Page 150 of 456 Installing Power Failure Transfer Units
2For each trunk assigned to the PFTU.
•Connect the tip and ring of the CO card to the third pair of the assigned PFTU.
•Connect the tip and ring of the trunk to the fourth pair of the assigned PFTU.
End of Procedure
Installing QUA6 PFTUs
QUA6 PFTUs are used for Large System installations. The QUA6 PFTU is powered from an auxiliary
Figure 60 on page 146 shows a high-level view of QUA6 PFTU alarm connections. For PFTU operation, the wiring from the following equipment cross-connects through termination areas at the MDF:
1PFTU
2Auxiliary
3System monitor
4Attendant console (optional)
5Designated telephones
6Central Office trunks
