We had an ongoing problem with some of our calls showing as spam, and stumbled upon a solution that I thought may be helpful to others. If you encounter this issue, the solution is to register the number that is being called from with the major cell phone carriers. I did this with about 10 of our numbers and it resolved the issue.
Here are links where you can register your numbers:
AT&T: https://hiyahelp.zendesk.com/hc/en-us/requests/new?ticket_form_id=824667
Sprint / US Cellular: https://reportarobocall.com/trf/
T-Mobile: https://calltransparency.com/
Verizon:
https://voicespamfeedback.com/vsf/------------------------------
Doug Shaner
IT Director
Liberty Healthcare
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