User`s guide

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in progress is allowed to unmute before establishing whether the call
is a secure call. Enabling this field also allows calls to unmute 180 to
360 ms earlier than without this field enabled.
It is recommended that this feature only be used on non-secure
channels because radios receiving secure calls will unmute to
unintelligible audio until the call is recognized as secure. The factory
default is Disabled.
Talkgroup This field is displayed for radios equipped with CAI Digital Operation only.
This field enables/disables Talkgroup operation for the current
personality. When enabled, function key F6 (TALK GROUP) can be
used to reach the ASTRO Conv Talkgroup Options screen. The factory
default is Disabled.