Agilent Technologies HSSI WanProbe J3916A - Manual (Page 159)

Glossary
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FCS (Frame Check Sequence)
An algorithmically derived representation of a frame. (Typically 16 bits.) The
FCS provides error-checking capability. It is computed and appended at the time
of transmission and regenerated and compared upon reception.
Flash EPROM
EPROM that can be erased and reprogrammed while installed in a circuit.
Forward Explicit Notification Bit (FECN)
In Frame Relay, the FECN bit notifies the sending node (or source end) that there
is congestion in the direction of the data flow.
Frame
A frame is a unit of information transferred on a network which contains control
and data information.
Frame Check Sequence (FCS)
An error checking character that is appended to a bit-oriented protocol by the
transmitter.
Frame Relay
A streamlined public network technology well suited to burst traffic typical of
LAN interconnection.
Fs (Signal Framing)
The framing bit (f) identifies frames 6 and 12 in which signaling states, A and B
are transmitted when traffic on a network is channelized voice service.
Ft (Terminal Framing)
The framing bit (F bit) identifies the frame boundaries in a Frame Relay frame.
Full-duplex
A form of communication between two devices where packets flow in both
directions simultaneously. See also Half-duplex.
Gateway
A dedicated computer that is used to route frames from one dissimilar network to
another.