Avaya 555-233-116 manual Typical 909A/B universal coupler

909A/B universal coupler

			909_brkt KLC 042296
1.	909A/B universal coupler	4.	J3 7-pin modular jack
2.	J1 8-pin modular jack	5.	DIP switch location
3.	J2 8-pin modular jack

Figure 1. Typical 909A/B universal coupler

The 909A is the direct current (DC) version of the coupler, and cabinet power supplies -48 VDC power. The 909B is the alternating current (AC) version, and power is supplied from a separate power supply (such as the KS-22911L2).

The DIP switches on the unit set:

■Protection/Paging selection — For AUX trunk paging and malicious call trace, set to C2. Set the switch to C1 for all other applications.

■Output attenuation (-9 or -15 dBm) — Setting depends on output level of music source.

■Output impedance (8 ohms, 1.5 kΩ , and 50 kΩ ) —This switch only requires setting if the Protection/Paging switch is set to C2 and the coupler is supplying background music to a customer-supplied paging amplifier.

The pinouts for J1, J2, and J3 are provided in Table 2, Table 3, and Table 4. Refer to these tables when connecting music or paging equipment.

26 Issue 4 October 2002 555-233-116