UX-68ES/F/GG/IT
FO-90IT
5. Externally connected TEL OFF HOOK detection circuit section
•
The circuit current detection is turned on together with OFF HOOK
of main body or OFF HOOK of externally connected TEL. ON of
CML OFF (HS=L) is judged as OFF HOOK of externally connected
TEL.
6. CI detection circuit
•
CI is detected by the photocoupler which is integrated in series in
the primary side TEL circuit well proven in the existing unit.
VOLUME SETTING
VOL A
OUTPUT
VALUE
(GP02)
X 0
1K
0
X 1
10K
1
X 2
39K
0
X 3
100K
1
X 4
200K
0
X 5
300K
1
X 6
470K
0
X 7
750K
1
4) Signal selection
The following signals are used to control the transmission line of TEL/
FAX signal. For details, refer to the signal selector matrix table.
[Control signals from output port]
Signal Name
CML
(The circuit is located
in the TEL/LIU PWB.)
SP MUTE
(The circuit is located
in the TEL/LIU PWB.)
TEL MUTE
DPON
(The circuit is located H: Line connect / Make
in the TEL/LIU PWB.)
DPMUTE
(The circuit is located H: Muting
in the TEL/LIU PWB.)
TXMUTE
(The circuit is located H: Muting
in the control PWB.)
VOL B
VOL C ON-HOOK ICM/OGM ICM/OGM
(GP03)
(GP04)
Receiving MONITOR
0
0
—
0
0
HIGH
1
0
MID 1
1
0
MID 2
0
1
MID 3
0
1
—
1
1
LOW
1
1
—
5 – 10
Description
Line connecting relay
H: Line make
L: Line break
Speaker tone mute control signal
H: Muting (Power down mode)
L: Muting cancel (Normal operation)
Handset reception mute control signal
H: Muting
L: Muting cancel
Connecting DC circuit and DP generating
L: Line disconnect / Break
Adjust the resistance during make ratio
L: Muting cancel
Tx route mute circuit
L: Muting cancel
PLAY
RINGER
—
HIGH
HIGH
HIGH
MIDDLE1
—
MID 1
MIDDLE2
—
MID 2
MIDDLE3
—
MID 3
LOW
MIDDLE
—
—
—
LOW
—
—
—
—
LOW
BUZZER DTMF/DP
—
—
—
—
—
—
—
—
—
—
—
FIXED
FIXED
—
—
—