There was a major fiber cut in Nashville (AT&T). AT&A is currently working to repair it. This is a multi county/state issue in southeast (not only a County issue).
AT&T cell calls cannot make it back to Trenton Telephone or Chickamauga phone land line numbers. Landline phones with local prefixes still works to Dade County non-emergency numbers. According to Dade County, 911 calls are not affected.
No timeline for complete repair has been released by AT&T.
Here are the backup non-emergency 911 number 423-413-5849 for the Dade County Sheriff’s Office is 706-944-0400.

