In reply to a post by DougM:

FYI, you can get your line's current IP profile (approx. 97% of sync) from this site:
http://windows.mouselike.org/be/index.asp?DoAction=B...

Not sure if it works for those who are "LLU", which includes Sky and TalkTalk fibre products.

I'm on BT Infinity 2 and get:

The current Downstream BRAS rate is: 51.1 Mbps
The current Upstream BRAS rate is: 20 Mbps

As I have an unlocked HG612 modem, my sync stats right now are 52893 kbps / 9598 kbps. My theoretical maximum would be 60132 / 9725.

Back in September 2012 after installation I was syncing at 49912 / 12065 and the theoretical max was 59448 / 11957 - so I've seen a drop in upload and an increase in upload. I suspect that's more to do with changes to the HG612 firmware than anything on the line!

( Speedtest on this site shows 48.8 Mbps download and 8.9 Mbps upload:
http://www.thinkbroadband.com/speedtest/results.html... )

Edited by jchamier (Fri 03-Jan-14 20:40:14)

In reply to a post by adslmax:

Virgin Media Cable isn't affect by any general electrical noise nor tacky Christmas lights on. BT had never learn from it for the last 25 years!

Rubbish.

In reply to a post by jchamier:

Not sure if it works for those who are "LLU", which includes Sky and TalkTalk fibre products.

I'm on BT Infinity 2 and get:

The current Downstream BRAS rate is: 51.1 Mbps
The current Upstream BRAS rate is: 20 Mbps

It can't. Sky / TalkTalk don't have an IP Profile to be obtained.

As an aside having a second line installed and enabled for FTTC imminently. Anyone done thing, and how much of a performance hit did you note on the original line?

Just a little more information.

http://www.jdsu.com/productliterature/sda_app_note3_...
https://en.wikipedia.org/wiki/Ingress_(signal_leakag...
http://piedmontscte.org/resources/SCTE+Piedmont$2C+N...
http://www.cascaderange.org/presentations/Return_Pat...

I especially like this part:

Ingress is the most common problem that operators of two-way services are struggling with

Along with this part:

Common Sources of Ingress
 Off Air

� Short Wave Radio (4.75 to 10 MHz)
� Ham Operators (7, 10, 14, 18, 21, 24 & 28 MHz)
� CB Radios (27 MHz)
� Broadband noise (things with electric motors, PCs, etc)
� Impulse Noise (shorts bursts of Broadband noise)

 Plant Induced

� Common Path Distortion (6MHz beats across entire spectrum)
� Transient Hum Modulation
� Excessive Gain

 Subscriber Induced

� Direct Pickup
� Malfunctioning Subscriber Devices
� Broadband noise from appliances
� Self Installs

Cable actually has to be more careful than BT about various things as there's no rate adaption on cable and there's active components out in the field, it's not just converting optical to electrical and done, there's amplification, attenuation and balancing of the two versus SNR to do, amongst other things.

In reply to a post by Ignitionnet:

It can't. Sky / TalkTalk don't have an IP Profile to be obtained.

I understand why Sky doesn't, they're the only ISP on the network, but I thought TalkTalk did wholesale services to other ISPs - and that was the reason I was given for BT having the profile in the first place?

In reply to a post by jchamier:

I understand why Sky doesn't, they're the only ISP on the network, but I thought TalkTalk did wholesale services to other ISPs - and that was the reason I was given for BT having the profile in the first place?

TalkTalk will be keeping track of connected speeds but they don't use an IP Profile in the manner BT Wholesale do. IP Profile is a BT-ism.

In reply to a post by Ignitionnet:

TalkTalk will be keeping track of connected speeds but they don't use an IP Profile in the manner BT Wholesale do. IP Profile is a BT-ism.

Gotcha!

Looks as though another couple of connections have gone in.

Max: Upstream rate = 24777 Kbps, Downstream rate = 79880 Kbps
Path: 0, Upstream rate = 19999 Kbps, Downstream rate = 79891 Kbps

Down Up
SNR (dB): 6.0 14.9
Attn(dB): 0.0 0.0
Pwr(dBm): 14.1 7.2

Will try and avoid a modem restart as it seems unlikely we'll get that kind of sync again.

In reply to a post by Ignitionnet:

Looks as though another couple of connections have gone in.

Max: Upstream rate = 24777 Kbps, Downstream rate = 79880 Kbps
Path: 0, Upstream rate = 19999 Kbps, Downstream rate = 79891 Kbps

Down Up
SNR (dB): 6.0 14.9
Attn(dB): 0.0 0.0
Pwr(dBm): 14.1 7.2

Will try and avoid a modem restart as it seems unlikely we'll get that kind of sync again.

Not fastest enough! Mine is 128/12