Motorola ASTRO XTL 2500, Руководство пользователя

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ASTRO XTL 2500 D i g ita l M o b i l e R adio
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S e c ure Op eration
System Considerations
• Trunked Systems only: If y ou p ress t h e PTT b utton wh en no
se c ure -v oi c e ch anne l is a v ai l a bl e , t h e dis pl a y s h o w s
NO SECURE
,
and a c ontinuous ta lk-p ro h i b it tone sounds unti l y ou re l ease t h e
PTT b utton .
• Analog trunking systems: Y ou are not allowed to ch an g e f ro m
a se c ure trans m ission to a cl ear trans m ission durin g a se c ure
trun k ed c a ll. If y ou atte mp t to ch an g e f ro m a se c ure to a cl ear
trans m ission durin g a c a ll, t h e radio g enerates a ta lk-p ro h i b it tone ,
and t h e dis pl a y w i ll s h o w
SEC ONLY
or
SECURE ONLY
.
• Digital trunking systems: Y ou are allowed to ch an g e f ro m a
se c ure trans m ission to a cl ear trans m ission durin g a se c ure
trun k ed c a ll.
Loss Indication
Wh en y ou p ress t h e PTT b utton wh i l e in t h e c oded m ode and w it h out
t h e en c r yp tion m odu l e c ontainin g a v a l id k e y, t h e s p ea k er g enerates
b ursts o f a l ert tones , and t h e dis pl a y s h o w s
KEY FAIL
unti l y ou
re l ease t h e PTT b utton .
Wh en t h e radio is f irst turned on , si x m ediu m-p it ch ed tones sound
and t h e dis pl a y m o m entari ly s h o w s
KEY FAIL
to indi c ate t h at t h e
en c r yp tion m odu l e does not c ontain a v a l id k e y f or t h e c urrent m ode .
If t h e p eriodi c k e yf ai l tone f eature is ena bl ed , si x m ediu m-p it ch ed
tones are g enerated e v er y f i v e to ten se c onds wh i l e t h e radio is not
trans m ittin g or re c ei v in g to re m ind y ou t h at t h e radio does not h a v e a
v a l id k e y f or t h e c urrent m ode . Th e k e yf ai l re m inder w i ll not sound
wh en t h e radio is in cl ear m ode .