INSTALLATION
Customer-provided paging equipment can also be connected to ZTN76 or ZTlN77 CO trunk CPs. Connection to the system is made through the TAE appearance of the Tip/Ring pair of the CO trunk CP (See Appendix A for connection details). A paging equipment interface kit D-181900 consisting of a Universal Telephone Access Module (UPAM) and a -48 VDC power supply, PRS-48, is required unless all of the following conditions exist:
●Paging equipment is FCC registered.
●Paging equipment does not require a contact closure for proper operation.
●A trunk interface is provided.
If kit D-181900 is required, make connections using 4-pair inside wiring as listed below (Figure 2-59):
1.Connect UPAM chassis ground to building ground.
2.Connect UPAM terminals PT and PR to paging equipment.
3.Connect UPAM terminals +24/48 and -24/48 to respective PRS-48 power supply terminals +48VDC and -48VDC. For ZTN76 ground start CP only, connect +48VDC to System 25 system ground which appears on the TAE block (Appendix A).
4.Connect UPAM terminal R to trunk CP ring lead appearing on TAE block.
For ZTN76 ground start CP connect UPAM terminal T to UPAM terminal N.O. and connect UPAM terminal COM to trunk CP tip lead appearing on TAE block.
For ZTN77 loop start CP connect UPAM terminal T directly to trunk CP tip lead appearing on TAE block.
If kit D-181900 is not required, use 4-pair inside wiring and connect paging equipment directly to trunk CP tip and ring leads appearing on TAE block.
