sipDestination 
  This is the destination to transfer the inbound call to. This will immediately transfer to a SIP refer without using any assistants.
If this is sent, assistantId, assistant, squadId, and squad are ignored.
This is the destination to transfer the inbound call to. This will immediately transfer to a SIP refer without using any assistants.
If this is sent, assistantId, assistant, squadId, and squad are ignored.