Panasonic KX-FLB852CX Service Manual page 278

KX-FLB852CX / KX-FLB852CXS
Phase C is the procedure for the transmitting facsimile messages.
Phase D : Post message procedure
Phase D is the procedure for confirming that the message is completed and received. For continuous transmission, phase B
or phase C is repeated for transmission.
Phase E : Call retrieval
Phase E is the procedure for call retrieval, that is for circuit disconnection.
4. Concerning Transmission Time
Transmission Time = Control Time + Image Transmission Time + Hold Time
Transmission time consists of the following.
Control time:
This is time at the start of transmission when the functions at the sending and receiving sides are confirmed, the
transmission mode is established, and transmission and reception are synchronized.
Image transmission time:
This is the time required for the transmission of document contents (image data). In general, this time is recorded in the
catalog, etc.
Hold time:
This is the time required after the document contents have been sent to confirm that the document was actually sent, and
to check for telephone reservations and/or the existence of continuous transmission.
5. Facsimile Standards
Connection Control Mode
Terminal Control Mode
Facsimile Signal Format
Modulation Mode
Transmission Speed
Redundancy Compression
Process
(Coding Mode)
Resolution
Line Synchronization Signal
1 Line Transmission Time
[ms/line]
6. Explanation of Communication and Compression Technology
a. G3 Communication Signals (T. 30 Binary Process)
For G3 Facsimile communication, this is the procedure for exchanging control signals between the sending and receiving
machines both before and after transmission of image signals.
Control signals at 300 bps FSK are: 1850 Hz...0, 1650Hz...1.
An example of a binary process in G3 communication is shown below.
Item
Telephone Network Signal Mode
T. 30 Binary
Digital
PSK (V. 27 ter) or QAM (V. 29)
300 bps (Control Signal)
2400, 4800, 7200, 9600, 12000, 14400 bps (FAX Signal)
1 dimension: MH Mode
2 dimension: MR Mode (K=2.4)
Main Scan: 8 pel/mm
Sub Scan: 3.85, 7.7l/mm
EOL Signal
Depends on the degree of data reduction.
Minimum Value: 10, 20
Can be recognized in 40ms.
Telephone Network Facsimile
G3 Machine
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