emailed and asked them to close the ticket. Explained why politely. I don't expect a response though.

I have the 3900 with firmware 1.0.6.0

I removed my 3900 from my business cabinet and replaced it with the New RouterOS Cloud Core CCR-1036-12G-4S, all working fine except the CCR was telling WAN2 was constantly dropping out with had a Vigor120 v1 when the other 2 WAN's had V2 Vigor 120's, bought a new V2 for WAN2 all was fine...

But since I'm going to be moving and want the RouterOS CCR-1036-12G-4S for myself at the new house i put the 3900 back and its been going like a Ferrari compared to its original ways , so far no problem , no having to reload pages , no hdcp issues .... YET

was the 3900 issues all down to a slightly faulty older modem ?
Very odd

Still ongoing. Awaiting yet another firmware from Draytek.

As an aside, you said you're using EFM. How is that actually being delivered. ISP sales bods seem
to give different answers...as well as meaning different things by EFM. e.g. is it an 8 core
CAT4 cable poking out of the ground going straight into the V2960...is there another
box involved etc. Does it use 4 cores, 2 cores (1 pair) or 8 etc...

Thanks,

my 3900 seems to be going ok now

It comes in over copper and what look like standard BT Analogue NTE5 sockets.

We have a Quad EFM which gives us 4 pairs "Phone lines" (there is also DUAL EFM which is 2 pairs (lines) - we have this in a smaller site) these connect to a box provided by the provider which is called a RAD, which then presents an ethernet port for connection to the router.

So...

4* Analogue line (data only - no voice)

---

RAD box

---

router

Hope that helps.