Send your organization API key as Authorization: Bearer <key>.
Assignment id
Assignment
Binds an org agent to a SIP trunk. With digest inbound auth, routing uses number. With ACL inbound auth, routing uses alternate_number (globally unique).
Number to dial for this agent when the trunk uses digest inbound auth; must be unique among assignments on this trunk.
Globally unique alternate dial string when the trunk uses ACL inbound auth; used instead of per-trunk number routing in that mode.