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Here that output:
xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Max: Upstream rate = 5947 Kbps, Downstream rate = 30036 Kbps
Path: 0, Upstream rate = 3693 Kbps, Downstream rate = 25209 Kbps
Discovery Phase (Initial) Band Plan
US: (0,95) (880,1195) (1984,2771)
DS: (32,859) (1216,1959) (2792,4083)
Medley Phase (Final) Band Plan
US: (0,95) (880,1195)
DS: (32,859) (1216,1959)
VDSL Port Details Upstream Downstream
Attainable Net Data Rate: 5947 kbps 30036 kbps
Actual Aggregate Tx Power: 5.2 dBm 11.9 dBm
============================================================================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 6.2 52.4 64.8 N/A 22.7 62.6 0.1
Signal Attenuation(dB): 6.2 52.2 N/A N/A 22.7 62.6 N/A
SNR Margin(dB): 11.0 9.6 N/A N/A 6.3 6.8 N/A
TX Power(dBm): 5.2 4.8 N/A N/A 11.6 4.2 N/A
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Well the connection seems to be running nicely on this Huawei modem. I woke up this morning to find my upload had increased to 5Mbps (still showing a max of 6Mbps) and the SNR had also dropped back down to 6db. I think I'm on a ECI cabinet and people say you should match the modem type to the cabinet, but for me on my longer line (around 1km) it seems to have worked out better the other way around. Will monitor over the coming days, but at least I'm now getting slightly more than the estimates BT originally stated.
Can I assume the 'max' up/down speeds would be equivalent to what the BT engineer originally got on his meter? (he originally showed 30Mbps down, 6Mbps up).
xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 2
Max: Upstream rate = 6018 Kbps, Downstream rate = 29484 Kbps
Path: 0, Upstream rate = 4996 Kbps, Downstream rate = 25269 Kbps
Discovery Phase (Initial) Band Plan
US: (0,95) (880,1195) (1984,2771)
DS: (32,859) (1216,1959) (2792,4083)
Medley Phase (Final) Band Plan
US: (0,95) (880,1195)
DS: (32,859) (1216,1959)
VDSL Port Details Upstream Downstream
Attainable Net Data Rate: 6018 kbps 29484 kbps
Actual Aggregate Tx Power: 5.0 dBm 12.0 dBm
============================================================================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 6.1 52.3 64.9 N/A 22.7 62.6 0.1
Signal Attenuation(dB): 6.1 52.1 N/A N/A 22.7 62.6 N/A
SNR Margin(dB): 6.6 6.7 N/A N/A 6.1 6.3 N/A
TX Power(dBm): 5.2 4.6 N/A N/A 11.5 4.3 N/A
#
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The band plan shows the upper frequencies are attenuated too much to be useful, probably as a result of a long line or aluminium between you and the cabinet.
I don't think it really matters about matching the manufacturers of the cab and modem. Anyway, the stats are more useful IMO.
It's looking good 
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Thanks Batboy.
I'm probably approaching 1100m to be honest, so I'm happy If I can hold somewhere around these current speeds (about 10 times faster than I was getting on ADSL!)
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Assuming you have used Asbokid's original unlocking firmware, you are likely to see the band plans change in a few days, when the HG612's firmware is remotely updated.
This is from a HG612 with remotely updated firmware, also connected to an ECI DSLAM like your connection:-
| Text | 1
23
45
67
89
1011
1213
1415
1617
1819
2021
2223
2425
| xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY statusStatus: Showtime
Retrain Reason: 0Last initialization procedure status: 0
Max: Upstream rate = 755 Kbps, Downstream rate = 18260 KbpsBearer: 0, Upstream rate = 718 Kbps, Downstream rate = 17982 Kbps
Discovery Phase (Initial) Band Plan
US: (6,31) (882,1193) (1984,2770) DS: (33,857) (1218,1959) (2795,4083)
Medley Phase (Final) Band PlanUS: (6,31) (882,1193)
DS: (67,857) VDSL Port Details Upstream Downstream
Attainable Net Data Rate: 755 kbps 18260 kbpsActual Aggregate Tx Power: 5.6 dBm 11.0 dBm
==================================================================================== VDSL Band Status U0 U1 U2 U3 U4 D1 D2 D3
Line Attenuation(dB): 8.3 68.3 66.9 N/A N/A 27.7 85.2 N/A Signal Attenuation(dB): 8.3 65.7 N/A N/A N/A 36.3 N/A N/A
SNR Margin(dB): 5.5 5.4 N/A N/A N/A 3.8 N/A N/A TX Power(dBm): 1.9 3.3 N/A N/A N/A 11.0 N/A N/A
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From memory, that connection is around 1600m from the cabinet. Note the really poor US sync speed & attainable rate.
