3.12 Power Failure Connections
3.12.1 Power Failure Connections
When the power supply to the PBX fails, power failure transfer (PFT) will switch from the current connection
to the Power Failure Connection. Refer to "2.4.1 Power Failure Transfer" in the Feature Guide for further
information.
Using Analogue Trunk Card and Extension Card
Power Failure Connection connects a specific SLT and a trunk in the event of power failure. The following
analogue trunk and extension card can be used for Power Failure Connections:
• Analogue trunk card: LCOT4 (1 PFT port)
• Extension card:
DHLC4 (1 PFT port)
To 1 analogue trunk card, connect only 1 extension card.
Note
By programming the PBX, a trunk conversation established during power failure can be maintained even
when the power returns and the connection is switched back to the normal configuration from the Power
Failure Connection. However,
if no special programming is performed, the connection will be dropped when
power returns.
RJ45
RT
TR
Extension Card
(DHLC4)
Trunk Card
(LCOT4)
To trunk
To SLT
Accessories and User-supplied Items
Accessories (included): none
User-supplied (not included): RJ45 connectors
122 Installation Manual
3.12.1 Power Failure Connections
To Next Page
Loading...
