JPS NXU-2B - Page 7

NXU-2B Operations Manual
vii Interoperability Now!
Glossary
Glossary
COR
Carrier Operated Relay
A signal from a receiver that gives a positive indication that a
carrier or signal is being received and that the receiver is
unsquelched. It has the same function as Carrier Operated
Squelch (COS).
COS
Carrier Operated Squelch
See COR.
DHCP
Dynamic Host
Configuration Protocol
A method of automatically assigning an IP address to an
Ethernet device at startup time. This method conserves IP
addresses in networks where devices do not stay connected
permanently.
DSP
Digital Signal Processor
A type of microprocessor, which is optimized for signal
processing functions.
IP
Internet Protocol
A protocol designed to allow communications between
computers on different networks.
LAN
Local Area Network
A group of computers and associated devices that share a
common communications line, typically within a small
geographic area.
PTT
Push-To-Talk
A control signal to a radio transmitter that controls the actual
transmission of radio frequency energy over the air. Also
called a keyline.
TCP
Transmission Control
Protocol
An additional layer to the Internet Protocol, which ensures
delivery of packets, sent across the network. It can handle
situations such as lost packets or packets arriving out of order.
UDP
User Datagram Protocol
An additional layer to the Internet Protocol which does not
ensure delivery of packets but which offers much lower
transmission overhead than TCP.
VoIP
Voice over Internet
Protocol
Also called Voice over Packet (VoP), a method of sending
voice communications across a digital network.
WAN
Wide Area Network
A network, which is spread out over a wider area, such as
around a city or state. It may include other public or shared
networks.