ADTRAN 1200214L1 Spezifikationen PDF herunterladen (Seite 164)

Appendix D. Glossary

D-6 IQ Probe User Manual 61200214L1-20

end device

The ultimate source or destination of data flowing through a frame

relay network sometimes referred to as DTE. As a source device, it

sends data to an interface device for encapsulation in a frame relay

frame. As a destination device, it receives de-encapsulated data (i.e.,

the frame relay frame is stripped off, leaving only the user's data)

from the interface device.

far end

The unit or units not on-site (at the customer's premises or the other

end of the data link).

FECN

Forward explicit congestion notification. A bit set by a frame relay

network to notify an interface device (DTE) that congestion avoid-

ance procedures should be initiated by the receiving device. See also

BECN.

file server

In the context of frame relay network supporting LAN-to-LAN com-

munications, a device connecting a series of workstations within a

given LAN. The device performs error recovery and flow control

functions as well as end-to-end acknowledgment of data during data

transfer, thereby significantly reducing overhead within the frame

relay network.

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 transmit-

ted 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.

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ADTRAN 1200214L1 Spezifikationen Seite 164