A R I A B L E; S E T T I N G U P O F A S E C U R E C A L L O N T H E B A S I S O F T H E N E T Va R I A B L E - Philips SPENDEX 40 Operating Manual

SPENDEX 40 UA 8251/00
NATO RESTRICTED
OPERATING MANUAL
5.5
S e t t i n g u p o f a S e c u r e C a l l o n t h e B a s i s o f t h e N e t Va r i a b l e
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 t h e 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 t h e N e t v a r i a b l e i s p o s s i b l e
only if the terminal at the other end (SPENDEX 40 or STU-II) is also
p r o v i d e d w i t h t h 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
(if SPENDEX 40)
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
" NNNNNNN"
"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
number 00.
"NETOO
"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 "
(S€ .e Note
"WAIT
" * E M G "
"SYNC
"CRYPTO "
* 2)
Secure speech possible (see
Note 3)
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 succession. In the display, "NO C0MP "
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 .
9922 154 12551
5-4
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