This tutorial will show you how to use MCPTT (Mission Critical Push To Talk) with ORS using deltachat and browser application on your UE
You should have version at least 1.0.322 to use MCPTT. Please ask Rapid.Space to update your service if you do not.
Check on your panel in the "service" tab that you have these four services:
Go to the play store and install Deltachat on your smartphone (also available on F-Droid)
Please refer to How to Test Your ORS
Please enter the following URL: URL/group/public/$ROOM , where URL is the URL displayed on your conference service.
For instance if you leave the default domain you need to enter: https://conference.ors.rapid.space:8443/group/public/$ROOM
Your browser will warn you about the certificate, please ignore it. On chrome this requires first clicking "Advanced". You will only have to do this once, your browser should remember your choice.
Click "Proceed to conference.ors.rapid.space (unsafe)"
The next time your browser should remember your username.
You can talk while holding the green button to use the Push To Talk feature. The other phone will also hear this even if it is on another app or in sleep mode.