Setting Up Of A Secure Data Connection - Philips SPENDEX 40 Operating Instructions Manual

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SPENDEX 40 UA 8251/01
OPERATING MANUAL
5.5 Setting up of a Secure Data Connection
This section describes the actions to be performed in order to change
from a secure call to a secure data connection. The initiative to go
over to a secure data connection can be taken only by the calling
p a r t y.
Actions
Calling terminal
LED
Display
Called terminal
LED
Display
Start conditions:
- Data terminal equipment
connected and switched on
- Secure call connection
"CRYPTO " "CRYPTO "
Calling terminal:
1. Press DTE key.
Secure data transmission
possible (see Note 2)
In case a secure call is
wanted again, proceed
as follows:
Calling terminal:
1. Press DTE key.
X
"SYNCAQ
"SYNC ?
"CRYPTO
"RESYNC
X
"SYNC
"CRYPTO "
(See Note 1)
"SYNCAQ "
"SYNC ? "
"CRYPTO "
"RESYNC "
" * "
"SYNC
"CRYPTO "
(See Note 1)
I I
- NET or EMG
Note 1: If the attempt to achieve synchronisation fails, both
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 " ) .
Note 2: A rapid intermittent signal during data transmission
indicates pre-emption; finish data transmission immediately
and go on hook.
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