Panasonic KX-F1200 Service Manual And Technical Manual page 117

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b) P-xplai=ation ol Technology
(1) 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.
Transmitter Side
Phase A
Document set
Dial
Phase B
FAX SW
Checks the performance of the
sending machine (document width,
transmission speed, etc.), and sets
the communication mode.
Transmission Start
Phase C
Phase D
T
Phase E
Explanation of Signals
Transmission End
Information of Disconnect
Disconnect
Receiver Side
(CNG)
CED
,.11----
DIS
DCS
Training 1, TCF
CFR
Training 2
Image RTCInf°rmati°n
EOP
MCF
DCN
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
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
Function:
Notifies of capacity of receiving unit
The added data signals are as follows.
(Example)
Signal ..... DCS (Digital Command Signal)
Identification Signal Format ..... X1000001
(Example)
Bit No.
1
2
3
4
5
6
DIS/DTC
Transmitter - T. 2 operation
Receiver - T. 2 operation
T.2 IOC = 176
Transmitter - T. 3 operation
Receiver - T. 3 operation
Reserved for future T. 3 operation features
DOS
Receiver - T. 2 operation
T. 2 IOC = 176
Receiver -T. 3 operation
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