Requirements
This tutorial will show you how to use MCPTT (Mission Critical Push To Talk) with ORS using deltachat and browser application on your UE
Make sure your services are up to date
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 you have all necessary services
Check on your panel in the "service" tab that you have these four services:
- gNB or eNB service: orsXX-enb or orsXX-gnb
- Core Network service: orsXX-core-network
- Mail Server service: orsXX-mail-server
- Conference service orsXX-conference
Make sure Core Network service is configured correctly
![](rapidspace-How.To.Use.MCPTT.With.ORS.image.23?format=)
- Local Domain: You can leave to "ors.rapid.space" or use a domain you own.
Make sure Conference service is configured correctly
![](rapidspace-How.To.Use.MCPTT.With.ORS.image.25?format=)
- Allow subgroups: true
- Use password: false
- DNS SR URL: Make sure this is identical to the URL on the "Software release" field of your core network service
Make sure Mail Server service is configured correctly
![](rapidspace-How.To.Use.MCPTT.With.ORS.image.24?format=)
- DNS SR URL: Make sure this is identical to the URL on the "Software release" field of your core network service
Install deltachat on your phone
Go to the play store and install Deltachat on your smartphone (also available on F-Droid)
Go to deltachat app
![](rapidspace-How.To.Use.MCPTT.With.ORS.image.0?format=)
Click Log Into your E-mail account
![](rapidspace-How.To.Use.MCPTT.With.ORS.image.1?format=)
Click Advanced and set the following parameters
![](rapidspace-How.To.Use.MCPTT.With.ORS.image.2?format=)
Enter an email and password
![](rapidspace-How.To.Use.MCPTT.With.ORS.image.3?format=)
- user@domain: user can be anything you want, domain should match the domain displayed on your "mail-server" service "domain" Connection Parameter
- password: anything you want (there is no check currently)
Log in
![](rapidspace-How.To.Use.MCPTT.With.ORS.image.4?format=)
Add new contact
![](rapidspace-How.To.Use.MCPTT.With.ORS.image.5?format=)
Send message to new contact
![](rapidspace-How.To.Use.MCPTT.With.ORS.image.6?format=)
Accept contact on other phone
![](rapidspace-How.To.Use.MCPTT.With.ORS.image.7?format=)
Add new group
![](rapidspace-How.To.Use.MCPTT.With.ORS.image.8?format=)
Name your group and Add members
![](rapidspace-How.To.Use.MCPTT.With.ORS.image.9?format=)
Select members of your group
![](rapidspace-How.To.Use.MCPTT.With.ORS.image.11?format=)
Go to settings
![](rapidspace-How.To.Use.MCPTT.With.ORS.image.12?format=)
Go to "Advanced" settings
![](rapidspace-How.To.Use.MCPTT.With.ORS.image.13?format=)
Scroll down and search for "Video chat" settings
![](rapidspace-How.To.Use.MCPTT.With.ORS.image.14?format=)
Enter the video conference URL
![](rapidspace-How.To.Use.MCPTT.With.ORS.image.15?format=)
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
Go to your group and send a video chat invitation
![](rapidspace-How.To.Use.MCPTT.With.ORS.image.17?format=)
Ignore certificate warning
![](rapidspace-How.To.Use.MCPTT.With.ORS.image.18?format=)
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.
Ignore certificate warning
![](rapidspace-How.To.Use.MCPTT.With.ORS.image.19?format=)
Click "Proceed to conference.ors.rapid.space (unsafe)"
Click video chat invitation on other phone
![](rapidspace-How.To.Use.MCPTT.With.ORS.image.20?format=)
Enter your username
![](rapidspace-How.To.Use.MCPTT.With.ORS.image.16?format=)
The next time your browser should remember your username.
Use PTT feature in video conference
![](rapidspace-How.To.Use.MCPTT.With.ORS.image.21?format=)
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.