User's Manual

Table Of Contents
DRAFT 4
122 TaitNet P25 Glossary TB9400 Installation and Operation Manual
© Tait Electronics Limited September 2011
NTP Network Time Protocol is a protocol and software implementation for
synchronizing the clocks of computer systems across a network. An NTP
server obtains the correct time from a time source and sets the local time in
each connected computer.
O
octet A set of 8 bits.
Offline mode A mode of operation in which active service is suspended so that special
operations can be carried out, such as programming in a new configuration
or carrying out invasive diagnostic tests.
Online mode The normal operating mode of the base station.
outbound Describes the direction of a signal: from a fixed station over the air interface
to an SU.
over A single transmission, which begins when a user presses PTT and ends when
the user stops pressing.
P
P25 Project 25. A suite of standards and requirements endorsed by the TIA and
intended for digital public safety radio communications systems.
PA The Power Amplifier is a base station module that boosts the exciter output
to the required transmit level.
PCB Printed Circuit Board.
PMU The Power Management Unit is a module in the base station that provides
power to the subrack and monitors power conditions.
preamble A well-defined signal that is transmitted at the beginning of digital P25 calls
to facilitate downlink voting and to allow the transmit buffer to fill.
privileges A set of access rights to the web interface functions. There are Guest,
Maintainer, and Administrator privileges.