Toshiba GD-1160, GD-1260, GD-1201 When this frame is the last frame, X =, Fcf Fif Fcs, Format

Models: GD-1151 Model: GD-1150 GD-1201 GD-1260 GD-1160

1 90
Download 90 pages 1.91 Kb
Page 46
Image 46

(3)Frame structure of binary signals

Each binary signal frame is comprised of the following sequence and fields. However, some binary signals do not have the FIF field inserted.

F

F

A

C

FCF

FIF

FCS

F

Preample

F : Flag sequence

Indicates the start or end of a frame. Also establishes the frame synchronization.

A : Address field

Informs the address.

C : Control field

Informs if this frame is the last one in this procedure.

FCF: FAX control field

Informs the type of the binary signal.

FIF: FAX information field

Informs FAX information such as the functions.

FCS: Frame check sequence

Checks if there was any error in the transmission from A to FIF.

Format of F, A and C

 

 

 

 

 

Format

 

 

 

 

 

 

 

 

 

 

 

 

 

 

b1

b2

b3

b4

 

b5

b6

b7

b8

F

0

1

1

1

 

1

1

1

0

 

 

 

 

 

 

 

 

 

 

A

1

1

1

1

 

1

1

1

1

 

 

 

 

 

 

 

 

 

 

C

1

1

0

0

 

x

0

0

0

 

 

 

 

 

 

 

 

 

 

*When this frame is the last frame, X = 1.

GD-1150/1151/1200/1201/1160/1260

© 2003 - 2008 TOSHIBA TEC CORPORATION All rights reserved

DIALING/COMMUNICATION CONTROL

 

3 - 10

Page 46
Image 46
Toshiba GD-1160, GD-1260, GD-1201, GD-1151, Model: GD-1150 When this frame is the last frame, X =, Fcf Fif Fcs, Format