GatesAir Intraplex NetXpress, Installation And Operation Manual

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7—Glossary Intraplex NetXpress IP Multiplexer
Version 3.05
GatesAir, Inc. 7-3
Intraplex Products
Reference Description
FEC Forward Error Correction; detects/corrects fewer than predetermined number
or fraction of bits or symbols corrupted by transmission errors.
Frame Refers to TDM Bus frames that occur at an 8 KHz rate (125 uS). Also used to
refer to Ethernet frames.
FIFO First in, first out; refers to transmitted and received packets.
FPGA Field Programmable Gate Array; a type of gate array that is programmed in
the field rather than in a semiconductor fab. Containing up to hundreds of
thousands of gates, there are a variety of FPGA architectures on the market.
Some are very sophisticated, including not only programmable logic blocks,
but programmable interconnects and switches between the blocks. The
interconnects take up a lot of FPGA real estate, resulting in a chip with very
low gate density compared to other technologies.
FTP File Transfer Protocol; used to provide file transfers across a variety of
systems. This application is at the seventh layer of the OSI model.
GARP Generic Attribute Registration Protocol; a standard for a generic method by
which various devices automatically disseminate attribute information across
a bridged Local Area Network (LAN).
Gateway A node on a network representing an entrance to another network.
GLOP A mechanism allocating multicast addresses to autonomous systems. GLOP is
not an acronym or abbreviation.
GPS Global Positioning System; developed by the U.S. Department of Defense,
this is a worldwide radio-navigation system used in military, marine, and
terrestrial navigation and in location based services.
GUI Graphical User Interface; a means by which humans interact with computers
via windows, buttons, and menus that the human uses a mouse to
manipulate.
HTML Hypertext Markup Language; "tag" language used to specify branch labels
within a hypertext document.
HTTP Hypertext Transfer Protocol; communications protocol that enables Web
browsing.
ICMP Internet Control Message Protocol; this protocol delivers error and control
messages from hosts to message requestors.
IGMP Internet Group Management Protocol; these statistics are the standard for IP
multicasting.
INS In Service; indicates that the NIM is currently in service.
Internal Timing Mode of timing in which a calibrated internal oscillator is used to generate the
reference timing for the NetXpress system.
IP Internet Protocol; the IP part of TCP/IP, the protocol used to route a data
packet from its source to its destination over the Internet.
JPEG Joint Photographic Experts Group; a format that compresses graphics of
photographic color depth so that the files are smaller and quicker to
download. The image deteriorates in quality as you add compression.
Jitter High-frequency delay variation as opposed to wander (low-frequency delay
variation).