Siemens A53457 Installation & Maintenance page 20

GCP 4000:
GEO:
HDLC:
HDLC UI:
HD/Link:
HUB:
iLOD:
IP:
LAN:
MAC:
MODEM:
NEMA:
OCG:
Document No.: COM-00-05-16
Version: C.1
Clothing and ESD prevention gear, such as grounding straps or
floor pads, can help prevent ESD conditions.
Gate Crossing Predictor 4000 – A Siemens Rail Automation
product that provides a train detection device used as part of a
highway-railroad grade crossing warning system to provide a
relatively uniform warning time.
Geographic Signaling System – A Siemens Rail Automation
product that is vital microprocessor-controlled signaling equipment.
It monitors and controls switches, signals, and relays at wayside
locations on the railroad.
High-level Data Link Control - A synchronous serial protocol for
exchanging information. The default standard for serial
communications between WCCs and BCPs.
High-Level Data Link Control Unnumbered Information
Home Distant/Link – Siemens Rail Automation vital I/O assembly
supporting a vital communications protocol.
Ethernet hub - A device for connecting multiple Ethernet devices
together making them act as a single segment.
Intelligent Light Out Detector – Siemens Rail Automation product
used to detect light out conditions for crossing lamps.
See TCP/IP
Local Area Network – A collection of devices, usually PCs or
workstations, that are interconnected for the purpose of sharing
data, typically on an Ethernet communications platform.
Media Access Control – Describes a typically hard-wired machine
address.
Modulator/Demodulator – A device that takes computer signals and
converts them to signals that can pass across telephone lines and
be reconverted back to computer signals at the distant end.
National Electrical Manufacturers Association
Office Communication Gateway – Siemens Rail Automation office
application providing front end processing and cluster controller
functionality.
xx
June 2006, Revised June 2014