Not really, it simply indicates that it delegates the traffic to the sliding sync proxy. It does not indicate whether this proxy works correctly.

Did you try to test your coturn

The test correctly gathers the srflx candidates, so STUN should be working. But I can’t get it to find relay candidates, so I guess TURN isn’t?

The homeserver incl. Coturn is running on a VPS, no ports blocked.
The clients are in different networks. Everything should just work, but it doesn’t for some reason.

If this was the case, the playbook would surely set up two different Coturn instances. Also, I don’t understand why it would work that way.
My setup is not a “special usecase”, but a single unfederated homeserver. Calls do not work between users unless turn.matrix.org is enabled.

Element X works, but does it really require Sliding Sync?

I can see why they haven’t implemented this on mobile phones

I think the iOS client has that feature, but I unfortunately don’t have an iPhone to test that claim.

XMPP

What clients/servers are recommended on each platform (for full encryption support)?

Again, the web client, or any client, can’t have search or message history that works at 100% until it has downloaded your user history, decrypted, and indexed it.

Doesn’t change anything from the fact that the Android client simply doesn’t have implemented that feature.

MAM does not seem to be a finalized standard, plus I don’t understand how this is related to E2EE at all. I’m not terribly familiar with jabber, maybe you can enlighten me.

I haven’t tried Element Web for quite some time, but I remember having some issues with E2EE rooms. Maybe this has been resolved by now or maybe it was just the search not working there as well as on Element for Android. I can’t really remember right now.

I am aware of SchildiChat, but AFAIK it doesn’t provide search in E2EE encrypted rooms, just like Element (both on Android). On iOS they both support it (I think).

Maybe I should check out Syphon then. How polished is the client otherwise? Can it compete with Element?

Edit: Last Syphon release was October 3rd 2022 and the last commit six months ago: https://github.com/syphon-org/syphon/releases
I’d say that project is unmaintained.

Oh wow, apparently I didn’t see the “DSL” in the model name. You could try to figure out whether it is physical identical to another model that doesn’t have a modem built-in (except for the modem obviously) and use an image for that, if you don’t need the modem functionality.

Oh, you’re right. In this case: https://freshtomato.org/

https://www.asuswrt-merlin.net/ as a first step.

I’m not familiar with the exact process yet. But doesn’t that mean if you wanted to run an unfederated instance, you’d need to manually block every other instance there is?

Unfortunately my instance (https://feddit.de) is not federating with it yet.