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6.20.7 OTAR Configuration
OTAR is the over-the-air-rekeying from a KMF and must be enabled for the digital only channel
using RPM2. For OTAR operation, the appropriate KEKs must be loaded into the radio using the
L3Harris Key Loader or a KVL device.
The KMF Configuration must include the RSI of the KMF and the appropriate Message Number
Period.
To enable OTAR and request rekey:
1. Press the Menu/Select button to access the main menu.
2. Press the left or right navigation buttons to display the
SECURITY
menu.
3. Press the up or down navigation buttons to highlight
OTAR
and press the Menu/Select button
to toggle
ENABLED
/
DISABLED
.
4. Press the up or down navigation buttons to select
OTAR REKEY
and press the Menu/Select
button to request that the KMF updates the keys in the radio.
OTAR REKEY
is only enabled
if the radio has successfully registered for data operations. If enabled via programming, the
radio plays an audible confirmation tone to indicate successful OTAR rekey.
6.21 P25 CONVENTIONAL FALLBACK
When P25 Conventional Fallback is enabled, a P25 trunking site responds to failures by allowing
one or more channels to operate as conventional repeaters. Terminals which are properly
configured can then communicate using the conventional P25 channel(s).
The radio provides an audible and visual indication when operating in P25 Conventional Fallback.
