All calls were going directly to voicemail and the greeting was some funky messagemaybe it was the default although custom was checkmarked. I also tried resetting, turning off WiFi, checking Do Not Disturb. HOWEVERClearing all my old voicemail messages WORKED! Thanks so much for sharing! This saved me a trip to the AT&T Store.
There are very few cases in which our telephone answering service would recommend having an antiquated voicemail answer your incoming calls. A Courteous Communications can recommend these 10 recordings for personal use only. Your business callers may not appreciate these voicemail recordings, but your friends and family will surely get a kick out of them.

Enable the message waiting indicator for your desk phone by checking the box next to Use phone message waiting indicator. 6 Enable Voicemail Notifications 5
Creating a professional voicemail greeting isn’t complicated, but you need to keep a few things in mind to ensure success. The following tips will help: Be friendly and welcoming - let your company's personality shine!; Have a clear voice, speak at a slow to moderate pace, minimize background noise; Ensure the greeting is human and approachable; Keep the greeting short and informative; Ensure the greeting doesn’t sound robotic or unnatural; Show your gratitude for the call by saying thank you; Manage expectations by clearly stating when the client can expect a callback.