Wowser! 3 Pauls. Whoda thought?
Anyway to answer your queries...
Paul #1....I only have the Desk Top PC connected. ie; NO WiFi or "other" devices in the caravan.
Naturally, when the modem drop out, I lose the VOIP Phone.
Plus, the WiFi is disabled in the modem.
Paul #2....Optus already sent a replacement modem that was worse.
Apparently, they did some "modifications" from their end to the original when I had it connected with them but no mods on the 2nd one.
Paul #3....As I mentioned, The NBN Co. tech had set it up near the point of entry, but it still dropped out, just ¾ Hr after he left.
I use a Cat5 extension cable from the POE in the 'van to above my desk in the annex, just 20 Ft away.
As you say, the "twin/flat" phone cable was not up to scratch, hence the Cat5 cable.
&....I have no nearby permanent neighbours that are on the WWW & have no idea if any permanent residents in the caravan park have changed to the NBN.
I asked the park manager/s if they would ask each in turn, but no feedback from him/them as yet.
They're as slack as......
Thanks for the suggestions & replies.
Regs, L..