To define a TG to a connection network, code a GROUP definition statement, followed by LINE and PU definition statements for the connections you expect to have using the connection network TG through the port defined by this XCA major node. The GROUP definition statement, particularly through the connection network name (vnname) of the DLCADDR operand, defines the signaling information used to establish switched connections with other remote nodes in the same connection network. The LINE definition statements serve as placeholders for SVCs to remote nodes that are defined either dynamically, or in a switched major node, and are used when those nodes are activated.