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TB9400 Installation and Operation Manual
© Tait International Limited
November 2019
reciter
A module of a base station that provides both receiver and exciter
functionality.
router
A router is an internetwork packet switch that switches data packets from
an input interface to an output interface. The interfaces can be of different
types.
RS-232
A protocol for serial communications between a DTE (data terminal
equipment) and a DCE (data communications equipment) device.
RS-485
An updated version of the RS-232 protocol for serial communications
between multiple devices.
RSSI
Received Signal Strength Indicator is a level that indicates the strength of
the received signal.
RTP
Real Time Protocol is an Internet protocol that supports the real-time
transmission of voice and data.
Rx
Receiver.
simplex
Able to provide transmission and reception in only one direction at a time.
simulcast
The simultaneous broadcast by more than one transmitter of the same
signal on the same frequency.
site
1. The base station equipment at a particular location. This includes power
supplies, transmitters, receivers, network interfaces and controllers.
2. The location of that equipment.
skew
A measure used in centrally voted channel groups. If a voice stream arrives
at the central voter 20ms later than the first voice stream from the same SU,
it is said to have a skew of 20ms.
SNMP
Simple Network Management Protocol. A protocol used (for example) by
the trunking site controller to monitor the status of the channel group and
its members.
system control bus
Provides the following physical paths in a TB9400 base station:
■
I
2
C and RS-485 communications between the modules in the subrack
■
fan power from the PMU
■
power connections for the reciter and front panel.
