GD-1150/1151/1200/1201/1160/1260
© 2003 - 2008 TOSHIBA TEC CORPORATION All rights reserved
DIALING/COMMUNICATION CONTROL
3 - 10
(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.
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
* When this frame is the last frame, X = 1.
F
F
A
C
FCF
FIF
FCS
F
Format
b
1
b
2
b
3
b
4
b
5
b
6
b
7
b
8
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
Содержание GD-1151
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