3.2Signaling System Diagram and Signal Forms

3.2.1Circuit control signals

The following circuit control signals are used in the binary and tonal procedures.

Circuit control signals

CED

Called station identification

 

Indicates that the sender is a FAX machine in the automatic called

 

mode. (*1)

 

 

CNG

Calling tone

 

Indicates that the sender is a FAX machine in the automatic calling

 

mode. (*1)

 

 

*1: This signal can be sent manually.

• Signal form

Signal name

 

Signal form

 

 

Signal form

 

 

 

 

 

 

 

 

 

 

CED

 

 

 

 

 

 

 

 

f: 2100 ±15 Hz

 

 

 

 

f

 

 

t: 2.6 - 4.0 sec

 

 

 

 

 

 

 

 

 

 

 

 

 

 

t

 

 

 

 

 

 

 

 

 

 

 

 

 

CNG

 

 

 

 

 

 

 

 

f: 1100 ±38 Hz

 

 

f

f

t: 0.5 sec ±15%

 

 

 

 

 

 

 

(L: 3 sec)

 

 

 

 

L

 

 

 

 

 

t

t

 

 

 

 

 

 

 

 

 

 

 

3

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

 

DIALING/COMMUNICATION CONTROL

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Toshiba Model: GD-1150 Signaling System Diagram and Signal Forms, Circuit control signals, Signal name Signal form