ENCRYPTION
CES-128 VOICE ENCRYPTION
ENVOY™ TRANSCEIVER REFERENCE MANUAL 349
1 If you are using a 2221 Handset, do the following to exit secure standby mode
and return to secure mode:
•Press (Options).
• Press or to scroll to the Standby Off option.
•Press (Select).
Related links:
Switching the secure feature on or off on page 77
Setting the duration of secure standby for a Selcall HF network
If your HF communication network operates with the Codan Selcall call system, you
will not hear revertives from the called station when secure mode is active. You can
set a brief period following a call made in a Codan Selcall HF network during which
the transceiver enters secure standby, receives revertives, then returns to secure mode.
The transceiver returns to secure mode after any one of the following:
• the end of the period is reached
• you press PTT to begin transmission
• you receive encrypted audio from another station
The time required depends on the length of time the called station takes to tune the
antenna, typically 12 to 15 seconds.
To set the duration of secure standby after a call in a Codan Selcall HF network:
1 From the main menu, select (Settings), then (Security).
1 Press or to scroll to the Standby After Selcall entry.
1 Press or to select the value that you want to set, or enter the number directly.
1 Press (Save) to save the information.
1 Press (Close).
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