7.11.3.3
Erasing Encryption Keys‡
If the Multi-system Over-the-Air Rekeying feature is in use, the keys erased are only for the current
secure profile of the selected channel. The erase all option operates as configured by the dealer or
system administrator. Erasing all keys using the Top (Orange) button and the Top Side (Select) button
erases all keys in all keylists in the radio.
Procedure:
• Erasing the single key in radios with the single-key option and erasing all keys in radios with the
multikey option by using the preprogrammed
Top Side
button and
Top (Emergency)
button:
a. Press and hold the
Top Side
button.
b. While holding
Top Side
button down, press the
Top (Emergency)
button.
The display shows
PLS WAIT
. When all the encryption keys have been erased, the display
shows
ALL ERASED
.
NOTE:
Do
not
press the
Top(Emergency)
button before pressing the
Top Side
button, unless you are in an emergency situation as this sends an emergency alarm.
7.11.3.4
Requesting an Over-the-Air Rekey†‡
If the Multi-system Over-the-Air Rekeying feature is in use, the rekey request is only for the current
selected secure profile.
Prerequisites:
Ensure that the Unique Key Encryption Key (UKEK) or Unique Shadow Key (USK) is
loaded into the radio with the Key Variable Loader (KVL) before the rekey request can be sent. Refer
to your local key management supervisor for more information.
Procedure:
1
Press and hold the preprogrammed
Rekey Request
button to send the rekey request.
If the rekey operation fails, a bad-key tone sounds and the display shows
RKY FAIL
.
NOTE:
The rekey operation failure indicates that your radio does not contain the UKEK
or USK.
7.11.3.5
MDC OTAR (Conventional Only)
This feature allows you to view or define the Motorola Data Communications (MDC) Over-the-
Air Rekeying (OTAR) features. It is applied only when operating in secure encrypted mode. In
addition to Rekey Requests, OTAR transmissions include Delayed Acknowledgments, and Power-up
Acknowledgments.
Some of the selected options require configuration at the Key Management Controller (KMC) site to
work properly.
NOTE:
This feature must be preprogrammed by a qualified radio technician. Contact your
system administrator for more information.
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Chapter 7 : Advanced Features
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