Description of the channel used by the SAP system for communicating with the external system during electronic data interchange. There are various technical methods for implementing this type of communication (port types). The selection of the port type depends on the technical configuration of the external system.
Example: most EDI subsystems read IDocs in the form of sequential files, i.e. the port type 'File' is used.
Logical description of the system that communicated with the SAP system.
In the case of outbound processing this system receives the Intermediate Documents, processes them, and sends status records. In the case of inbound processing this system sends the Intermediate Documents to the SAP system which forwards them to the respective application.
Customizing bundles containing customizing settings are assigned to ports in the graphics proxy using the command ADD_CU_BUNDLE.
Ports are defined as constants in the interface IF_GRAPHICS_PROXY.
If two programs need to communicate with each other at the TCP/IP level, then the initiating program needs to know the IP address of the host on which the other program is running, and which port the other program uses. IP communication can be described uniquely as IP address 1 - port number 1 <-> port number 2 - IP address 2. 'Well-known ports' have a known number, for example Telnet communcation always runs through port 23. SAProute uses port 3299 (default).