Can anyone clarify why WebRTC session initiation is failing with a 408 timeout? The Data Action triggers correctly, but the softphone client never connects. The payload below is sent to the Genesys Cloud API. We are running version 24.1.1 in the London region. No firewall blocks detected.
trigger: inbound_call
action: start_webrtc_session
payload:
user_id: "12345"
channel: "web"