3.14 Power Failure Connections

3.14.1 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 "1.13.11 Power Failure Transfer" in the Feature Manual for further information.

Connection

Power Failure Connection connects a specific SLT and a CO line in the event of power failure. The following analog CO line and extension cards can be used for Power Failure Connections:
• Analog CO line cards: LCOT16 (4 PFT ports) and LCOT8 (2 PFT ports)
• Extension cards: MSLC16 (4 PFT ports), CSLC16 (4 PFT ports), SLC16 (4 PFT ports), DHLC8 (2 PFT ports) and SLC8 (2 PFT ports)
To 1 analog CO line card, connect only 1 extension card.
Note
By programming the 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.
imc3200a.gif

Accessories and User-supplied Items

Accessories (included): none
User-supplied (not included): RJ11 connectors

RJ11 Connector Pin Assignments for Analog CO Line Card

PFT Ports 1 and 2
 

No.

Signal Name

Function

imc2071b.gif
1
R2
Ring port 2
2
R1
Ring port 1
3
T1
Tip port 1
4
T2
Tip port 2
PFT Ports 3 and 4 (for LCOT16 card only)
 

No.

Signal Name

Function

imc2071b.gif
1
R4
Ring port 4
2
R3
Ring port 3
3
T3
Tip port 3
4
T4
Tip port 4

RJ11 Connector Pin Assignments for Extension Card

PFT Ports 1 and 2
 

No.

Signal Name

Function

imc2071b.gif
1
T2
Tip port 2
2
T1
Tip port 1
3
R1
Ring port 1
4
R2
Ring port 2
PFT Ports 3 and 4 (for MSLC16/CSLC16/SLC16 card only)
 

No.

Signal Name

Function

imc2071b.gif
1
T4
Tip port 4
2
T3
Tip port 3
3
R3
Ring port 3
4
R4
Ring port 4