Panasonic KX-F910BX Service Manual page 139

900mhz cordless fax
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KX-F910BX
(6) Explanation of Technology
@ G3 Communication Signals (T. 30 Binary Process)
In G3 Facsimile communication, this is the procedure for exchange of control signals between the sending and receiving
machines both before and after transception of image signals.
Control signals at 300 bps FSK are: 1850 Hz...0, 1650Hz...1.
An example of binary process in G3 communication is shown below.
Phase A
Checks the performance of the
sending machine (document width,
Phase B
transmission speed, etc.), and sets
the communication mode.
Phase C
Phase D
Information of Disconnect
Phase E
Explanation of Signals
Control signals are comprised mainly of 8-bit identification signals and the data signals added to them. Data signals
are added to DIS and DCS signals.
Signal.....DIS (Digital Identification Signal)
Identification Signal Format.....00000001
(Example)
Bit No.
Transmitter - T. 2 operation
1
Receiver - T. 2 operation
2
3
T.2 IOC = 176
4
Transmitter - T. 3 operation
Receiver - T. 3 operation
5
6
Reserved for future T. 3 operation features
Transmitter Side
Document set
Dial Tone
Dial
FAX SW
Transmission Start
Transmission End
Disconnect
Function:
Notifies of capacity of receiving unit
The added data signals are as follows.
DIS/DTC
Receiver Side
Bell
(CNG)
CED
DIS
DCS
Training 1, TCF
CFR
Training 2
Image Information
RTC
EOP
MCF
DCN
DCS
Receiver - T. 2 operation
T. 2 IOC = 176
Receiver - T. 3 operation
|148 |
Bell Detection
Notifies of capacity of
receiving unit (e.g. , recording
paper width, transmission speed).
Check the receive preparation
and line condition.
Receive preparation OK
Record Start
Record Stop
Reception OK
Disconnect

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