Viking VM600 Mobile Radio Operating Manual
8-7
Secure Communication (Encryption)
8.4
Security Settings Override
The default security settings that determine how encryption keys are used for talkgroups
and channels can be changed for different operating modes.
8.4.1
Conventional (P25) Talkgroup Security Override
On conventional digital (P25) channels, the encryption strapping mode and PID are
programmed on a per talkgroup basis similar to the trunked modes (SMARTNET/
SmartZone/P25 Trunked). It can be programmed to override the talkgroup encryption
programming and program it on a per-channel basis. Therefore, if desired on conventional
digital channels, encryption can be programmed differently for each channel.
Conventional analog channel encryption is always programmed on a per-channel basis.
8.4.2
Secure Call Behavior
8.4.2.1
Failsoft, Group Regroup or Dynamic Regroup Call
If the radio is in failsoft or is dynamically regrouped, the radio will use any key to decrypt
a received call and will transmit using switched strapping and the key PID specified as
originally programmed.
If the radio is group regrouped, most functionality is retained. The radio will continue to
use the key PID specified (as programmed) will use any key to decrypt a received call.
However, the strapping of the current channel will be used. This means that if the channel
has the override feature enabled, the strapping specified in this section will be used for the
channel. If the override feature is not enabled, then the strapping of the currently selected
talkgroup will be used.
8.4.2.2
Channel with only a Talkgroup Specified
If the override security settings feature is enabled, then the override parameters will be
used. If the override feature is not enabled, then the talkgroup parameters will be used. If
the
Any Key
option is disabled and a secure talkgroup call is received that uses a different
key than the one specified, the radio will not unmute but will display the received call
information.
Draft 4/29/2014
Summary of Contents for Viking VM600 Series
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