Panasonic KX-TDA0174 Service Manual page 32

CODEC EXTENTION
PORT
EXT4
CODECIC202
EXT5
EXT6
EXT7
PIN No. SIGNAL
NAME
SO1_1
SO1_0 BELL4
SB1_2
SB1_1
SB1_0
SI1_1 HOOK4
SI1_0 DT_EST4
SO2_1
SO2_0 BELL5
SB2_2
SB2_1
SB2_0
SI2_1 HOOK5
SI2_0 DT_EST5
SO3_1
SO3_0 BELL6
SB3_2
SB3_1
SB3_0
SI3_1 HOOK6
SI3_0 DT_EST6
SO4_1
SO4_0 BELL7
SB4_2
SB4_1
SB4_0
SI4_1 HOOK7
SI4_0 DT_EST7
32
I/O ACT DESCRIPTIONS
O
O H Ringer output
O
O H
O
I L Off-hook detection
I H DTMF detection
O
O H Ringer output
O
O H
O
I L Off-hook detection
I H DTMF detection
O
O H Ringer output
O
O H
O
I L Off-hook detection
I H DTMF detection
O
O H Ringer output
O
O H
O
I L Off-hook detection
I H DTMF detection
NOTES
L (Fixed)
+5V pull up
+5V pull up
L (Fixed)
+5V pull up
+5V pull up
L (Fixed)
+5V pull up
+5V pull up
L (Fixed)
+5V pull up
+5V pull up