Post your FTTC line stats & unlocking info

Locky · 20 Feb 2014 at 22:56

Looks like you had a nice boost from that? Thats interesting. Not seen many direct comparison on an Huawei cab.

Locky · 23 Feb 2014 at 12:11

GuruJockStrap said:
Had my Infinity 2 installed today. Not unlocked the HH5, but would be interested to see what you make of these stats:

Data rate: 7578 / 54033
Maximum data rate: 7902 / 51903
Noise margin: 6.2 / 5.3
Line attenuation: 0.0 / 23.1
Signal attenuation: 0.0 / 20.9

I was estimated speeds of 76Mbps but actually getting around 50Mbps.

I'm approx 450m from the fibre cabinet, so just wondering if my stats and download speeds are as a result of that.

I would say your line is running about as good as it can and may drop a little, is the cab new or been installed a while?

Locky · 27 Feb 2014 at 20:40

An 800 meter line should get a slightly higher speed, around 40mb but yours isn't too bad.

Locky · 27 Feb 2014 at 22:21

Cuchulainn said:
My stats have gone from

Attainable rate (kbit/s) 107816 39717
SNR margin (dB) 13.9 18.6
Line attenuation (dB) 0 0
Output power (dBmV) 12.8 5

...on the day of install to these now :

Attainable rate (kbit/s) 94800 39490
SNR margin (dB) 10.4 18.5
Line attenuation (dB) 0 0
Output power (dBmV) 12.8 5

Crosstalk? DLM?

Yep and you're still miles over the 79999 threshold so don't worry about it!

Locky · 9 Jun 2014 at 12:54

chris6273 said:
Just been installed by an engineer. Smashing chap! Apparently we are only the second customer on the cab!

Gone from:

to:

6. Data rate: 20000 / 79995
7. Maximum data rate: 37081 / 123489
8. Noise margin: 23.4 / 18.8
9. Line attenuation: 0.0 / 10.1
10. Signal attenuation: 0.0 / 10.1

Disappointingly it's the same poor(ish) ping we've had with ADSLMax and ADSL2+ though at ~16ms despite having a 5ms ping to the second hop.

Openreach Modem (HG612 type B) I bought off of Fleabay arriving tomorrow for unlocking and use so I can extract more detailed information! HH5 feels sluggish (Not as snappy) like all previous Home Hubs we've had compared to 3rd party routers so it will be interesting to see the difference (With our 7800N acting as the Router with the HG612).

Anyone have any idea how far the cabinet is with a 10.1dB line attenuation?

About 300 to 350 meters and the reason your ping is poor due to being routed through Sheffield.

Locky · 11 Jun 2014 at 10:54

No, only worry you have is crosstalk chopping down your margin, but still have plenty in the tank to keep that full sync.

Locky · 25 Sep 2014 at 01:23

Thats interesting, so the DGND3700v1 can be flashed to work with VDSL?

I spose anything with a BCM6368 chipset in it can be made to work with VDSL.

Locky · 2 May 2015 at 08:45

S2KIP said:

Guys, any idea why my speed has dropped? I seem to have gone from mid 60's to mid 40's downstream.

This is what it was:

Code:

# xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason:	0
Last initialization procedure status:	0
Max:	Upstream rate = 16877 Kbps, Downstream rate = 48128 Kbps
Bearer:	0, Upstream rate = 16666 Kbps, Downstream rate = 47663 Kbps

Discovery Phase (Initial) Band Plan
US: (6,31) (882,1193) (1984,2770) 
DS: (33,857) (1218,1959) (2795,4083) 
Medley Phase (Final) Band Plan
US: (6,31) (882,1193) (1984,2770) 
DS: (41,857) (1218,1959) (2795,4083) 
		  VDSL Port Details		  Upstream		  Downstream
Attainable Net Data Rate:	    16877 kbps		    48128 kbps
Actual Aggregate Tx Power:	       6.9 dBm		     14.1 dBm
====================================================================================
	VDSL Band Status		U0		U1		U2	U3		U4		D1		D2		D3
  Line Attenuation(dB):	 2.2	 26.0	 38.4	  N/A	  N/A	 14.1	 32.5	 48.3	
Signal Attenuation(dB):	 2.2	 25.8	 38.3	  N/A	  N/A	 16.4	 32.2	 48.3	
		SNR Margin(dB):	 5.8	 6.0	 6.3	  N/A	  N/A	 6.2	 6.2	 6.3	
		 TX Power(dBm):	-3.6	-17.6	 6.5	  N/A	  N/A	 11.7	 7.4	 7.2	
#

Code:

# xdslcmd info --show
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason:	0
Last initialization procedure status:	0
Max:	Upstream rate = 16427 Kbps, Downstream rate = 47892 Kbps
Bearer:	0, Upstream rate = 16666 Kbps, Downstream rate = 47663 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):	 6.2		 6.0
Attn(dB):	 19.4		 0.0
Pwr(dBm):	 14.1		 6.9
			VDSL2 framing
			Bearer 0
MSGc:		18		16
B:		239		238
M:		1		1
T:		64		3
R:		14		16
S:		0.1603		0.4565
L:		12680		4469
D:		1		1
I:		254		255
N:		254		255
			Counters
			Bearer 0
OHF:		154404319		1537207
OHFErr:		150		133
RS:		1291917023		3560201
RSCorr:		2403		5037
RSUnCorr:	918		0

			Bearer 0
HEC:		790		0
OCD:		35		0
LCD:		35		0
Total Cells:	2045912860		0
Data Cells:	358695992		0
Drop Cells:	0
Bit Errors:	0		0

ES:		82		116
SES:		0		0
UAS:		27		27
AS:		397453

			Bearer 0
INP:		0.00		0.00
INPRein:	0.00		0.00
delay:		0		0
PER:		2.57		7.56
OR:		74.59		23.27
AgR:		47737.93	16689.17

Bitswap:	113415/114376		184242/190989

I haven't touched anything at home. All I've tried so far is resetting the modem once and resetting the router.

I went on online chat with Sky and they wanted to book an engineer but I declined as I wanted to give it a week.

To be fair, it seems to have risen from 44 to 48 in terms of attainable rate.

Looks like crosstalk has kicked in and your line has also been banded.