Tait TB9100, Инструкция по установке и эксплуатации

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TB9100 Installation and Operation Manual
Glossary133
© Tait Electronics Limited May 2006
channel group
A channel group is a single logical channel consisting of a set of
base stations. The base stations are linked by an IP network and
share a common multicast IP address.
channel profile
A channel profile is a named group of configuration settings that
help to define the properties of a channel. Each channel in the
channel table must have a channel profile assigned to it.
channel seize
Channel seize is a signal received at the analog line interface,
requesting the base station to accept the analog signal as an input
into the channel group. The base station can be configured to
acknowledge an asserted E-line, LLGT, or LLGT following
MDC1200 signaling as a channel seize signal.
channel spacing
Channel spacing is the bandwidth that a channel nominally
occupies. If a base station has a channel spacing of 12.5 kHz,
there must be a separation of at least 12.5 kHz between its
operating frequencies and those of any other equipment.
channel table
The channel table is the base station’s database of channel
configurations.
circuit domain
The part of the base station processing functionality that
processes speech signal as a continuous stream of bits – a digital
circuit. The opposite of packet domain.
CODEC
An IC which combines analog-to-digital conversion (coding)
and digital-to-analog conversion (decoding).
configuration file
A configuration file consists of all the configuration settings
needed for a base station, stored as a file in the configurations
folder. Configuration files have the extension *.apc.
connection list
A connection list contains the names and IP addresses of base
stations that the CSS can connect to.
control bus
The control bus is used for communications between base station
modules in a subrack. It is an I
2
C bus, a bi-directional two-wire
serial bus which is used to connect integrated circuits (ICs). I
2
C
is a multi-server bus, which means that multiple chips can be
connected to the same bus, and each one can act as a server by
initiating a data transfer.