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126 IQ Probe User Manual 61200214L1-1
Glossary
frame-relay-capable interface device
A communications device that performs encapsulation. Frame-relay-capable
routers and bridges are examples of interface devices used to interface the
customer's equipment to frame relay network. See also interface device and
encapsulation.
frame relay frame
A variable-length unit of data, in frame-relay format that is transmitted through a
frame relay network as pure data. Contrast with packet.
frame relay network
A telecommunications network based on frame relay technology. Data is
multiplexed. Contrast with packet switching network.
gateway
A device which enables information to be exchanged between two dissimilar
systems or networks.
HDLC
high level data link control. A generic link-level communications protocol
developed by the International Organization for Standardization (ISO). HDLC
manages synchronous code-transparent, serial information transfer over a link
connection. See also SDLC.
host computer
The primary or controlling computer in a multiple computer operation.
in-band
Signaling (dialing, diagnostics, management, configuration, etc.) over the same
channel used for data.
ingress
Frame relay frames leaving from an access device in a direction toward the frame
relay network.
interface device
Provides the interface between the end device(s) and a frame relay network by
encapsulating the user's native protocol in frame relay frames and sending the
frames across the frame relay backbone. See also encapsulation and frame-relay-
capable interface device.