How to disable taking a voicemail messages in Microsoft Teams but allow users to lesson default company greetings

There are some use cases where you need to disable taking voicemail messages in Microsoft Teams. However, the user wants to leave an announcement to callers.

There are a couple of solutions based on the configuration,

• If you have a company board number or front desk who takes the calls and forwards them to an internal user extension, then you can configure a voicemail call answering rule to play a company announcement and disconnect the call. 
• User/Admin can configure the same settings in a couple of ways.

Admin Configuration option via TAC/PowerShell -

Set-CsOnlineVoicemailUserSettings -CallAnswerRule "PromptOnly" -DefaultGreetingPromptOverwrite "Leaving Voicemail option is disabled for user. User will get back to you if needed" -identity "Gengaiyan"

You can also do bulk configuration.

Use Get-CsOnlineUser to filter users based on the Dial-Plan, VoicePolicy, PhoneNumber etc (see the below filter options available in Teams).

$UserData = Import-Csv C:\Temp\Users.csv

ForEach ($Users in $UserData.UserUPN) {

Set-CsOnlineVoicemailUserSettings -CallAnswerRule "PromptOnly" -DefaultGreetingPromptOverwrite "Leaving Voicemail option is disabled for user. User will get back to you if needed" -Identity $User

}

Configure through the TAC: -

As an admin, you can configure voicemail call answering rules in the Teams Admin Center under the voicemail tab.

• Call answering mode - Play an outgoing message to the caller.

• Default greetings prompt - Update the voicemail announcement message for callers.

Configure the Voicemail settings at the client level -

Login to Teams, select Settings, and select "Calls", navigate to the Voicemail section and select "Configure Voicemail"

Under the call answering rules, select "Play your greeting and end the call" and "OK" to save the configurations.