Hi
No fault was reported by me as my ISP wont do anything unless the speed drops < 4Mbs and in this case the speed was only down by 1Mbs (dl) 200kbs (ul).
I believe, as they were carry a drum of black cable, the whole cable was replaced. the distance from the junction to the house is approx 10m.
The OR guy did say he may change the cable, not able to confirm.
No disconnection occurred while they were fixing the neighbours problem, just the 1Mbs increase while the neighbours line was disconnected.
OR was at a loss to understand what the fault was.
The line has been stable at 17Mbs, 12dB power, 3dB SNR for at least six months.
The attenuation is 29/30 dB, and the OR guy confirmed that, also the neighbours line tested at 19Mbs, when his cable from the junction box to the house was
disconnected, ie junction to exchange.
The Upload speed change was sudden not gradual, the Rate Attainable, and hence the Download speed was gradual.
The modem/router is a Draytek Vigor 2860, I send snmp data to a database and onto a graph.
The stats collected are
Rate Attainable
SNR
Attenuation
Line Speeds (ul/dl)
Uplink Power
Other statistics are not stored as the 2860 only sends a reduced set of snmp data.
The only recordable change was the gradual drop in Rate Attainable, after a sudden drop in uplink speed and output power.
The down link SNR varies from 3dB to 6dB.
I am curios as to what would cause this when the neighbours line is disconnected the Rate Attainable increases (his house is
about 50m away from me and 50m closer to the exchange).
I am still getting a fair service, but I am considering going to fttc with a different provider when the contract ends
which will give me 16Mbs guaranteed, estimated 21-26 Mbs (DSLAM is about 200m from the exchange, line distance is approx 1400m)
Reset the SNR to 6dB, Power out now 10dB, Rate Attainable 15.5Mbs, will watch it to see if it drops.