2. Making a Telephone Call
2-1. Manual Dialling from the External Telephone
In standby mode, the line is connected to the external telephone. Then the user can dial from the external handset.
If the user presses Start to send or receive a fax message, the TF relay switches up to connect the line to the mo-
dem.
2-2. Manual Dialling from the Built-in Telephone
There are two ways to dial manually from the built-in telephone: handset mode and on-hook mode.
Handset mode:
When the user
picks up the handset, the Hook
Switch goes up to connect the line
to the dialler and speech circuit.
The digits dialled at the dialpad are
directly informed to the dialler, and
the dialler dials the number and
passes them to the FCE to indicate
the dialled number on the LCD
(RF02F/FAX240F). If the user
presses Start to send or receive a
fax message, the TF relay switches
up to connect the line to the modem
on the FCE.
On-hook mode:
When the user
presses the On Hook Dial key, the
OH relay switches up to connect the
dialler to the line. Then the dialler
acts in the same way as explained for handset mode.
LIU
OPU
FDU/FCE
LEDs
Other Keys
Dialler
PCD3344
Pulse/Tone
GS/Flash
Photocoupler
Speech
Circuit
GND Start
Off-hook/
Fax-Tel
Relays
To/From
the Line
Handset
12 Keys
Dialpad
Country
Code-2
R894 - 897
Country
Code-1
D882 - 886
LIU/OPU Block Diagram - RF01F
LIU
OPU
FDU/FCE
LCD
LEDs
Other Keys
IC601
T7931
Dialler
PCD3344
Pulse/Tone
GS/Flash
Photocouplers
Speech
Circuit
GND Start
Off-hook/
Fax-Tel
Relays
To/From
the Line
Handset
12 Keys
Dialpad
Country
Code
D882 - 886
LIU/OPU Block Diagram -
A-2