3.4.11  

PFT1 (not for U.S.), PFT4 (not for U.S.) 
 

Introduction  
In the event of a power failure or system error in HiPath 3800, analog trunks can be transferred (ALUM) to designated analog telephones. These are:
 •   1 analog trunk with a PFT1 (Power Failure Transfer) board
 •   4 analog trunks with a PFT4 board
When using an analog telephone for outgoing calls, you may need to adapt its signaling method to match the signaling method of the connected trunk.

ALUM using PFT1/PFT4  
 Figure 3-150   ALUM Using PFT1/PFT4 (not for U.S.)
 

Installation location of the PFT1 and PFT4 board (MDFU/MDFU-E)  
Wire PFT1 or PFT4 into the MDFU or MDFU-E. The boards require -48 V. For the assignments of both boards, see Figure 3-152.
 Figure 3-151   Installation Location of PFT1 and PFT4 (MDFU/MDFU-E) (not for U.S.)
 

PFT1 and PFT4 board assignment  
 Figure 3-152   PFT1 (S30777-Q539-X) and PFT4 (S30777-Q540-X) Board Assignment