For represented employees who don’t have an assigned desk phone or business phone number, use the phone number where they work most often or "check-in." If they use their personal phone for work, that number must be provided as their business phone. If none of the above apply, use the phone number of the department’s administrative office. For those who choose not to use personal phones for work, assign a VoIP number, such as Avaya Workplace VoIP, accessible via desktop or mobile app.