The network plan shows how systems are interconnected and which media have been used for this interconnection. The network plan is an important feature that can be used to assist with the provisioning process and to show the inter-connectivity between NEs and FOs. The example explained in the following chapters is based on a data application using the LEDE1 units in FOX61x systems, namely NE80 and NE82. NE81 bypasses the data service and will work as a kind of Digital Cross Connect (DXC).