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A Service Access Point ( SAP) is an identifying label for network endpoints used in Open Systems Interconnection (OSI) networking. The SAP is a conceptual location at which one OSI layer can request the services of another OSI layer. As an example, PD-SAP or PLME-SAP in IEEE 802.15.4 can be mentioned, where the medium access control (MAC) layer ...
Network service access point address. A network service access point address ( NSAP address ), defined in ISO/IEC 8348, is an identifying label for a service access point (SAP) used in OSI networking. These are roughly comparable to IP addresses used in the Internet Protocol; they can specify a piece of equipment connected to an Asynchronous ...
The Subnetwork Access Protocol ( SNAP) is a mechanism for multiplexing, on networks using IEEE 802.2 LLC, more protocols than can be distinguished by the eight-bit 802.2 Service Access Point (SAP) fields.
The resulting packet is generally referred to as LLC protocol data unit (PDU) and the additional information added by the LLC sublayer is the LLC HEADER. The LLC Header consist of DSAP ( Destination Service Access Point ), SSAP ( Source Service Access Point) and the Control field.
Public safety answering point. A public-safety answering point ( PSAP ), sometimes called a public-safety access point, is a type of call center where the public's telephone calls for first responders (such as police, fire department, or emergency medical services / ambulance) are received and handled. It takes calls from any landline, mobile ...
The focal points were the withdrawal from unprofitable markets and an emphasis on the process side of SAP application consulting —particularly in German-speaking countries.
The architecture designed for the abstraction layer is based on two 1905.1 service access points accessible to upper layers: a 1905.1 MAC SAP and a 1905.1 ALME SAP.
Within the service layering semantics of the OSI network architecture, the presentation layer responds to service requests from the application layer and issues service requests to the session layer through a unique presentation service access point (PSAP). [6]