Odd things about BE O2 conections

Any spare snr margin is not shown/hidden
TSNR values are the set to symmetrical values available only in 3db steps ie 3-6-9-12
But show in routers stats as 3.5 6.5 always an extra 0.5db
why are these stats the way they are with be /o2 and not the same with other isp's ,
Has it got something to do with the method used to connect (IPOA)that actually does not work as it was supposed to do ? BTW not trying to have a pop or anything remotely similar ,just curious really

In reply to a post by Anonymous:

Any spare snr margin is not shown/hidden
TSNR values are the set to symmetrical values available only in 3db steps ie 3-6-9-12
But show in routers stats as 3.5 6.5 always an extra 0.5db
why are these stats the way they are with be /o2 and not the same with other isp's ,
Has it got something to do with the method used to connect (IPOA)that actually does not work as it was supposed to do ? BTW not trying to have a pop or anything remotely similar ,just curious really

Any spare margin is used to up the sync speed.

I've always wondered this when I was on O2 but never got any explanation from the O2 gurus here.

In reply to a post by BatBoy:

Any spare margin is used to up the sync speed.

Like this one?

ISP Package............Orange 8M.........O2 8M

Downstream
Speedtest (bps).........7.1M................7.2M
Sync Speed (bps).......8061K..............8187K
Attenuation (dB)........27....................27
SNM (dB)..................22...................6.5
Power (dB)................22...................18

I don't think so!

In reply to a post by XRaySpeX:

In reply to a post by BatBoy:

Any spare margin is used to up the sync speed.

Like this one?

ISP Package............Orange 8M.........O2 8M

Downstream
Speedtest (bps).........7.1M................7.2M
Sync Speed (bps).......8061K..............8187K
Attenuation (dB)........27....................27
SNM (dB)..................22...................6.5
Power (dB)................22...................18

I don't think so!

yeah, it don't add up properly, even for those who can get a 24bit sync will only see what their target snrm no spare if they should have any, the upstream would be the more common out of the two, as a connection that i know used to give 8db spare margin with a sync of almost 1.3mbit before now gets just over 1.4mbit @ 6db no spare margin , attenuation is the same ???

In reply to a post by XRaySpeX:

In reply to a post by BatBoy:

Any spare margin is used to up the sync speed.

Like this one?

ISP Package............Orange 8M.........O2 8M

Downstream
Speedtest (bps).........7.1M................7.2M
Sync Speed (bps).......8061K..............8187K
Attenuation (dB)........27....................27
SNM (dB)..................22...................6.5
Power (dB)................22...................18

I don't think so!

See above

I've already seen! We are not talking about just 125K spare sync.

This is a line that does 16 Meg when it is uncapped from 8 Meg! As you should know from its attn.

Edited by XRaySpeX (Sun 20-Nov-11 21:03:28)

I can see from the power there is a line fault.

Are you talking about the two capped products? I.e.O2 Standard (legacy), and Be Value in both legacy and current versions?

Or something else, such as day-to-day running, where the margin varies as expected.

The 0.5dB immediately after sync I agrre is odd, bur seems to be a differnet, though perhaps related, issue.

What's TSNR? Or am I just having a brain failure?

In reply to a post by RobertoS:

Are you talking about the two capped products?

I know I posted examples above of two 8 Meg capped products, but the same findings held for the uncapped products, if you remember my Orange LLU vs. O2 experiment: http://forums.thinkbroadband.com/general/t/3887249-c...