CHAPTER 5. Analog Voice Port
464
© SAMSUNG Electronics Co., Ltd.
Figure 5.3 Ground-start signaling for Analog FXS (seizure-state)
1) Incoming call
Analog FXS Interface or
module in submarine
Ring
Generator
-48DC
Battery
Tip
Ring
- PBX grounds the
ring line
to indicate
to the Analog FXS
that there is an
incoming call
Tip
Detector
PBX CO
Analog FXS Interface or
module in submarine
Ring
Generator
-48DC
Battery
Tip
Ring
Tip
Detector
- the Analog FXS
grounds the
tip line
and then
superimposes a
20-Hz 90-VAC ringing
voltage over the
ring
line
to alert the PBX
of an incoming call.
PBX CO
2) Outgoing call
Содержание Ubigate iBG2016
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