Requesting An Over-The-Air Rekey (Astro Conventional Only); Mdc Over-The-Air Rekeying Page; Infinite Ukek Retention - Motorola SRX 2200 Model 3.5 User Manual

Requesting an Over-the-Air Rekey
(ASTRO Conventional Only)
Ensure that the 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.
This feature, also known as OTAR, allows the dispatcher to
reprogram the encryption keys in the radio remotely. The
dispatcher performs the rekey operation upon receiving a
rekey request from the user.
1
or to Reky.
2 Press the Menu Select button directly below Reky.
3 Perform one of the following actions:
• Press the PTT button to send the rekey request.
• Press the PTT button again, or the
Emergency button, to exit the feature and
transmit in normal mode.
If the rekey operation fails, you hear a bad-key tone
and the display shows Rekey fail.

MDC Over-the-Air Rekeying Page

This feature allows you to view or define MDC Over-the-Air
Rekeying (OTAR) features. It is applied only when
operating in secure encrypted mode and only for
conventional communications. In additional to Rekey
Requests, OTAR transmissions include Delayed
Acknowledgements, and Power-up Acknowledgements.
Some of the options selected may also need to be set up at
the Key Management Controller (KMC) site to work
properly.
NOTICE:
This feature must be preprogrammed by a qualified
radio technician. Check with your dealer or system
administrator for more information.
or

Infinite UKEK Retention

This feature enables Unique Key Encryption Key (UKEK) to
be permanently stored in the radio even when all the
NOTICE:
The rekey operation failure indicates that
your radio does not contain the USK.
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