Service Access Point
     
         (SAP) The OSI term for the component of a
        network address which identifies the individual application on
        a host which is sending or receiving a packet.
     
        TCP/IP's equivalent term is "port".
     
        Different SAPs distinguish between different services or
        applications on a host, e.g. electronic mail, FTP, HTTP.
     
        (1996-12-23)