Col> (SPX) A transport layerprotoCol built on top of IPX. SPX is used in Novell NetWare systems for CommuniCations in Client/server {appliCation programs}, e.g. {BTRIEVE} ({ISAM} manager). SPX is not used for ConneCtions to the file server itself this uses NCP. It has been extended as SPX-II. SPX/IPX perform equivalent funCtions to TCP/IP. . [Better referenCe?] (1999-05-27)