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UX-258TH
FO-475TH
TX/RX SIGNAL
OGM/ICM/MEMO/PLAYBACK SIGNAL
OGM/MEMO/RECORD SIGNAL
SIGTX
SIGRX
MODEM
(R96V24)
SP AMP
4051
CI DETECTOR
HS DETECTOR
TEL LINE
EXT
+5V
+24
DG
CI
TEL MUTE
RHS
HOOK SW
HANDSET
SPEAKER
TELIN
TELOUT
RXIN
TXOUT
HS
CML
CONTROL PWBTEL/LIU PWB
VOL A
VOL B
VOL C
BZCONT
TXCONT
RXCONT
MONITOR
BZCONT
RCVOL
SP MUTE
TEL MUTE
CI
GAIN-C
CML
HS
4053
1
0
1
0
GAIN-C
TXCONT
0
1
1
0
10
0
1
FC200
H
L
(Example: TEL speaking)
NO Signal Name (CNLIU) NO Signal Name (CNLIU)
1 TELOUT 7
RXIN
2 TELIN 8 TXOUT
3 TELMUTE 9 CML
4 CI 10 +24VA
5
HS 11 +5V
6 RHS 12 DG
Fig. 6
Signal Name Function
RHS
H: The handset is in the on-hook state.
L: The handset is in the off-hook state.
CI Incoming call (CI) detection signal
HS
H: The handset or external telephone is in the
on-hook state.
L: The handset or external telephone is in the
off-hook state.
[Signals for status recognition according to input signals]
Signal Name Function
TEL IN Receiving signal from line or modem
TEL OUT Transfer signal to line
SPOUT Speaker output signal
TXOUT
Transmission (DTMF) analog signal output
from modem
RXIN
Reception (DTMF, others) analog signal
input
into modem
[Other signals]
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