System Considerations - Motorola ASTRO XTLTM 5000 User Manual

Digital mobile radio control heads
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System Considerations

Trunked Systems only: If you press the PTT button when no
secure-voice channel is available, the display shows NO SEC (W4,
W5, W7) or NO SECURE (W9), and a continuous talk-prohibit tone
sounds until you release the PTT button.
Analog trunking systems: You are not allowed to change from
a secure transmission to a clear transmission during a secure
trunked call. If you attempt to change from a secure to a clear
transmission during a call, the radio generates a talk-prohibit tone,
and the display will show SEC ONLY or SECURE ONLY .
Digital trunking systems: You are allowed to change from a
secure transmission to a clear transmission during a secure
trunked call.
ASTRO XTL 5000 Digital Mobile Radio with W4, W5, W7, and W9
Secure Operation
87

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