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1.4.6
Over-the-Air Rekeying
The Over-the-Air Rekeying (OTAR) feature allows the dispatcher to remotely reprogram encryption
keys in the radio after a rekey request.
Single-system OTAR
Single-system OTAR allows a radio to be rekeyed by only one Key Management Facility (KMF) or
Key Management Controller (KMC).
Multi-system OTAR
Multi-system OTAR allows a radio to be rekeyed by multiple KMFs. After an initial programming, the
radio is able to seamlessly move to different secure systems associated to a newly selected
channel.
NOTICE: This feature must be preprogrammed by a qualified radio technician. Contact your
system administrator for more information.
1.4.7
P25 Digital Vehicular Repeater System
Motorola Solutions offers an MSI Certified APX compatible, third party, P25 Digital Vehicular Repeater
System (DVRS) that provides low-cost portable radio coverage in areas where only mobile radio
coverage is available and portable radio coverage is either intermittent or non-existent.
NOTICE: Portable subscriber units enabled in the system for Radio Authentication shall be able
to authenticate regardless of whether they are communicating directly on the system or by
using a DVRS.
1.4.8
Conventional Talkgroup and Radio Scan Enhancements
Enhancements have been made to the Conventional Talkgroup at the system to improve the Scan
feature operation significantly when multiple agencies are using a single conventional radio frequency
channel.
These enhancements allow you to use Selective Squelch to operate on only the subset of talkgroups
that are relevant to the users rather than all talkgroups on the channel.
The enhancements support the following Scan mode:
•
Mixed Vote Scan.
•
Standard Conventional Scan.
•
Priority Operation.
Up to 30 different talkgroups can be supported using conventional channels. A maximum of four
talkgroups can be supported when Vote Scan channels are being used.
Smart PTT is supported with this enhancement as Smart PTT prevents you from transmitting while
other users are on the channel.
NOTICE: User Selectable Talkgroups are not compatible with this Conventional Talkgroup
Enhancement.
MN004476A01-AE
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