Tait TB9300, Инструкция по установке и эксплуатации, Страница: 127 / 138

TB9300 Installation and Operation Manual
Glossary 127
© Tait Limited March 2016
prevents the receiver gate from repeatedly muting and unmuting when the
level varies around the trigger point.
I
2
C
A bi-directional two-wire serial bus which is used to connect integrated
circuits (ICs). I
2
C is a multi-master bus, which means that multiple chips
can be connected to the same bus, and each one can act as a master by
initiating a data transfer. Used in the TB9300 for communications between
each reciter and its associated PA, and between reciter 1 and the PMU.
inbound
Describes the direction of a signal: from an MS over the air interface to the
fixed station.
IP
Internet Protocol is a protocol for sending data packets between hosts.
isolator
A passive two-port device which transmits power in one direction, and
absorbs power in the other direction. It is used with a PA to prevent damage
to the RF circuitry from high reverse power.
kernel
The core executable of an operating system.
LAN
Local Area Network. A computer network that interconnects computers in
a limited area, such as a single building or group of buildings.
LED
Light Emitting Diode. Also the screen representation of a physical LED.
license
Some operational functions of the base station are controlled by licenses.
Purchasing a license from Tait allows you to enable the feature set which
includes the required functionality.
logical channel
One of the two timeslots provided in each TB9300 radio frequency. Each
timeslot can function as a separate logical channel, independent of the other
timeslot. One radio frequency can therefore carry two separate voice or
data streams, one in each timeslot.
mobile station
The term used in the ETSI DMR standard documents for a two-way radio
(generally a mobile or a portable radio) conforming to the DMR
specifications.
mute
Prevents audio from being passed to the radio’s speaker.
MS
Mobile Station (see above).
NAT
Network Address Translation allows the use of a single IP address for a
whole network of computers. A NAT sits between the public Internet and