The SAP Gateway carries out CPI-C services within the R/3 world.
The SAP Gateway consists of several processes. In R/3, one SAP Gateway is started for each Application Server (from Release 2.1I).
For certain constellations, an SAP Gateway comes into use as a separately installed R/3 instance or outside an R/3 System:
You should install the SAP Gateway components in the same way as you install all other SAP programs, i.e. in the executable files directory of the corresponding system tree.
CPI-C services can be subdivided according to their implementation:
CPI-C services can be used either in the ABAP program or for the external programs via the interfaces.
Details about the SAP Gateway are discussed in the following topics:
SAP Gateway Under BS2000
SAP Gateway Under OS/2, UNIX, AS/400, and WindowsNT
Authorizations for External Programs (Security)
The SAP Gateway and The SNC Interface
Using the SAP Gateway Monitor in R/3
Using the SAP Gateway Monitor Outside the R/3 System