DMR usage notes
There are two basic types of DMR calls your transceiver can transmit or receive:
private and group. The openSPOT4 forwards what it receives from your radio to
the network, or from the network to your radio. The network may forward your
calls to its other connected stations (hotspots/repeaters/gateways) or calls from
other connected stations to you based on linked talkgroups and reflectors.
Talkgroups and reflectors are network features, they are completely handled by
the network and not the openSPOT4, and their behavior may be different on
each network.
Talkgroups
DMR networks usually have static or dynamic linking available for a talkgroup.
Statically linked TGs remain linked all the time, dynamically linked TGs stay
linked for you only for a limited amount of time after the last call (usually 15
minutes on BrandMeister, depending on the currently used server's
configuration).
Having a talkgroup linked either dynamically or statically means that stations
which have the same linked talkgroup will receive all (usually group) calls
sent to that talkgroup.
Dynamic talkgroups
You can link a TG dynamically by simply starting a (group) call to the talkgroup
ID. The network will automatically link your openSPOT4 to the called TG ID.
To unlink all dynamically linked talkgroups, call TG4000 (start a short group call
to DMR ID 4000).
Note: calling TG4000 will also unlink linked reflectors, not just all dynamic
talkgroups.
Dynamic talkgroups on the BrandMeister Network
The BrandMeister Network lets you call any talkgroup ID and will create that
talkgroup dynamically for you.
There's BrandMeister Network feature for hotspots called auto static
talkgroups: the first talkgroup ID you call after calling TG4000 will be linked
auto static which means it won't be unlinked after a timeout. You can unlink
this auto static TG by calling TG4000.
Static talkgroups on the BrandMeister Network
Statically linked TGs can be configured on the BrandMeister Network's dashboard
after logging in, or by using the openSPOT4's BrandMeister Manager.
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