Motorola APX 4000 User's Guide download pdf (Page 115)

Advanced Features

English

Requesting an Over-the-Air Rekey (ASTRO

Conventional Only)

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.

Procedure:

1 < or > to Reky.

2 Press the Menu Select button directly below Reky.

3 Press the PTT button to send the rekey request.

Press the PTT button again, or the Home or Emergency

button, to exit the feature and transmit in normal mode.

4 If the rekey operation fails, you hear a bad-key tone and the

display shows Rekey fail.

Note: The rekey operation failure indicates that your radio

does not contain the Unique Shadow Key (USK). This

key must be 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.

MDC Over-the-Air Rekeying (OTAR) Page

This feature allows 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.

Note: This feature must be preprogrammed by a qualified

radio technician. Check with your dealer or system

administrator for more information.

Infinite UKEK Retention

This feature enables Unique Key Encryption Key (UKEK) to be

permanently stored in the radio even when all of the encryption

keys is erased. Without this UKEK key, the radio could not be

over the air rekeyed.

Note: This feature must be preprogrammed by a qualified

radio technician. Check with your dealer or system

administrator for more information.





1 2 ... 110 111 112 113 114 115 116 117 118 119 120 ... 169 170

Comments to this Manuals

No comments

Motorola APX 4000 User's Guide Page 115

Comments to this Manuals

Related products and manuals for Two-way radios Motorola APX 4000