Samsung Ubigate iBG2016 Configuration Manual page 516

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CHAPTER 5. Analog Voice Port

Loop Start Signaling

Hooking off handset makes a circuit close, and off-hook status is detected,

while submarine sends dial tone. Also it sends on/off pattern ring to receive

1) Idle state

2) Hook-Off state

is generally used in Analog FXS/FXO instead of Ground-start.

Analog FXS Interface or

module in submarine

Analog FXS Interface or

module in submarine

Figure 5.1 Loop Start Signaling

Telephone set or PBX

Telephone set or PBX

(loop broken)

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