My connection is between 1000m & 1100m (Huawei DSLAM) & these are my latest stats:-
| Text | 1
23
45
67
89
1011
1213
1415
1617
1819
2021
2223
2425
| xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY statusStatus: Showtime
Retrain Reason: 0Last initialization procedure status: 0
Max: Upstream rate = 4892 Kbps, Downstream rate = 22908 KbpsBearer: 0, Upstream rate = 4877 Kbps, Downstream rate = 20695 Kbps
Discovery Phase (Initial) Band Plan
US: (7,32) (871,1205) (1972,2782) DS: (33,859) (1216,1961) (2793,3970)
Medley Phase (Final) Band PlanUS: (7,32) (871,1200)
DS: (33,859) (1216,1846) VDSL Port Details Upstream Downstream
Attainable Net Data Rate: 4892 kbps 22908 kbpsActual Aggregate Tx Power: 6.7 dBm 12.7 dBm
==================================================================================== VDSL Band Status U0 U1 U2 U3 U4 D1 D2 D3
Line Attenuation(dB): 8.1 53.5 N/A N/A N/A 21.7 65.7 N/A Signal Attenuation(dB): 8.1 52.4 N/A N/A N/A 30.5 65.4 N/A
SNR Margin(dB): 6.2 6.2 N/A N/A N/A 5.7 5.8 N/A TX Power(dBm): -0.8 5.9 N/A N/A N/A 11.7 5.9 N/A
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My connection was able to achieve around 30Mbps / 5Mbps for a few months, until it gradually deteriorated, increased crosstalk due to more users being connected being the likely cause.
Edited by deleted (Fri 13-Dec-13 19:04:39)
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Hi Bald Eagle,
I used the unlock guide on Kitz forum - assume this is the one you are referring to?
I had seen mention of a new f/w - does this bring any improvements/degradation?
Seems we have pretty similar stats then, with similar distance? The BT estimates were about 20Mbps down and 4.5MBps up - I've assumed this is worst case when more people are connected to FTTC service, even so its still a lot faster than I was getting on ADSL.
I've read that vectoring may help us on longer lines - is this something BT are likely to rollout and what kind of improvements could we realistically expect?
Thanks,
Tim.
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Hi Bald Eagle,
I used the unlock guide on Kitz forum - assume this is the one you are referring to?
Yep. That's the one.
I had seen mention of a new f/w - does this bring any improvements/degradation?
It does seem to slightly improve performance/stability on some longer lines
Seems we have pretty similar stats then, with similar distance? The BT estimates were about 20Mbps down and 4.5MBps up - I've assumed this is worst case when more people are connected to FTTC service, even so its still a lot faster than I was getting on ADSL.
Pre-install, back in 2011, my DS estimate was 14.6 Mbps.
I achieved sync speeds of around 34 Mbps & throughput of around 32 Mbps for the first month, until 'something' caused me to lose both telephone & broadband for 4 days.
The connection was 'repaired' but 11 months of instability & low speeds ensued.
When that was finally repaired, I was able to achieve around 30 Mbps for around 7 months.
During those 7 months, estimates increased to 24 Mbps & then to 30 Mbps.
Starting from January 2013, speeds have deteriorated in steps to the current 20 Mbps (the line has been physically checked by a number of engineers, so it is assumed to be crosstalk as more users are connected).
My connection's estimated speeds are now:-
| Text | 1
23
45
67
| . Downstream Upstream High Low High Low
Range A (Clean) 30.9 22.2 7.3 5.6
Range B (Impacted) 24.4 12.8 6.6 3.6
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It is still a lot better than the less than 1 Mbps I could achieve when on ADSL.
I've read that vectoring may help us on longer lines - is this something BT are likely to rollout and what kind of improvements could we realistically expect?
Vectoring is currently undergoing trials from a few selected cabinets.
At this stage it hasn't been confirmed that it will actually be rolled out, although we assume the modem firmware updates have been enacted in preparation for it.
I do hope vectoring is implemented as it does appear to be the only way to help reinstate higher speeds for users affected by crosstalk.
How much of an improvement it will make remains to be seen.
Edited by deleted (Mon 16-Dec-13 05:34:46)
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