Service manual

Glossary, Abbreviations, and Acronyms
SM-1H1.0002, Rev. 1, July 2009 6-1
6. GLOSSARY, ABBREVIATIONS, AND ACRONYMS
The following terms, abbreviations, and acronyms used in this manual.
10/100Base-T The physical connection layer used by TCP/IP and typically
implemented in a Category 5 cable.
AAR American Association of Railroads
AREMA American Railway Engineering and Maintenance-of-Way
Association, a North American railway industry group.
CAT5 Category 5 cable, unshielded twisted pair type cable, a
standard networking cable terminated with an RJ-45
compatible plug.
CDMA Code Division Multiple Access, a cellular channel
methodology, contrasted with GSM.
CLASS C EQUIPMENT AREMA classification of the TransPortal device, used in
protective bungalows or similarly NEMA-rated enclosures.
CPU Central Processing Unit, also microprocessor.
DHCP 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.
DNS Domain Name System, a hierarchical naming system for
computers and networked connected devices, translates
readable addresses to their respective routable numeric
addresses.
DOT (NUMBER) Department of Transportation, a unique physical asset
identification number used in the US transportation
industry.
EMI Electromagnetic Interference, radiated emissions from a
device that can disrupt operation of an adjacent device.
ESN Electronic Serial Number, a unique identifier for a cellular
radio device.
FCC Federal Communications Commission
FQDN Fully Qualified Domain Name
FRA Federal Railway Administration, the railroad sector of the
US Department of Transportation.
FTP File Transfer Protocol, a networking protocol for
transferring data files.
GPS Global Positioning System, world-wide latitude and
longitudinal position determination network which also
provides accurate synchronized time of day.