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Glossary
RTS (request to send)
Rx Abbreviation meaning receive, receiver, or reception.
SAPI (Service Access Point Identifier) Part of the address in an ISDN signalling frame. Identifies the service that the signalling frame is intended for.
SDLC See Synchronous Data Link Control.
Serial transmission Technique in which each bit of information is sent sequentially on a single channel. Serial transmission is the normal mode for data communications. Contrast with parallel transmission.
SDU (Service Data Unit) User data passed through a SAP between the layers of the OSI or a similar model.
Signalling An ATM connection procedure that dynamically implements explicit routes through switches to establish a communication link with another station on the network.
S Interface The interface point between an ISDN device and the user premises network termination.
SDLC See Synchronous Data Link Control.
SNA IBM’s Systems Network Architecture. The part of a user- application network that conforms to the formats and protocols of Systems Network Architecture. It enables reliable transfer of data among users and provides protocols for controlling the resources of various network configurations. The SNA network consists of network accessible units (NAUs), boundary function, gateway function, and intermediate session routing function components, and the transport network.
SNMP (Simple Network Management Protocol) A
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