Panasonic KX-TDA0170 Service Manual page 36

IC No. Pin No. Pin
name
IC251 40 SO1_1
41 SO1_0
37 SB1_2
38 SB1_1
39 SB1_0
35 SI1_1
36 SI1_0
43 SO2_1
42 SO2_0
46 SB2_2
45 SB2_1
44 SB2_0
48 SI2_1
47 SI2_0
6 SO3_1
7 SO3_0
3 SB3_2
4 SB3_1
5 SB3_0
1 SI3_1
2 SI3_0
9 SO4_1
8 SO4_0
12 SB4_2
11 SB4_1
10 SB4_0
14 SI4_1
13 SI4_0
Signal I/O ACT
name
O
BELL0 O
I
DIAG0 O
O
HOOK0 I
EST0 I
O
BELL1 O
I
O
O
HOOK1 I
EST1 I
O
BELL2 O
I
O
O
HOOK2 I
EST2 I
O
BELL3 O
I
O
O
HOOK3 I
EST3 I
36
Description
- EXT0 Not used
H Bell signal issue
H Not used
H Self-diagnosis switching
H Not used
L Off-hook detection
H DTMF detection
- EXT1 Not used
H Bell signal issue
H Not used
H Not used
H Not used
L Off-hook detection
H DTMF detection
- EXT2 Not used
H Bell signal issue
H Not used
H Not used
H Not used
L Off-hook detection
H DTMF detection
- EXT3 Not used
H Bell signal issue
H Not used
H Not used
H Not used
L Off-hook detection
H DTMF detection
Remarks