Library /sys$common/syshlp/ncphelp.hlb SET, CIRCUIT, NETWORK net-name  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 Applies only to X.25 PVCs and X.25 DLM circuits. Specifies the
 network  that the circuit runs through. If only one network is
 set up, this  parameter is not required.  Otherwise, the
 parameter is mandatory.