This matches with what I've seen/heard/read - the clicking is the NTD turning
off/on power to the DPU, while it tries to check if it's coming online.
We had a DOA DPU and have had one since after a storm, in ... under three
months.
James
On 2021-01-25 09:30 Matt Perkins wrote:
> There’s
Ross,
On Sat, 23 Jan 2021 at 12:36, Ross Marston wrote:
> We have tried local Telstra shop (apparently Telstra internal systems have
> been down all day) 132200, 132999, 12511, and a 03 number we found
> on google search, all to no avail.
https://www.first.org/members/teams/telstra_t-cert lists
Be great to see a few high res-shots inside.
Matt
On 25/1/21 10:45 am, James Hodgkinson wrote:
This matches with what I've seen/heard/read - the clicking is the NTD turning
off/on power to the DPU, while it tries to check if it's coming online.
We had a DOA DPU and have had one since after
There’s nothing quick about a disconnecting relay. But I do have the reports of
them clicking so perhaps power is applied and they are looking for some
condition that does not appear so power is removed a d re-applied. Whatever
condition they are looking for can not be sensed due to the fault
There is definitely a relay internally, not sure what it's actually there for
though - could be for applying power to the line when attempting to power the
DPU, if a short is detected it can disconnect quickly.
Kind regards,
Thomas Jones
-Original Message-
From: AusNOG On Behalf Of
They had a few hundred to replace in the eastern suburbs in the first week of
Jan the cable there is almost all underground. If anyone has one and can post a
detailed photo of the PCB we can get to the bottom of it but suspect the HV
protection is non existent.
I have heard mention from
Mea Culpa.
That makes perfect sense. I was considering it from an RF perspective
wherein the mass of earth would theoretically shield the buried
copper. I'd failed to consider that in the case of a ground strike the
buried copper presents a low-resistance path through the lumped
resistance of
