Avaya B159 Series Manual de usuario
PA Interface Box for Avaya B159/
B179 Conference Phones
Quick Setup Guide
16-603919 Issue 1
February 2011
The PA interface box connects the conference phone with an existing PA system. To match
several types of situations and equipment, there are some settings available in the Avaya B159/
B179 menu, see the following pages in this setup guide.
Parts included
• Interface box
• Connection cable, 2.5 metres
Output specication
Connector RCA
Impedance 600Ω
Output level 200mV RMS
Connecting the PA interface box
Always disconnect the power supply from the electrical outlet before disconnecting or
connecting equipment to the Avaya B159/B179.
Connect the PA interface box to the AUX port on Avaya B159/B179 with the included cable.
Connect the external amplier to the RCA connector marked with a speaker.
Connect the microphone mixer to the RCA connector marked with a microphone.
DESCRIPTION AND INSTALLATION
Input specication
Connector RCA
Impedance 5kΩ
Input level 300mV RMS
AUX port
PA interface box
To amplier/speakersTo mixer/microphone2.5 m connection cable
The picture shows the bottom of Avaya B179
Microphones
Loudspeakers
PA interface box Amplifier
Mixer
Optional connection if
the sound from the local
microphones shall be
mixed to the speakers
INSTALLATION SETTINGS
Make sure that the latest rmware is installed before using the PA inteface box. Please see
the user guide for upgrade instructions (support.avaya.com).
Avaya B159 Conference Phone - User Guide (16-603914)
Avaya B179 SIP Conference Phone - User Guide (16-603918)
Changing the auxiliary port setting
Press MENU and select SETTINGS > BASIC > AUX PORT (Avaya B159: SETTINGS > AUX
PORT ).
Select the PA option to activate features for external microphone mixer and PA system.
Press OK to conrm.
Do not select the PA option unless a PA system is connected. This option turns off the
internal microphone and speakers.
Activating and deactivating of internal microphone and internal speakers
The internal microphone and speakers are turned off by default when the PA box is connected.
It is possible to reactivate them if the PA system only is going to be used for loudspeakers.
Press MENU and select SETTINGS > BASIC > PA (Avaya B159: SETTINGS > PA ).
Select INTERNAL MIC or INTERNAL SPKR and press OK to switch between ON (shaded
box) and OFF.
To ensure maximum audio quality, do not use internal and external microphones/speakers
connected via the PA interface box at the same time.
Adjusting microphone volume from the PA system
PA monitor can be used to adjust the microphone level from an external microphone mixer.
Make a call.
Press MENU and select PA > MONITOR.
Adjust the microphone level from the mixer so that this level value on the display screen is
around 10–12 when speaking in a normal tone of voice.
Adjusting PA calibration manually
If needed it is possible to calibrate the full duplex performance. The calibration value can
be set to AUTO or be adjusted manually in steps from 0 to 5 where 0 is the highest grade of
duplex.
• Increase the calibration if the remote party experiences disturbing echoes.
• Decrease the calibration if the remote party experiences low duplex, i.e. your voice is
muted or clipped when the other party is speaking.
The position of the PA system’s microphones and speakers and the amplier’s settings may
affect full duplex performance.
Make a call.
Press MENU and select PA > CALIBRATION.
AUTO is the default setting and is recommended in most cases. The gure shown in
brackets is the measured calibration value.
Select different levels and compare the audio quality to achieve your preferred setting.
NB. You must ask the person you are calling to assess the effect of the adjustments you
make.
CALIBRATION SETTINGS
110233-61-001 rev 1a
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4
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