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6.
GLOSSARY, ABBREVIATIONS, AND ACRONYMS
The following terms, abbreviations, and acronyms used in this manual.
10/100Base-T
AAR
AREMA
CAT5
CDMA
CLASS C EQUIPMENT
CPU
DHCP
DNS
DOT (NUMBER)
EMI
ESN
FCC
FQDN
FRA
FTP
Copyright 2019
The physical connection layer used by TCP/IP and
typically implemented in a Category 5 cable.
American Association of Railroads
American Railway Engineering and Maintenance-of-
Way Association, a North American railway industry
group.
Category 5 cable, unshielded twisted pair type cable, a
standard networking cable terminated with an RJ-45
compatible plug.
Code Division Multiple Access, a cellular channel
methodology, contrasted with GSM.
AREMA classification of the TransPortal device, used
in protective bungalows or similarly NEMA-rated
enclosures.
Central Processing Unit, also microprocessor.
Dynamic Host Configuration Protocol, a network
application protocol used by devices (DHCP clients) to
obtain configuration information for operation in an
Internet Protocol network. This protocol reduces
system administration workload, allowing devices to
be added to the network with little or no manual
intervention.
Domain Name System, a hierarchical naming system
for computers and networked connected devices,
translates readable addresses to their respective
routable numeric addresses.
Department of Transportation, a unique physical asset
identification number used in the US transportation
industry.
Electromagnetic Interference, radiated emissions from
a device that can disrupt operation of an adjacent
device.
Electronic Serial Number, a unique identifier for a
cellular radio device.
Federal Communications Commission
Fully Qualified Domain Name
Federal Railway Administration, the railroad sector of
the US Department of Transportation.
File Transfer Protocol, a networking protocol for
transferring data files.
SM-1H1.0002 Rev. 2, March 2019
TransPortalTM Interlock Monitor
6-1
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