mode, the repeater operates as a single digital
repeater. Auto Fallback Mode supports non-
emergency Group Calls only. No other call types are
supported in Fallback Mode.
Indications of Auto Fallback Mode
When your radio is using a Fallback channel, you
hear the intermittent “Fallback Tone” approximately
once every 15 seconds (except while transmitting).
Your radio only permits PTT on the selected Group
Contact (Group Call, Multigroup Call, or Site All Call).
It does not allow you to make other types of calls.
Making/Receiving Calls in Fallback Mode
Note:
Calls are heard only by radios that are
monitoring the same Fallback channel and
selected to the same Group. Calls are not
networked to other sites or other repeaters.
Emergency voice calls or Emergency Alerts
are not available in Fallback mode. If you
press the emergency button in Fallback mode,
the radio provides an invalid key press tone.
Private (radio to radio) and Phone calls are not
available in Fallback mode. If you attempt a
call to a private contact, you will receive a
denial tone. At this point you should select a
desired group contact. Other non-supported
calls include Remote Monitor, Call Alert, Radio
Check, Radio Enable, Radio Disable, Text
messaging, Location Updates, and packet
data calls.
Enhanced Traffic Channel Access (ETCA) is
not supported in Auto Fallback mode. If two or
more radio users press PTT at the same time
(or at almost the same time), it is possible that
both radios transmit until PTT is released. In
this event, it is possible that none of the
transmissions will be understood by receiving
radios.
Making calls in Fallback mode is similar to normal
functioning. Simply select the group contact you wish
to use (using the radio’s normal channel selection
method), and then press the PTT to start your call. It
is possible that the channel may be in use already by
another group. If the channel is in use, you receive a
busy tone. You may select Group, Multi-group or Site
All Call contacts using your radio’s normal channel
selection method. While the radio is operating on the
Fallback Channel, the Multigroup operates just like
other Groups. It is only heard by radios that are
currently selected to the same Multi-group.
Advanced Features in Connect Plus Mode
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