10
KX-TG3721BX/KX-TG3722BX/KX-TGA371BX
4.3.
Tel Interface Circuit
TX
AMP
SIDE TONE
RX
AMP
CONTROL
CIRCUIT
CALLER ID
DETECT
BELL
DETECT
L102
SA103
P101
R141
R142
3
4
2
1
C101
D101
Q141
C102
R101
C103
R102
L101
SA101
TIP
RING
REGULATOR
C104
C105
C106
R103
R105
C107
R104
C108
R106