I’m looking for a FedRAMP compliant SIP trunking service for an IVR solution. Any suggestions?
Howdy,
Y’all need to make it an Asterisk question here 'round these parts 
Maybe this would work for you:
PSTN ↔ Zoom Phone SIP Trunks ↔ Zoom certified SBC ↔ Asterisk IVR on virtual machine in approved cloud
…TLS on everything outside the PSTN and it might check off enough of the boxes.