How to send voicemails?

Hi Nikhita_Reddy25 , 

Here is the solution, This works for me using Teams voice Autoattendant but this requires calling plan license assigned to the resource group . You need to create a office 365 group and add few member , so that voice mail will route to all the office 365 members of that group. Steps is mentioned in the below url.

https://ucstatus.com/2020/01/06/microsoft-teams-auto-attendants-and-shared-voicemail/