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Standard User GorillaWheels
(member) Thu 27-Apr-17 15:04:15
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New to fibre with BT Infinity 1, couple of questions.


[link to this post]
 
Hi, I've recently switched to fibre with BT Infinity 1. I'm pleased so far, no problems, I've got 55/10 sync and getting throughput of approx. 51 download and 9 upload. My noise margins though caught my eye. With my previous EE ADSL2+ connection my noise margins were if memory serves me right 6/6 around that, a bit of fluctuating, but now on Infinity 1 the Smart Hub shows 12.5/7.9, I'm connected on the same mk3 filtered NTE as before, nothing changed there, just plugged new router into what I already had.

Product name:
BT Hub 6A
Serial number:
+084316+NQ65214303
Firmware version:
SG4B10002244
Firmware updated:
04-Apr-2017
Board version:
1.0
Gui version:
1.32.0
DSL uptime:
8 Days, 21 Hours 19 Minutes 56 Seconds
Data rate:
10.00 kbps / 55.00 kbps
Maximum data rate:
18364 / 63474
Noise margin:
12.5 / 7.9
Line attenuation:
18.5
Signal attenuation:
VPI / VCI:
0/38
Modulation:
G_993_2_ANNEX_B
Latency type:
Fast Path
Data sent / received:
1642 MB Uploaded / 3499 MB Downloaded
Broadband username:
bthomehub@btbroadband.com
BT Wi-fi:
Active
2.4 GHz wireless network name:
BTHub6-SPH6
2.4 GHz wireless channel:
Smart (Channel 1)
5 GHz wireless network name:
BTHub6-SPH6
5 GHz wireless channel:
Smart (Channel 36)
Wireless security:
WPA2 (Recommended)
Band steering:
Off
Wireless mode:
Mode 1
Firewall:
On
MAC address:
24:20:C7:91:99:E1
Software variant:
-
Boot loader:
7.33.1


Also with VDSL is the line attenuation figure now distance to the fibre cab rather than distance to the exchange, on ADSL2+ my line attenuation was 29.5 and now on VDSL it is 18.5?
Thanks for any answers.
Dave

BT Infinity 1 - 55/10 sync with approx. 51 down /9 up
Standard User ian72
(eat-sleep-adslguide) Thu 27-Apr-17 15:08:59
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Re: New to fibre with BT Infinity 1, couple of questions.


[re: GorillaWheels] [link to this post]
 
The reason you have a higher noise margin is that you have a fixed 55/10 package and are syncing at the maximum capped rate. If you went for Infinity 2 those noise margins would reduce and the speed would increase.
Standard User GorillaWheels
(member) Thu 27-Apr-17 15:16:21
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Re: New to fibre with BT Infinity 1, couple of questions.


[re: ian72] [link to this post]
 
Thanks Ian for explaining that.
Dave

BT Infinity 1 - 55/10 sync with approx. 51 down /9 up


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Standard User GorillaWheels
(member) Thu 27-Apr-17 15:42:52
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Re: New to fibre with BT Infinity 1, couple of questions.


[re: ian72] [link to this post]
 
So are my noise margin figures normal levels for my kind of capped rate?
Dave

BT Infinity 1 - 55/10 sync with approx. 51 down /9 up
Standard User ian72
(eat-sleep-adslguide) Thu 27-Apr-17 15:45:37
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Re: New to fibre with BT Infinity 1, couple of questions.


[re: GorillaWheels] [link to this post]
 
That depends on how long your line is. On my line a 55 capped rate would be 6dB as I only get about 45Mb. On a very short line the noise margin would be very high. It is all in relation to the line length as to how much margin would be available for any particular speed.
Standard User RobertoS
(elder) Thu 27-Apr-17 15:45:47
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Re: New to fibre with BT Infinity 1, couple of questions.


[re: GorillaWheels] [link to this post]
 
And yes, VDSL2 attenuation is from the FTTC cabinet, via the phone cabinet (PCP).

Bear in mind that VDSL2 attenuates much more rapidly than ADSLx, which is why at very long distances from the cabinets ADSLx can in fact be the faster.

It's also the reason why in-home wiring is even more important than on ADSLx. Once you are into the "well below maximum" of the package even a few metres can cost megabits per second.

My broadband basic info/help site - www.robertos.me.uk. Domains, site and mail hosting - Tsohost.
Connection - AAISP Home::1 80/20. Sync 65273/13554Kbps @ 600m. BQMs - IPv4 & IPv6

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Administrator MrSaffron
(staff) Thu 27-Apr-17 15:45:51
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Re: New to fibre with BT Infinity 1, couple of questions.


[re: GorillaWheels] [link to this post]
 
Yeap, and attenuation figures are now just for the home to the fibre cabinet, but are not directly comparable due to the much higher frequencies of VDSL2 compared to ADSL2+

The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.
Standard User GorillaWheels
(member) Thu 27-Apr-17 16:05:46
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Re: New to fibre with BT Infinity 1, couple of questions.


[re: GorillaWheels] [link to this post]
 
Thank you gents for the replies.

BT Infinity 1 - 55/10 sync with approx. 51 down /9 up
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