KX-FT21RS

Phase D is the procedure for confirming that the message is completed and received. For continuous transmission, phase B or phase C are 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 in fact sent, and to check for telephone reservations and/or the existence of continuous transmission.

5. Facsimile Standards

 

Telephone Network Facsimile

Item

G3 Machine

Connection Control Mode

Telephone Network Signal Mode

Terminal Control Mode

T. 30 Binary

Facsimile Signal Format

Digital

Modulation Mode

PSK (V. 27 ter) or QAM (V. 29)

Transmission Speed

300 bps (Control Signal)

 

2400, 4800, 7200, 9600 bps (FAX Signal)

Redundancy Compression

1 dimension: MH Mode

Process

2 dimension: MR Mode (K=2.4)

(Coding Mode)

 

Resolution

Main Scan: 8 pel/mm

 

Sub Scan: 3.85, 7.7l/mm

Line Synchronization Signal

EOL Signal

1 Line Transmission Time

Depends on the degree of data reduction.

[ms/line]

Minimum Value: 10, 20

 

Can be recognized in 40ms.

6.Explanation of 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 the binary process in G3 communication is shown below.

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Panasonic KX-FT21RS Concerning Transmission Time, Control time, Image transmission time, Hold time, Facsimile Standards