Know what standards affect the interconnection of equipment common in an office communication system and how to locate and interpret these. Also know what general interfacing methods are available.
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.