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Chapter 14 — Installing Power Failure Transfer Units

This chapter describes how to install a QUA6 Power Failure Transfer Unit (PFTU). This chapter contains the following procedure:

Procedure 23: “Installing the PFTU” on page 185 You can connect PFTUs to the Main Chassis.

Note: The QUA6 PFTU operates with loop start and ground start CO trunks. With ground start trunks, the associated telephone set must have a ground start button.

If you require power failure backup as a fail safe for this system, use analog trunks. A PFTU does not support digital trunks.

Installing the PFTU

Refer to the equipment layout plan to determine where to locate the PFTU. See “Chapter 4 — Creating an equipment layout plan and a card slot assignment plan” on page 69.

Procedure 23

Installing the PFTU

1Install the PFTU on the wall near the system cross-connect terminal. Fasten the PFTU in position with four screws.

2Install 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.

3Label the pairs of the J1 cable on the cross-connect terminal block as shown in Figure 56 on page 186.

Option 11C Mini Planning and Installation Guide

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Nortel Networks Option 11C Mini manual Installing Power Failure Transfer Units, Installing the Pftu, 185