Pictures, adverts and anything else linked to can often come down a new stream though.

In reply to a post by RobertoS:

Pictures, adverts and anything else linked to can often come down a new stream though.

I did not know that, overall the speedtests are fine, usage will not be noticeably impacted at the speeds they've linked to. Not 100% perfect but nothing to spend time worrying over in my view.

Until you have 2 kids on Netlfix, another kid using Sky on demand, the last kid on youtube, me working or online games playing and wife surfing and using iPlayer.

Then that x1 performance can become significant

In reply to a post by eckiedoo:

The fact that the FTTC is "the other side of our front garden wall" does not guarantee maximum speed.

The local FTTC here is probably a similar distance, about 10 Metres from my front door; but the link cables to the PCP travel about 50 Metres to the PCP, followed by about 250 M of original phone cabling, to get to my front door, still only 10 M from the FTTC.

(I can see inside the FTTC when opened, from my lounge window.)

I forget the site which gives forecast BB speeds; but when I used it to extract the forecast speeds for all 77 houses on this estate, it showed that my house and the others in the immediate group, were likely to get the slowest BB speed, whilst geographically the nearest to the FTTC; and second nearest geographically to the PCP.

The most remote houses on the estate, about 500 M from the PCP, are forecast to get faster speeds, although not maximum.

The estate was fully phone-wired during build on a greenfield site in 1967, so no obvious reason for the extended wiring.

So the geographic locations of the FTTC and of the PCP are not reliable indicators of likely Broadband performance.

In our case, I don't think it's that big an issue:

====================================================================================
VDSL Training Status: Showtime
Mode: VDSL2 Annex B
VDSL Profile: Profile 17a
G.Vector: Disable
Traffic Type: PTM Mode
Link Uptime: 1 day: 1 hour: 30 minutes
====================================================================================
VDSL Port Details Upstream Downstream
Line Rate: 20.202 Mbps 80.103 Mbps
Actual Net Data Rate: 20.000 Mbps 79.987 Mbps
Trellis Coding: ON ON
SNR Margin: 9.7 dB 12.9 dB
Actual Delay: 0 ms 0 ms
Transmit Power: -12.6 dBm -12.6 dBm
Receive Power: -16.2 dBm 5.9 dBm
Actual INP: 0.0 symbols 0.0 symbols
Total Attenuation: 0.0 dB 6.4 dB
Attainable Net Data Rate: 25.828 Mbps 105.494 Mbps
====================================================================================

Having managed to borrow a Huawei modem and a Technicolor router, I have now had chance to test my connection with the ZyXel 8924 in VDSL mode, the ZyXel in combination with the modem and the Technicolor router with the modem, I think we can rule out the ZyXel as being the cause of the problem as both the download and upload speeds are a smidge faster.

I'm now torn between paying £6 extra to go to a Business connection with no great expectation of a fundamental improvement or being pragmatic and saving £6 a month on a 40/10 connection, where I should be able to max out the connection.

In terms of our usage, we probably don't need anything quicker than 40/10, however it would have been a shame not to have tried to get full speed, what with the FTTC cabinet just being the other side of the garden wall and all that.

Here are some speed tests from this morning. The speed tests were a bit variable, possibly because I am having to use my work laptop when testing on the iMac.

Here are a couple of the best ones using different kit combinations:

Using the Thomson router with Huawei modem
http://www.thinkbroadband.com/speedtest/results.html...

Using the ZyXel VMG8924 in vDSL mode:
http://www.thinkbroadband.com/speedtest/results.html...

And a couple of the more interesting ones!:
http://www.thinkbroadband.com/speedtest/results.html...
http://www.thinkbroadband.com/speedtest/results.html...

These are definitely the worse I have seen.

The tests were run on the iMac, but I can't rule out that Outlook was replicating on the laptop mid-test though.

All the kit swapping has upset the DLM, so now have an interleaved line. Sync speed dropped from 80 to 76, multi thread download speeds have dropped from 65-70 to 40-50, single thread speeds now dropped to under 40 and ping times have doubled.

Happy days!!

Getting closer to giving up on the 80/20 connection and dropping to 40/10.

In reply to a post by jaydub:

All the kit swapping has upset the DLM, so now have an interleaved line.

This may be down to the Zyxel 8924... On my rock solid TT 80/20 line, the HG612 has been flawless for me yet when i briefly tried the Zyxel in bridge mode (uses a newer BCM chipset than HG612) the line errors went through the roof. I went back to the HG612 before the DLM intervened. Sometimes old is best

I get the feeling that ZyXel sync's too high for some reason.

I have no time for them all of a sudden!

No real evidence to support this.

The ZyXel was initially synced at:

====================================================================================
VDSL Training Status: Showtime
Mode: VDSL2 Annex B
VDSL Profile: Profile 17a
G.Vector: Disable
Traffic Type: PTM Mode
Link Uptime: 2 days: 20 hours: 18 minutes
====================================================================================
VDSL Port Details Upstream Downstream
Line Rate: 20.202 Mbps 80.103 Mbps
Actual Net Data Rate: 20.000 Mbps 79.987 Mbps
Trellis Coding: ON ON
SNR Margin: 9.6 dB 14.3 dB
Actual Delay: 0 ms 0 ms
Transmit Power: -12.8 dBm -12.7 dBm
Receive Power: -16.5 dBm 5.9 dBm
Actual INP: 0.0 symbols 0.0 symbols
Total Attenuation: 0.0 dB 6.3 dB
Attainable Net Data Rate: 25.282 Mbps 111.343 Mbps
====================================================================================
VDSL Band Status U0 U1 U2 U3 U4 D1 D2 D3
Line Attenuation(dB): 0.1 4.6 8.3 N/A N/A 3.0 6.6 11.6
Signal Attenuation(dB): 0.1 4.6 8.1 N/A N/A 4.1 6.5 11.6
SNR Margin(dB): 10.2 10.8 9.3 N/A N/A 14.3 14.3 14.3
TX Power(dBm): -17.7 -42.1 -14.5 N/A N/A 7.8 7.3 7.6
====================================================================================

The Huawei stats were:

Status: Showtime
Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 30773 Kbps, Downstream rate = 103792 Kbps
Bearer: 0, Upstream rate = 20000 Kbps, Downstream rate = 79987 Kbps

Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 17a
TPS-TC: PTM Mode(0x0)
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 12.6 12.7
Attn(dB): 6.5 0.0
Pwr(dBm): -10.1 -10.2
VDSL2 framing
Bearer 0
MSGc: 18 150
B: 239 236
M: 1 1
T: 23 5
R: 0 16
S: 0.0955 0.3771
L: 20104 5410
D: 1 1
I: 240 255
N: 240 255

Since the two snapshots were taken a few days apart, they look remarkably identical, at least to my untrained eye.