Table of Contents
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R113
C109
R112
6
7
IC101
5
R110
R111
C113
C127
R109
11
RELAY
IC103
C112
10
A
LINERX
CN102
10
10
CN9
IC6
Analog Front End
11
10
(IC5)
MOM RX ENB
TEL RX ENB
VOL
ASIC (IC1)
MODEM
R14
R11
R15
C107
R104
R102
Q7
C111
R107
R103
R13
T101
C105
R105
R108
C106
R106
LINETX
1
Analog Board
4
To
A
IC103
Digital Board
MTX ENB
R217
8
H/STX
C220
PC2-3
Q202
H/STX
MUTE
10
H/SRX
C234
R216
Q203
H/SRX ENB
IC102
SP AMP
SPOUT
9
CN202
SP-MUTE
5V
R9
R8
PC2
Q6
C7
Q202, Q203
D1
Q4
C8
5
7
R12
4
+5VD
C9
2
PC1
D4
BREAK
C117
Q3
R117
T102
C116
C14
C126
3
1
2
R116
R19
CN201
C214
R205
C207
L201
R212
C212
L204
L202
R204
C206
L203
R214
C205
R206
R208
Q201
R209
C209
R207
SPEAKER
CN101
R234
SW202
R235
RLY1
CN1
F1
LF1
6
SA1
3
POS1
+24VD
SA2
RLY1
RELAY
Q2
CN2
L5
R16
L6
R18
C13
C12
BELL
PC5
HANDSET
R232
HOOK-IN
PAPER
SW201
R233
C229
C228
a
b
a
b
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