Recommended profile
Set the DIDLogic destination to+[number]@<platform-sip-fqdn>;transport=tcp. Keep the exact +E.164 DID on the platform trunk and choose Provider source IPs. DIDLogic credentials are used for platform-to-DIDLogic outbound calls; they do not document digest toward an arbitrary inbound SIP URI.
The official DIDLogic FAQ listed these unique signaling gateways on 22 August 2026: