Implement PHP <--> Linphone ios incoming call voip push notification

Need to implement Linphone on ios, to be able to receive Incoming Call VOIP Push notification from PHP (Freeswitch --> PHP --> Linphone ios to be precise). _____________________________ I have a very specific need. As my team failed to make this work. My team was able to compile the softphone from Linphone source code. Was able to write push notification script, and able to send and receive push notifications on Softphone on ios. *** The only problem was, the incoming call UI on ios was not appearing as the app is closed in backgrounnd (Push notification received though). So the call cannot be picked up. I may need you to have specific experience to make this work. Not just able to make push noitifications on ios work. So we do not waste each other's time. _____________________________ You need to first write push notification script that will work with incoming call on Linphone ios code. (Preferably in PHP, or if not, it can be in Node.js, or Python. Importantly, to be able to receive the HTTP request parameters required for push notification) And I will give your Apple ID permission on my Apple Developer Account to create any certificate needed (There is existing app/APP ID on Developer Account already). You need to download Linphone ios source code and config/modify it with the certificate you created on Apple Developer console. Modify the source code to use specific Bundle ID as the existing app on Developer Account. Make the incoming calls UI appear through push notification mechanism (As the app is closed in background and push notification make it able to show the incoming call UI and be able to pickup the call on the softphone). Then upload the build onto App Store Connect Test Flight to make sure it work.