(1) Short for Session Announcement Protocol, an announcement protocol used to communicate the relevant session setup information to prospective participants during multicast sessions. SAPs typically use the Real-Time Transport Protocol (RTP).
(2) Short for Service Advertising Protocol, a NetWare protocol used to identify the services and addresses of servers attached to the network. The responses are used to update a table in the router known as the Server Information Table.
(3) Short for Secondary Audio Program, an NTSC audio channel used for auxiliary transmission, such as foreign language broadcasting or teletext.
(4) Short for SAP America, Inc., Lester, PA, the U.S. branch of the German software company, SAP AG. The name SAP stands for Systems, Applications and Products in Data Processing. SAP's R/3 integrated suite of applications and its ABAP/4 Development Workbench became popular starting around 1993.