Apologies for resurrecting a dead thread, but... ...I used the search function, right?

Have used plenty of D101 units without issue.

Our problem lies with a D201V.

Have been working on one of these godless things with an associate for a few days now and we just cannot get it to operate reliably. When calling from the unit, we miss about 3 out of 5 calls.

We couldn't cable to the gate so were running over a pair of Unifi Loco Nano M2s, which show 250-300Mbps consistently.

The client's internet is 113Mbps down/5Mbps up (Yeah, I know - Weird) but doorbird claim .5Mbps Up as their minimum, so we're well inside that.

We've tried different routers, hardwiring it, sent it back to the supplier and they
"replaced the internals" whatever that means...

Obviously, the customer is running out of patience, as are we.

Any thoughts, comments, ideas, similar experiences???