Trunk II (Type II)
Trunk II signaling breaks away from the
fleet/subfleet format used in Trunk I. As a
result, fleet maps and size codes are
eliminated. Each radio on a given system
has a unique unit ID and can belong to one
or more talk groups. Trunk II signaling also
has eliminated the high-speed handshake
sequence on the voice channel.
Some Trunk II radios have an automatic
affiliation option. Auto affiliation allows a
radio to automatically register on a system.
Radios with auto affiliation enabled will
find a control channel and execute a
handshake sequence that identifies the radio
and its talk group to the central controller.
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