Tait TB9100, Инструкция по установке и эксплуатации

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TB9100 Installation and Operation Manual Technical Description 105
© Tait Electronics Limited May 2006
Voting
The base stations and gateways in one channel group act in concert to
transmit the same conversation. The channel group participants vote
amongst incoming streams to select the best outgoing stream. Thus, the
channel group participants select which terminal, line interface or control
panel microphone shall be sent to the channel group.
The channel group can operate in simplex or duplex modes. This mode is
distinct from (but related to) the RF simplex/duplex mode.
Simplex mode
The simplex channel group has a single voter at each channel group
member, which selects one stream from all possible sources, and sends it to
all output interfaces. The vote winner could be a terminal speaker, or a line
interface speaker (dispatcher).
Duplex mode
The duplex channel group allows two directions of speech flow
simultaneously. Channel group members vote incoming RF streams and
select one vote winner. The channel group members send this inbound
stream to all line interfaces and control panel speakers (if so enabled). At the
same time, in each channel group member, a separate voter selects one voice
stream from the line interfaces (and control panels), and the outbound
stream is sent to all RF interfaces. Like the simplex voter, there are duplex
voters at each channel group member.
Both simplex and duplex channel groups can repeat the RF, or not.
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All of the channel group voters act in unison, and reach the same
decision
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The voters choose the stream based on a set of priorities: originating
interface, arrival order, flow type (analog or digital), signal quality, and
network location
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If the base stations share the same receiver frequency, the channel group
members periodically re-vote, to give preference to the best quality (RF)
frequency
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If the channel group base stations have their repeaters enabled, the base
stations in the channel group act as a wide area repeater
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The channel group supports line interfaces at more than one base station:
voice streams from different line interfaces are prioritized by IP address
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Control of channel group mode is by means of configuration, or tone
remote/task manager