0 votes
I'd like to know if Zoiper has a way to validate if a call is in progress on the Android phone but not by Vozip but by normal operator phone line, so I can place a waiting tone when a call comes in through the mobile application. I leave an example for you to understand me better 

I receive a call on my mobile phone to the number I have contracted with a phone operator, and someone tries to call me on Whatsapp.Whatsapp makes a busy tone and hangs up, that's what I want to achieve I don't know if Zoiper has this feature. 

in Android by (120 points)

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