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SECTION
XVII
Generics of Data Communications
Front-end Network Processors
(FNPs)
A.
Generic Data Communications World Components
Block diagram of typical components
F"""@ '7
l
GD
Base
FNP
Terminal
Modem
\\\*
Modem
AT
ACU
f
Terminal
"Ode"
"Ode"
l
LIU
GPCB
Bypass
Bypass
4r
1 or
1 or
Wor
~
M
Direct
l
e
ore
Terminal
l
Connect
bi
@
' o
llDirect
Terminal
Connect
————J
o
,1__
a.
T
i
l
Modem
®
Modem
J
erm na
Bypass
Bypass
v
LIU
AC8
K
I
l or
1 org
T
.
l
M d
M d
More
More
ermina
o em
I \________'
o em
a
\.
I
.
l
ACU
I
Overall
FNP
L.__.__._..___
a Provided only in DN6624/6632
b In—plant connection.
Also obtainable by
current loop interface terminals.
Level
10M
Chan-
nel
Level
IOM
Chan-
nel
MSP
B.
Summary of functions of generic components and their
potential configuration effects.
1.
Based on block diagram above.
2.
A conceptual approach at this point. Actual sequence
of considerations may vary from that shown on block
diagram.
140
DH92.
Rev.
0
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