FO-71RA
FO-51RA
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]
5 – 10
5. CI detection circuit
•
CI is detected by the photo coupler which is integrated in series in
the primary side TEL circuit well proven in the existing unit.
6. Signal/DTMF transmission level & receiving level
•
Signal transmission level setting: According to soft switch list.
•
DTMF transmission level setting: According to soft switch list.
VOLUME SETTING
LINEOUT A
RCVOL DTME
(HIGH) (LOW)
MUTE
DTMF Transmission
Fixed
1
1
volume setting (Receiver)
Key buzzer volume setting Fixed
Speaker volume setting
Low
1
1
Middle
1
0
High
0
1
Ringer volume setting
Low
1
1
Middle
1
0
High
0
1
DTMF speaker volume
Low
1
1
setting
Middle
1
0
High
0
1
Signal Name
Description
CML
Line connecting relay and DP generating relay
(The circuit is located
H: Line make
in the TEL/LIU PWB.)
L: Line break
MIC MUTE
Handset transmission mute control signal
(The circuit is located
H: Muting
in the TEL/LIU PWB.)
L: Muting cancel
Handset reception mute control signal
TELMUTE
H: Muting
L: Muting cancel
DTMFMUTE control signal
DTMFMUTE
(The circuit is located
in the control PWB.)
Note: The DTMF sending listed above is DTMF signal
sending in the handset OFF-HOOK mode.
Volume
High
Middle
Low DTMF sending
DTMFMUTE
L
L
H
H
