VOL.2-616
MG-COT Card [SCA-6COTB]
Power Failure Transfer (PFT)
MG-COT has six MG (COT) ports and one PFT port. PFT connects the PFT port to one MG port (MG0)
directly when some failure has occurred. Therefore, analog terminal is connected to PSTN network and
then call origination to C.O. line becomes available. PFT is activated in following cases.
•
Power failure of MG-COT
→
immediately switched to PFT, PFT line becomes available.
•
IP link failure
→
depending on the connection status when health check time-out timer (150 sec-
onds) expires;
(a) when any calls are not in progress on MG-COT: immediately switched to PFT
→
PFT line be-
comes available.
(b) when any calls are in progress on MG-COT: switched to PFT after cutting off MG side
→
PFT
line becomes available.
Note:
The PFT service is not available for the UG50.
Connecting Diagram of PFT Function
Release of PFT
PFT is released under the following conditions:
•
After rebooting, IP link with the Telephony Server is established
•
Release of the lines activating over PFT function are supervised.
COT
PFT
MG0
MG1
PFT
MG-COT
IP Network
Change over when failure occurs.
COT: Central Office Trunk
PFT: Power Failure Transfer
MG2
MG3
MG4
MG5
PSTN
VoIP CODER
Interface to LAN
Summary of Contents for SV8500
Page 1: ...Peripheral Equipment Description NWA 041680 001 ISSUE 12 0 FP85 110 S7 ...
Page 110: ...VOL 1 50 CHAPTER 1 DEVICES REQUIRED TO BUILD NETWORK Network Services List Box Example ...
Page 253: ...VOL 2 xiv TABLE OF CONTENTS CONTINUED Page ...
Page 292: ...VOL 2 39 Zone Transceiver ZT LEDs on the Zone Transceiver POWER STATUS Power lamp Status lamp ...
Page 1854: ...VOL 2 1601 MG SIP96 Port Settings tab opens Set the values as the following figure shows ...
Page 2721: ...VOL 3 234 CHAPTER 2 TERMINAL RELATED DEVICES Mounting of BATT BOX ASSEM Cover BATT BOX ASSEM ...
Page 3113: ...VOL 3 626 CHAPTER 4 CONFIGURATION SETUP b English Sm Lower case ...
Page 3114: ...VOL 3 627 CHAPTER 4 CONFIGURATION SETUP c Turkish Bg Upper case d Turkish Sm Lower case ...
Page 3115: ...VOL 3 628 CHAPTER 4 CONFIGURATION SETUP e Russian Bg Upper case f Russian Sm Lower case ...
Page 3118: ...VOL 3 631 CHAPTER 4 CONFIGURATION SETUP b English Sm Lower case ...
Page 3119: ...VOL 3 632 CHAPTER 4 CONFIGURATION SETUP c Turkish Bg Upper case d Turkish Sm Lower case ...
Page 3120: ...VOL 3 633 CHAPTER 4 CONFIGURATION SETUP e Russian Bg Upper case f Russian Sm Lower case ...
Page 3438: ...Printed in Japan 1307 120 ...