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UX-A450DE/IT/H
NX-A550DE/IT/FO-A650IT
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.
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
Line connecting relay and DP generating relay
H: Line make
(The circuit is located
L: Line break
in the TEL/LIU PWB.)
SP MUTE
Speaker tone mute control signal
H: Muting (Power down mode)
(The circuit is located
L: Muting cancel (Normal operation)
in the TEL/LIU PWB.)
Handset reception mute control signal
TELMUTE
H: Muting
L: Muting cancel
Handset receiver volume control signal
Volume
DTMFMUTE
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 SETTING
Key buzzer volume setting Fixed
Speaker volume setting
Level1
Level2
Level3
Level4
Level5
Ringer volume setting
Low
Middle
High
DTMF speaker volume
Level1
setting
Level2
Level3
Level4
Level5
OGM playback speaker
Level1
volume setting
Level2
Level3
Level4
Level5
ICM record speaker
Level1
volume setting
Level2
Level3
Level4
Level5
Description
High
Middle
Low DTMF sending
L
L
H
H
LINEOUT A
RCVOL DTME VOL A VOL B
(HIGH) (LOW)
MUTE
VOL C
1
1
1
0
1
1
0
0
1
1
1
0
0
1
0
1
0
0
1
1
1
0
0
1
0
0
0
1
0
1
1
0
1
1
0
1
1
0
1
1
0
1
0
0
1
1
1
0
0
1
0
1
0
0
0
0
0
0
0
1
1
1
0
0
1
0
1
0
0
0
0
0
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