7-3-1. LIU - Line
LIU: P801
No
Name
Function
V
1
no, connection No connection
0
2
A2
External phone tip
L
3
LA
Phone line tip
L
4
LB
Phone line ring
L
5
B2
External phone ring
L
6
GND
Tel Ground
0
7-3-2. LIU - Handset
LIU: P802
No
Name
Function
V
1
MIC-
Microphone -
0
2
EAR-
Speaker -
0
3
EAR+
S
0
4
MIC+
Micr
0
7-3-3. LIU - FCE
P803: See FCE P431 (section 7-1-4).
7-3-4. LIU - FDU
P804: See FDU P362 (section 7-2-15).
7-3-5. LIU - HSB (Hook Switch 1)
LIU: P805
No
Name
Function
V
1
SW2-2
Connection to the
handset
0
2
SW2-1
Connection to the ring
detection circuit
L
3
SW2
Connection from the line
L
4
SW1-2
Connection to the
handset
0
5
SW1-1
Connection to the ring
detection circuit
L
6
SW1
Connection from the line
L
7-3-6. LIU - HSB (Hook Switch 2)
LIU: P806
No
Name
Function
V
1
HOOK1
Handset off-hook
0
2
HOOK2
Ground
0
7-3-7. LIU - HSB (Ringer)
LIU: P830
No
Name
Function
V
1
BZ1
Ringer drive
0
2
BZ2
Ground
0
7-3-8. LIU - OPU Dialpad
LIU: P881
No
Name
Function
V
1
LSWS5
Key input
5
2
LSWS4
Key input
5
3
LSWS3
Key input
5
4
LSWS2
Key input
5
5
LSWS1
Key input
5
6
LSWC1
Common signal to the
dialpad
C
7
LSWC2
C
8
LSWC3
C
Note:
"V" is the level of the signal after power on.
C: Clock (0 - 5V)
X: Analog (0 - 5V)
S: Country code setting (0 - 5V)
L: Telephone line
*: FAX240F only
7-9
