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Page 438 of 466 Installing and cross-connecting a Power Fail Transfer Unit
NN43041-310 Standard 01.11 October 2008
The following procedures are provided in this chapter:
1 Procedure 106: "Installing and connecting a QUA6 PFTU" on page 438
2 Procedure 107: "Connecting an analog (500/2500-type) telephone to a
PFTU" on page 446
3 Procedure 108: "Connecting a Trunk to a PFTU" on page 448
Installing and connecting a QUA6 PFTU
Follow Procedure 106 to install and connect a QUA6 PFTU. Refer to the
equipment layout plan for the location of the PFTU.
Note: The QUA6 PFTU operates with loop-start and ground-start
Central Office trunks. With ground start trunks, the associated telephone
set must have a ground start button.
Procedure 106
Installing and connecting a QUA6 PFTU
1 Install the PFTU on the wall near the system cross-connect terminal.
Fasten the PFTU in position with four screws.
2 Install an NE-A25B-type 25-pair cable from connector J1 on the faceplate
of the PFTU to its assigned location at the cross-connect terminal.
3 Label the pairs of the J1 cable on the cross-connect terminal block as
shown in Figure 178 on page 438.
Figure 178
J1 cable labels
Control PFT1 PFT2 PFT3 PFT4 PFT5
PFT1
Power
Pairs
1 to 4
Pairs
1 to 4
Pairs
1 to 4
Pairs
1 to 4
Pairs
1 to 4
Pairs
1 to 4
Pairs
1 to 4
Label the pairs on the terminal block as shown. If using
BIX blocks, attach the appropriate designation strip.