Watching this page proved to be useful: on 21 June, at about 10 pm, I discovered that the upstream/downstream margins had deteriorated to only 6 dB upstream, which also caused the upstream transmission rate to diminish from 256 kb/s to 160 kb/s. Here's a time line:
Later got a call back from Adrienne of Call Australia, who said that she would raise a fault and send me email. I didn't hear back from her.
Calls to both Telstra and Call Australia brought the information that they were working on “rehabilitating” the lines, and that they estimated to be complete at 1900 this evening.
Went into town In the afternoon,and saw the linesmen on the way, not far from the location of the last fault. They confirmed that the line was between two other sections that had already been replaced. Why can't Telstra just replace the whole thing?
They were waiting for a digger, and they were still confident to have things finished by this evening. On the way back, though, at 1730, there was no sign of the linesmen, no sign of digging, and no dial tone on the phone. So, once again, they have not honoured their Customer Service Guarantee. On the other hand, the DSL line (not covered by the guarantee) was still working, and since 8 am today the margins are better—maybe because of the lack of other traffic. I wonder if they work without DC voltage on the line.
At 9:45, even the ADSL line died. Prepared to go into town and do something else, but to my surprise it came back again at 11:10:
Obviously that was the time they needed to actually splice the cable. When it came back, the margin values were back to normal, but it only took 15 minutes for the downstream margin to drop by 5 dB. I wonder what caused that. Went and had a talk to the linesmen, but of course they didn't know either.
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