I have confirmed that our DLM profile was reset at last contract renewal - we have only had BT as ISP.
We have a Huawei DSLAM in the FTTC in our rural exchange car park (I assume BT are planning sell this exchange in the future).
During out last contract renewal (£5/mo for unlimited Infinity 1) the BT rep' was proud to announce that our "service would now be up to 55mbps". As can be seen from below the Downlink appears capped at 40mbps.
Any advice how to achieve the full throughput for our circuit would be greatly appreciated.
Router stats are below.
VDSL Training Status: Showtime
Mode: VDSL2 Annex B
VDSL Profile: Profile 17a
Traffic Type: PTM Mode
Link Uptime: 12 days: 8 hours: 6 minutes
VDSL Port Details Upstream Downstream
Line Rate: 4.346 Mbps 39.998 Mbps
Actual Net Data Rate: 4.318 Mbps 39.999 Mbps
Trellis Coding: ON ON
SNR Margin: 5.8 dB 10.4 dB
Actual Delay: 0 ms 0 ms
Transmit Power: - 3.6 dBm 13.1 dBm
Receive Power: -22.0 dBm -9.6 dBm
Actual INP: 0.0 symbols 48.0 symbols
Total Attenuation: 0.0 dB 23.7 dB
Attainable Net Data Rate: 4.258 Mbps 49.782 Mbps
VDSL Band Status U0 U1 U2 U3 U4 D1 D2 D3
Line Attenuation(dB): 7.3 38.9 N/A N/A N/A 18.6 48.9 75.0
Signal Attenuation(dB): 7.3 38.8 N/A N/A N/A 21.0 48.5 78.6
SNR Margin(dB): 5.7 5.8 N/A N/A N/A 10.4 10.4 10.5
TX Power(dBm): -14.8 -4.0 N/A N/A N/A 11.3 7.8 -1.6