2.11 Power Failure Connections
Installation Manual 151
2.11 Power Failure Connections
2.11.1 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.
Connection
Power Failure Connection connects a specific SLT and a CO line in the event of power failure. The following
CO line and extension cards can be used for Power Failure Connections:
• Analog CO line cards: LCOT16 (4 PFT ports), and LCOT8 (2 PFT port), port)
• Extension cards: MSLC16 (4 PFT ports), SLC16 (4 PFT ports), DHLC8 (2 PFT port) and SLC8
(2 PFT port)
To 1 analog CO line card, connect only 1 extension card.
Note
By programming the Hybrid IP-PBX, a CO line 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
R2
R1
T1
T2
T2
T1
R1
R2
RJ11
CO Line Card
(e.g., LCOT8)
Extension Card
(e.g., SLC8)
To CO line To SLT
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