Library /sys$common/syshlp/ncphelp.hlb SET, MODULE, X25-SERVER, KNOWN DESTINATIONS, RECEIVING DTE  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 Identifies the local DTE. It is used to select a destination for
 calls  received on the local DTE.  By default, no receiving DTE
 is used.