Figure a3.7.3 block diagram of fn5 – Oki B4100 User Manual
Page 454
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454 /
Figure A3.7.3 Block Diagram of FN5
TEL1
TEL2
T
RL7
F
IC
2
F
IC
1
D
SR
8
RL2
RL1
CML
S
AR
1
, AR
2
arresters
CN26/CN36
(F) (UK)
CN26, CN36
MUTE
IC
7
R
Q1, Q2
Q3
4
H
0
9
DBI
DP
IC5
IC
6
Q
C
11
C
31
R
590
RL3
T
1
C
E
MUTE
FICC
Receiving
sensitivity
Adj
PP
A
G
S5-1, 2
6
Constant
current
DC
current
Impedance
matching NT
5
R
Rp
S
RI
OH2
to Modem
RL6
Ring Detector
B
3
7
1
Shunt
TEL
CN1
LINE
CN2
(1/2)
CN2
(2/2)
OFF-HOOK
Detector
CN3
S5-3 to 6
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