Installation and Maintenance Manual

Avaya B179 SIP Conference Phone Installation and Administration Guide

HEADSET AND PA INSTALLATION AND SETTINGS

PA SETTINGS

To match several types of situations and equipment, there are some settings available in

the Avaya B179 menu.

Activating internal microphone and speakers



These settings are not available via the web interface.



Select > SETTINGS > BASIC > PA (6,1,6).



Select INTERNAL MIC and press OK to switch between on (shaded box) and off.



To ensure maximum audio quality, do not use the internal microphone and external

microphones connected via the PA box at the same time.



Only the internal microphone is turned off. Any external microphones connected to the

Avaya B179 are still turned on.



Select INTERNAL SPKR and press OK to switch between on (shaded box) and off.



To ensure maximum audio quality, do not use the internal speakers and external

speakers connected via the PA box at the same time.

Adjusting microphone volume from PA



During a call, select > PA > PA MONITOR.



Adjust the microphone volume from the mixer so that the level on the display screen is

around 10–12 when speaking in a normal tone.

Adjusting PA calibration manually

It is possible to calibrate the duplex performance of the conference phone when it is con-

nected to a PA system. The calibration level can be set automatically by the Avaya B179

or adjusted manually to any value between 0 and 5 (0 being full duplex).

• Increase the calibration if the other party experiences disturbing echo.

• Decrease the calibration if the other party experiences low duplex, i.e. your voice is

muted or clipped when the other party is speaking.