A good cell phone voice mail greeting is clear, courteous and to the point. Enunciate, don't mumble, to make it as easy as possible for those with poor hearing or bad connections to be able to hear your greeting. Be polite, and save swearing for the conversation, if applicable.
Your voicemail greeting can make a positive or negative impression on people. By considering your target audience and tone, you should be able to keep it positive. Length: Don’t make people wait minutes to leave a message. Apologies: If people expect your to be available, apologize for missing their call. Set expectations: Let people know when they may receive a callback, but be realistic. Accuracy: If you change your voicemail for things like holidays, be sure to update it when needed. How do You Set Up a Business Voicemail?

5. Subaccounts voicemail access and phone number assignment. Add name and assign each phone number a name to easily identify who is using the line. Select Continue.
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.