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2.12 Power Failure Connections
Installation Manual 205
2.12 Power Failure Connections
2.12.1 Power Failure Connections
When the power supply to the Hybrid IP-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.
Power Failure Connection is required to implement this feature.
Note
While DC power is provided by the backup batteries, the Hybrid IP-PBX will remain fully operational and
the connection will not switch to the Power Failure Connection.
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 cards can be used for Power Failure Connections:
• Analogue trunk cards: LCOT16 (4 PFT ports), LCOT8 (2 PFT port), and LCOT4 (2 PFT port)
• Extension cards: MSLC16 (4 PFT ports), SLC16 (4 PFT ports), DHLC8 (2 PFT port) and SLC8
(2 PFT port)
To 1 analogue trunk card, connect only 1 extension card.
Note
By programming the Hybrid IP-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.
Accessory and User-supplied Items
Accessory (included): none
User-supplied (not included): RJ11 connectors
Trunk Card
(e.g., LCOT8)
Extension Card
(e.g., SLC8)
R2
R1
T1
T2
T2
T1
R1
R2
RJ11
To trunk To SLT