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61200214L1-1 IQ Probe User Manual 129
Glossary
strips the frame relay frame off of each frame to produce the original LAN frame,
and passes the LAN frame on to the end device. Routers connect multiple LAN
segments to each other or to a WAN. Routers route traffic on the Level 3 LAN
protocol (e.g., the internet protocol address). See also bridge.
SDLC
synchronous data link control. A link-level communications protocol used in an
IBM systems network architecture (SNA) network that manages synchronous,
code-transparent, serial information transfer over a link connection. SDLC is a
subset of the HDLC protocol developed by ISO.
service
The provision of telecommunications to customers by a common carrier,
administration, or private operating agency using voice, data, and/or video
technologies.
SNA
systems network architecture. The IBM protocol group which governs
mainframe communication.
SNMP
simple network management protocol. A control and reporting scheme widely
used to manage devices from different vendors. SNMP operates on top of the
internet protocol.
SR
data set ready. A signal on the DTE interface that indicates if the
communications is connected and ready to start handshaking control signals so
communications can begin.
statistical multiplexing
Interleaving the data input of two or more devices on a single channel or access
line for transmission through a frame relay network. Interleaving of data is
accomplished using the DLCI.
switched network
The network of dial-up telephone lines using circuit switching to provide
communications services to network users.