UX-108DE
5 – 10
(Example: Fax signal send)
8. Cl detection circuit
The CI detection circuit detects the CI signals. A CI signal, which is pro-
vided to the photo-coupler PC6 through the C4 (0.56
µ
F), R2 (10 K),
and ZD3 when the ring signal is inputted from the telephone line.
9. Power supply and bias circuits
The voltages of +5V and +24VA are supplied from the control PWB unit.
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.
[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]
NO
Signal Name (CNLIUB)
NO
Signal Name (CNLIUB)
1
RXMUTE
3
DPMUTE
2
DPON
4
E-RLY
NO
Signal Name (CNLIUA)
NO
Signal Name (CNLIUA)
1
TELOUT
7
RXIN
2
TELIN
8
TXOUT
3
TELMUTE
9
CML
4
CI
10
+24VA
5
HS
11
+5V
6
RHS
12
DG
H
L
CML
CI DETECTOR
0
1
SPEAKER
TEL
LINE
+5V
+24VA
DG
RX MUTE
CI
RX MUTE
SP MUTE
CI
BZCONT
TXCONT
BZCONT
VOL C
VOL B
VOL A
TELOUT
TEL IN
EXT.
HANDSET
RXIN
TXOUT
CML
TXCONT
SIGTX
SIGRX
0
1
0
1
GAIN-C
CML
XFC3
MODEM
(R96DFXL-CID)
CONTROL PWB
TEL/LIU PWB
DP GEN.
DP ON
RHS
RHS
DP ON
Содержание UX-108
Страница 27: ...UX 108DE 2 18 M E M O ...
Страница 40: ...UX 108DE 3 13 M E M O ...
Страница 61: ...6 7 UX 108DE Control PWB parts layout Top side ...
Страница 62: ...6 8 UX 108DE Control PWB parts layout Bottom side ...
Страница 65: ...6 11 UX 108DE TEL LIU PWB parts layout Top side ...
Страница 66: ...6 12 UX 108DE TEL LIU PWB parts layout Bottom side ...
Страница 68: ...6 14 UX 108DE Power supply PWB parts layout ...