3. Create a subaccount. From the Account Overview page, select (+) from the My digital phone section. Select Manage my plan. From the My Phone Service page, scroll to My voicemail and select Create or manage voicemail accounts.
Then rehearse it a few times. Experiment by accentuating different words. But be careful not to make it sound too scripted.

Rather than waiting for a callback, open up additional channels of communication with your callers by inviting them to email. The most professional voicemail greetings often include an alternative method of communication.
Whether you’re out for the day or are off for the week, the first rule of an out of office voicemail greeting is: let callers know when you’ll be back! You’ll save them the frustration of continuing to call and yourself the hassle of listening to redundant voicemails. It’s also a good idea to set the expectation of whether you are answering messages while you’re away, and who they can reach for assistance in your absence.