Specifications

1999 CANON INC. CANON SUPER G3 FAX BOARD-F1 REV.0 MAY 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

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CHAPTER 2 OPERATION AND TIMING

E. Rapid Transmission

The FAX Board provides as many as five transmission modes: memory transmission, memory

full transmission, direct transmission (synchronized with page reading), rapid transmission, and

memory full rapid transmission. Of these, rapid transmission and memory full transmission are

executed as follows:

1. Outline

Rapid transmission is a mode of transmission which combines the advantages of direct

transmission and memory transmission. When a line connection has been made and the reception

capabilities of the receiving device has been confirmed by obtaining a DIS signal, all pages are read

and sent.

To start the mode, the transmitting device rings the receiving device. After receiving a DIS

signal, it starts to accumulate data (initially, it must be ready for fax communication).

The transmitting device reads pages without reference to transmission. For this reason, rapid

transmission requires less total communication time than direct transmission and less time than

memory transmission between the start of reading and the end of transmission.

a. Rapid Transmission

In this mode, reading starts without reference to transmission (non-synchronous) as soon as a

DIS signal is received in response to a ring and after a line connection.

b. Rapid Transmission (memory full)

This mode is initiated as in normal rapid transmission but in the event that the memory becomes

full. The pages that have been stored by advance reading will be transmitted, direct transmission

mode will be used for the subsequent pages. If the memory becomes full while reading the first

page, direct transmission will be used starting with the first page.

2. Conditions for Rapid Transmission

Rapid transmission is used for the following conditions (all conditions must exist at the same

time):

a. A single destination is used.

b. "rapid direct tx" is set to "Yes." (See the next page.)

c. Direct transmission is selected.

d. The stamping function is turned off.

e. No specific time has been specified.

Note:

If the stamping function is turned on, direct transmission will be used and a SENT stamp will be

put on the pages.