Cordova expert needed for a Sinch VoIP task

We're building a Cordova application, and we're integrating with Sinch VoIP APIs ([login to view URL]) They do provide a web sdk but we couldn't manage to use it for receiving a call when the app is closed. It is up to you to build a solution that utlize the web-sdk or their native sdk or any other hack as long as our test case passes (the 3 test cases must pass) Deliverables: - A sample cordova project (for IOS and android) which just provides app-to-app voice calling with [login to view URL] and coves following test cases. Test case 1: - install the app on two devices iphone and android - start the app on both phones - make a call from one phone to another while the app is running Test case 2: - restart the android phone - start a call from the iphone to the android phone (without starting the app on android) Test case 3: - restart the iphone - start a call from the android phone to the iphone (without starting the app on iphone) This task is to provide a PoC which covers ALL 3 test cases, so no partial delivery will be accepted. It should be 1 hour of work maximum, for someone who's already experienced in Cordova, cross-platform development, and Sinch