The most common reference to SAP, including a Source Service Access Point ( SSAP ) and a Destination Service Access Point ( DSAP ) refers to the boundary between the Data Link Layer and the Network Layer.
12.
OSI Application Layer protocols as well as Asynchronous Transfer Mode ( ATM ) can use Transport ( TSAP ), Session ( SSAP ) or Presentation ( PSAP ) Service Access Points to specify a destination address for a connection.
13.
With the fleet fast expanding, and the company adding new direct to London service access points along both the M4 and M5-Exeter, Salisbury, Taunton, Bristol, Cardiff, Swansea and Swindon proving most popular-the company now employed a full-time sign writer.
14.
Two service access points ( SAP ) are defined on the interface between the system layer and the wireless link layer, which are WL _ SAP ( Wireless Link SAP ) and WLME _ SAP ( Wireless Link Management Entity SAP ), respectively.
