Polycom Microphone Settings

Date: 10:24 PM 4/5/2009 -0600 (CST)

I have modified facetphone2:/home/PlcmSpIp to lower the microphone gain and to increase the sidetone in the earpiece.

Sidetone is in increments of 2 -12 (loud) to -24 (soft) default is -24.
tx.analog (microphone) is in increments of 3 12 (loud) to -36 (soft) default is 3.
rx.analog (earpiece) is in increments of 3 0 (loud) to -30 (soft) default is 0.

NEW
voice.gain.rx.analog.handset.sidetone="-16"
voice.gain.rx.analog.headset.sidetone="-16"
voice.gain.tx.analog.handset="-3"
voice.gain.tx.analog.headset="-3"
OLD
voice.gain.rx.analog.handset.sidetone="-24"
voice.gain.rx.analog.headset.sidetone="-24"
voice.gain.tx.analog.handset="3"
voice.gain.tx.analog.headset="3"

This should both reduce bark-back and reduce the feeling that you need to talk very loudly to be heard.

Reboot your phone to pick up the new settings.

Hold down until it chirps and then says rebooting.

VOL -
VOL +
HOLD
MESSAGES

Example 0000000000-phone.cfg file:

file start

<?xml version="1.0" standalone="yes"?>
<!-- STA-100 PC501 Overrides -->
<phone_config>
            <overrides
                  reg.1.ringType="3"
                  lcl.datetime.date.format="D,Md"

                  voice.gain.tx.analog.handset="3"
                  voice.gain.tx.analog.preamp.handset="18"
                  voice.gain.rx.analog.handset.sidetone="20"

                  voice.gain.tx.analog.headset="3"
                  voice.gain.rx.analog.headset="3"
                  voice.gain.tx.analog.preamp.headset="23"
                  voice.gain.rx.analog.headset.sidetone="-16"

                  voice.volume.persist.handset="1"
                  voice.volume.persist.headset="1"
                  voice.volume.persist.handsfree="1"

                  tone.dtmf.chassis.masking="0"
                  tone.dtmf.viaRtp="1"
                  tone.dtmf.rfc2833Control="1"

            />
</phone_config>

file end