I've been reading the docs on channel event webhooks and I'm not really seeing what I would call a great examplle of usage. How would I create a channel event webhook that creates a bearer value for connecting to a 3rd party? Are all of the JSON field values addressable by, ex, 'request={"account_id":"{ACCOUNT_ID},"call_id":"CALL_ID","duration_seconds":"DURATION_SECONDS"}

And, would I just put that in the URI or in the webhook document or does kazoo require the document to be formatted differently?

Also, I know form the docs that kazoo supports sending SMS/MMS. Does it also support receiving SMS/MMS? Is that process documented?