Agilent Technologies J3972A, J3919A manual Fidf

FIDF

FIDF is a 26-byte Transmission Header (TH) used for communication between adjacent SNA subarea nodes, provided both support Explicit and Virtual Route protocols, that use message sequencing.

Fill Cell

An empty or null ATM cell. This type of cell is a placeholder inserted into the signal stream to occupy bandwidth not allocated to a service. Fill cells are in either the Idle format (ITU-T) or Unassigned format (ATM Forum).

Flow Control

A method used to assure that the source does not overwhelm the destination by sending data faster than it can be processed and absorbed.

Flash EPROM

EPROM that can be erased and reprogrammed while installed in a circuit.

Frame

A frame is a unit of information transferred on a network which contains control and data information.

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.

Generic Flow Control (GFC)

The Generic Flow Control is a 4-bit field in the first byte in the header of an ATM UNI cell. The GFC field is used for flow control in various ATM applications. Two modes of operation have been designed for the GFC field - Controlled and Uncontrolled. A GFC field set to all zeros denotes no flow control or uncontrolled transmission. A GFC field set to some non-zero value indicates a flow control condition or controlled transmission.

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