Avaya 6211 Guia Do Utilizador

This chapter describes the power supplies for adjuncts such as speakerphones, display modules, or voice
terminals. It further describes the adjuncts served by each supply and the AC power requirements of
each power supply.  These power supplies serve adjuncts for both System 85 and DEFINITY® Generic

2 Communications Systems (hereafter abbreviated DEFINITY Generic 2 or Generic 2).

The customer designates a certain number of voice terminals to be fitted with one or more of the

following adjuncts:

● 

Speakerphone

● 

Display module

● 

Call coverage module

● 

Headset

● 

Data stand

● 

Digital terminal display module

All these adjuncts require power either from an individual power supply located at the workstation, an
individual power supply located in the satellite closet, or a bulk power supply located in the satellite
closet. Diagrams showing how power supplies are connected at the workstation or satellite closet to a
voice terminal appear in AT&T System 75 Wiring (555-200-111).

Three power units can be used individually to power adjuncts: the 2012D transformer, the 329A power
supply, and the KS22911 power supply.

●   

2012D — A transformer that operates with the 248B adapter off 110 VAC from a wall outlet.  It
supplies 18 VAC over 24 AWG wire to a speakerphone or headset up to 150 ft away. The 2012D
transformer is used only at the workstation.

●   

329A — A power supply that can be used locally or in a satellite closet, it is capable of powering
any adjunct that can be added to a digital voice terminal, and has a power output of 25 watts. (The
329A has been replaced by the 346A as the -48 VDC power supply of choice, but 329A units in the
field are still supported.)

The 329A can supply -48 VDC over 24 AWG wire to:

— One digital module plus speakerphone or headset up to 490 ft
— Two digital modules plus speakerphone or headset up to 330 ft

— Three digital modules plus speakerphone or headset up to 240 ft