Know how to establish the validity and nature of a service call originating form a customer or potential customer. Also know how to move the call forward to initiate service provision or to deal with a query.
The parent node(s) for this knowledge are.
The child or prerequisite node(s) for this knowledge are.
Parent nodes show knowledge which can only be known fully by a human expert if they also understand this item of knowledge.
Child or prerequisite knowledge is knowledge which a human expert must already understand if they know this knowledge fully.