CHAPTER 5. Analog Voice Port
462
© SAMSUNG Electronics Co., Ltd.
Loop Start Signaling
Loop-start
is generally used in Analog FXS/FXO instead of Ground-start.
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
dial tone.
Figure 5.1 Loop Start Signaling
1) Idle state
Analog FXS Interface or
module in submarine
Telephone set or PBX
Ring
Generator
-48DC
Battery
Tip
Ring
Opened
(loop broken)
2) Hook-Off state
Analog FXS Interface or
module in submarine
Telephone set or PBX
Ring
Generator
-48DC
Battery
Tip
Ring
Closed
(loop hold)
Summary of Contents for Ubigate iBG2016
Page 1: ......
Page 16: ...INTRODUCTION XIV SAMSUNG Electronics Co Ltd This page is intentionally left blank ...
Page 34: ......
Page 62: ...CHAPTER 4 System Logging 28 SAMSUNG Electronics Co Ltd This page is intentionally left blank ...
Page 70: ......
Page 108: ......
Page 140: ...CHAPTER 4 RIP 104 SAMSUNG Electronics Co Ltd This page is intentionally left blank ...
Page 156: ...CHAPTER 6 BGP 120 SAMSUNG Electronics Co Ltd This page is intentionally left blank ...
Page 180: ...CHAPTER 8 VRRP 144 SAMSUNG Electronics Co Ltd This page is intentionally left blank ...
Page 264: ...CHAPTER 10 QoS 228 SAMSUNG Electronics Co Ltd This page is intentionally left blank ...
Page 272: ......
Page 298: ...CHAPTER 3 Firewall NAT 248 SAMSUNG Electronics Co Ltd This page is intentionally left blank ...
Page 356: ...CHAPTER 5 IPSEC 306 SAMSUNG Electronics Co Ltd This page is intentionally left blank ...
Page 358: ......
Page 744: ...EQBD 000071 Ed 00 ...