To set the voicemail greeting, log into Admin Console and go to External Voicemail Greeting. Learn more from the steps here.

To prevent calls from routing to voicemail in Admin Console, go to Call Forwarding Rules to enter a number associated with an extension. Learn more here.

If voicemail notifications aren't reaching your email address, set the correct email address at the correct location under your user profile. Learn more here.

You can create or edit voicemail passwords in Admin Console by first creating a user profile. Learn more here.

To manage voicemail notifications when phones aren't ringing due to outage, enable forwarding for When Internet Connection is Down option. Learn more here.