Avaya 555-233-116 manual 1151A and 1151A2 power supplies, Replacing the batteries

Auxiliary power supplies

Replacing the batteries

To maintain back-up protection and battery reliability, replace batteries every four years.

Storing the batteries in inactive units

To prevent leakage when the power unit is not in use for several months or more, remove the batteries and store them separately.

Repairing short circuits and resetting red LEDs

A red LED next to any of the 32 power output connectors indicates a short circuit in the building wiring or the terminal equipment. To reset the LED:

1.Disconnect the terminal equipment from the wall jack.

2.If the LED goes off, the terminal equipment is faulty. Replace it.

3.If the LED is still lit, find and repair the short circuit in the building wiring.

4.Reconnect the terminal equipment to the wall jack, and re-test.

1151A and 1151A2 power supplies

The 1151A is a standard (no battery backup) power supply unit. The 1151A2 is a battery backup version of the 1151A. Either power supply can support one telephone with or without an adjunct.

The 1151A and 1151A2 power supplies can supply local power to ISDN-T 7400-, 7500-, 8400-, and 8500-series voice terminals connected to a system, and to the DCP 7444 voice terminal or 302C attendant console that need auxiliary power for its display. The unit can supply power to adjunct equipment such as S201A and CS201A speakerphones, or a 500A headset adapter attached to any currently manufactured analog, DCP, or ISDN-T voice terminal equipped with an adjunct jack.

The power supply has the following specifications:

■A single output of -48 VDC, 0.4 A.

■Either a 120 VAC 60-Hz power source (105 to 129 VAC) or a 220/230/240 VAC 50-Hz power source (198 to 274 VAC).

■Automatic input voltage selection.

■Output capacity of19.2 W.

■Maximum loop range of 250 ft. (77 m).

■Use of 2 modular jacks. PHONE jack pins 7 and 8 (- and +, respectively) provide power.

40 Issue 4 October 2002 555-233-116