Library /sys$common/syshlp/ncphelp.hlb SET, MODULE, X25-SERVER, DESTINATION dest-name, PRIORITY priority  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 Specifies the priority of the destination record and is used to
 select one of a set of destinations for which the incoming call
 may be valid.  Specify a value in the range 0 to 255, where 255
 is the highest priority.  By default, priority takes a value
 of 0.