Thank you for the detailed reply, I have added the DIDs in the tenant under “CALLS & SMS” and had already made the inbound route in the tenant. Unfortunately, I still receive busy tone when calling in on the additional DIDs.
This tenant does have it’s own trunk registered, do the “CALLS & SMS” settings rely on the MAIN tenant trunk having these DID numbers?
If DIDs are associated with an account which needs registration for authentication, then in that case you need to have that account register under Trunk for DID/ DIDs to get authenticate.
And once the DID/ DIDs are authenticated you should get incoming on Tenant. For outgoing you may use separate main trunk for call termination.