Hi there,
I've got a three way Central Filter, D-Link DSL-10CF plugged into the only phone outlet, with modem and a couple phones plugged into it correctly.
After another ADSL dropout today that coincided with me hanging up after a phone call, I swapped the Central Filter for a spare, and opened up the D-Link filter out of curiosity.
Was quite amazed to see that a component G1 is soldered into same trace! See the photo linked below.
The G1 device looks like a large glass diode, probably over-voltage protection across the line. Except it is not wired across the line, both sides go to the same side of the line. The component outline covers three holes in the PCB, and G1 was placed in two holes on one side of telecom line, the remaining hole goes to the other side of the telecom line.
This filter was delivered by Dodo along with a DSL-302G ADSL modem back in 2004. Not as if I have a warranty claim, but it's odd for such a fault to pass production? I would guess the phones and modems have their protection as well, so no further damage done.
Anyway, to see the odd build error, try:
Wonder if this explained why I get ADSL dropouts anytime a storm goes over? Or is that the norm?
Grant.