Getting further... added a new function and instructed the assistant to call it as soon as the call starts.. It sort of does that.. type": "status-update", "status": "in-progress", "type": "inboundPhoneCall", "status": "ringing", "customer": { "number": "+12125551212", "sipUri": "xxxxx"} all good... problem is that there's no callid that I can pass back to the webhook with the relevant info pulled from the CRM using the callerid number...