UX-108U/178U/188U
FO-375U
(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]