Codan 2110 series Reference Manual page 321

Programming the transceiver
To program the transceiver with a text file containing secure keys:
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Manpack Transceiver 2110 series Reference Manual
Send the file containing the secure keys as a text file to the transceiver.
The transceiver is updated dynamically. You do not have to restart the transceiver.
If you have used the csstart and csstop commands, observe the
NOTE value in the checksum displayed at the terminal. The checksum must
be the same each time the same file is transferred to a transceiver.
If the file has not been transferred correctly, reduce the data rate for
NOTE the COM port on the computer and the RS232 port on the transceiver
to 2400 b/s.
Check that the transceiver has received the secure keys by holding SEC, then
scrolling to the Select Key entry to see that the number of available secure indexes
matches the number of secure keys programmed in the text file.
Program any other transceivers with the same text file, as required.
Check that secure communication is possible between transceivers.
AES-256 digital voice encryptor option
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