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NATO RESTRICTED
SPENDEX 40 UA 8251/01
OPERATING MANUAL
5.4
Setting up of a Secure Call on the basis of a Net Variable
T h i s s e c t i o n d e s c r i b e s t h e a c t i o n s t o b e p e r f o r m e d i n o r d e r t o c h a n g e
f r o m a c l e a r c a l l t o a s e c u r e c a l l b a s e d o n a N e t v a r i a b l e . T h e
t r a n s i t i o n t o a s e c u r e c a l l b a s e d o n a N e t v a r i a b l e i s p o s s i b l e o n l y
i f t h e t e r m i n a l a t t h e o t h e r i s p r o v i d e d w i t h t h e s a m e N e t v a r i a b l e .
T h e i n i t i a t i v e t o g o o v e r t o a s e c u r e c a l l c a n b e t a k e n o n l y b y t h e
c a l l i n g p a r t y .
A c t i o n s
C a l l i n g t e r m i n a l
C a l l e d t e r m i n a l
LED
D i s p l a y
LED
D i s p l a y
S t a r t c o n d i t i o n s :
- CIK modules connected
- C l e a r c a l l c o n n e c t i o n
"NNNNNNNN"
"PLAIN
C a l l i n g t e r m i n a l :
1. Press NET key.
"COMPART?"
"PLAIN
2 . D i a l i n c o m p a r t m e n t
n u m b e r ( 0 0 . . . 1 9 ) .
"NETAB
"SECURE ?"
(See Note 1)
"PLAIN
3. Press SECURE push
b u t t o n , ( w i t h i n
5 seconds).
"WAIT
"SYNCAQ "
"SYNC ? "
"CRYPTO "
(Sc »e Note
"WAIT
i i * N E T
( " * E M G " )
"SYNC
"CRYPTO "
» 2)
Secure speech possible (see
Note 3)
A B = c o m p a r t m e n t n u m b e i : (AB = 00...19)
Note 1: If one wishes to correct the compartment number, then the
selected compartment number can be cancelled by pressing of
the NET key twice in succesion. In the display, "NO COMP "
then appears.
N o t e 2 : I f t h e a t t e m p t t o a c h i e v e s y n c h r o n i s a t i o n f a i l s , b o t h
t e r m i n a l s r e v e r t a u t o m a t i c a l l y t o c l e a r t r a f fi c ( b o t h
d i s p l a y s e x h i b i t " P L A I N " ) .
N o t e 3 : A r a p i d i n t e r m i t t e n t s i g n a l d u r i n g c o n v e r s a t i o n i n d i c a t e s
p r e - e m p t i o n ; fi n i s h c o n v e r s a t i o n i m m e d i a t e l y a n d g o o n h o o k .
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5-3
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