How to Redirect a call through opsgenie to a TEAMS number phone

[Balyo technical center]

Hello

We have create a group hunt on MIcrosoft teams with a french phone number

When our client try to call a help desk number; it should be redirected via Opsgenie to our phone number

It rings but when we accept the call nothing happen from our side

From client side; the call is hang out without any msg

Could you plz help us to understand more what happen

Thank you