-4300 ish  after i got shot down to the 135 profile  and back to normal again i used to get 1060-1109/4300-4800 sync.

[#2]

Hi KyleS,
It is a very fine line between ADSL1 and ADSL2+ at around 4000k, heads or tails really!
Jojo

[#3]

I mean actual G992.3 and G.992.5 not G992.1 (adsl1)
As i've switched between them both and theres no different in sync,throughput or ping for some reason seems a bit strange since when i've switched between then before theres always a decent difference between sync 500kbps ish

[#4]

Quote from: KyleS

SN Margin (Up/Down) [dB]: 12,0 / 13,5

That's more to the point.  Ideal target SNR is around 6.0db and yours is either a high 12db or a low 15db.  Each 3db increment can shave around 800Kbps off of your sync speed.
Plug your router directly into the test socket and repost the stats from your router - I'm interested to see if there is any difference.
B.

[#5]

Given the previous problems reported (135Kbs profile) it looks like the exchange has fixed the min SNR to 12 or 15dB causing a loss of sync. However, it could mean the line is noisy and may not handle ADSL2+ and switching back to ADSL1 (or even trying ADSL2) may help. Until the min SNR is removed you won't see much improvement anyway whatever you do.

[#6]

Quote from: Barry

Quote from: KyleS SN Margin (Up/Down) [dB]: 12,0 / 13,5 Plug your router directly into the test socket and repost the stats from your router - I'm interested to see if there is any difference. B.

Nearly no difference
DSL Type: G.992.3 annex A (i did try 992.5 aswell)
Bandwidth (Up/Down) [kbps/kbps]: 888 / 4.504 (so close to that 4mbps profile also probably better sync due to the time of day)
Data Transferred (Sent/Received) [kB/kB]: 0,00 / 0,00
Output Power (Up/Down) [dBm]: 12,5 / 19,0
Line Attenuation (Up/Down) [dB]: 23,5 / 45,5
SN Margin (Up/Down) [dB]: 12,5 / 12,5
But yeah there was a time when my SNR would settle to like 9db before this carry on with the 135k profile so i think Peter Vaughan may be right about the fixed SNR.
Could ms pilson set a 9db target for me line possibly?