Philips SPENDEX 40 Maintenance Manual page 4

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S P E N D E X 4 0 U A 8 2 5 1 / 0 0 A N D / O l L I M I T E D M A I N T E N A N C E M A N U A L
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Abbreviations
C I K C r y p t o I g n i t i o n K e y
C K G C h e c k K e y G e n e r a t o r
I V S N I n i t i a l Vo i c e S w i t c h e d N e t w o r k
K D C K e y D i s t r i b u t i o n C e n t r e
P K G P r i m a r y K e y G e n e r a t o r
P t t P r e s s t o t a l k
R K G R e c e i v e K e y G e n e r a t o r
STU-II Secure Telephone Unit (second generation)
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D e fi n i t i o n s
CIK-module:
Programmed module, unique per terminal, required for crypto operation.
Full Duplex:
Mode of transmission in which at both ends of a connection data are transmitted
and received simultaneously.
Half Duplex:
Mode of transmission in which alternately data are transmitted at one end of a
connection and received at the other.
KDC mode:
Encryption mode in which KDC call variables are used.
Net mode:
Encryption mode in which Net variables are used.
P u l s e D i a l l i n g :
Dialling mode in which during the dialling of a telephone number a series of
pulses is transmitted for each digit.
Secure Telephone Unit:
Speech Encryption/Decryption Equipment of the type TSEC/KY-71A.
Tone Dialling:
Dialling mode in which during the dialling of a telephone number 2 tones with
a different frequency are transmitted for each digit.
List of Effective Pages
P a g e n u m b e r s : i t o i i i
1- 1
2- 1 to 2- 3
3- 1 to 3- 7
4- 1 to 4-20
5- 1 to 5-14
6- 1 to 6-18
7- 1 to 7-14
9 9 2 2 1 5 4 1 3 4 3 1 i i i
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