Build an auto dialler + recording app in Native to work with my react native app -- 4

i need to build a Native dialler product that works from my react native CRM app .it should have the following functionality .


controls for next call,pause call
start and stop auto dialler
keypad
auto voice recorder
transfer call to an agent
live whisper barging for VoIP calls
mute/speaker/hold/transfer/start recording/stop recording controls /add call/duration/call status/name of the person called/company called.hangup