Avaya CMC1 manual Install 909A/B universal coupler, Typical 909A/B universal coupler

Install 909A/B universal coupler

Install 909A/B universal coupler

The 909A/B universal coupler is used with paging, malicious call trace, and music-on-hold equipment that is not approved for use with the public network.

Figure 111 shows a typical 909A/B universal coupler. For additional installation and switch setting information, refer to 909A/909B Universal Coupler Installation Instructions, which is normally shipped with the 909A/909B Universal Coupler.

Note:

If the music source is registered by the FCC (in the USA) or an equivalent body, the 909A/B universal coupler is not required.

Figure 111: Typical 909A/B universal coupler

909_brkt KLC 042296

Figure notes:
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

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.

Issue 10 June 2005 343