Polycom SIP 2.2.0 Administrator's Manual page 149

Attribute
voice.volume.persist.handset
voice.volume.persist.headset
voice.volume.persist.handsfree
Attribute
voice.gain.rx.analog.handset
voice.gain.rx.analog.headset
voice.gain.rx.analog.chassis
voice.gain.rx.analog.chassis.IP_300
voice.gain.rx.analog.chassis.IP_330
voice.gain.rx.analog.chassis.IP_430
voice.gain.rx.analog.chassis.IP_601
voice.gain.rx.analog.chassis.IP_650
voice.gain.rx.analog.ringer
voice.gain.rx.analog.ringer.IP_300
voice.gain.rx.analog.ringer.IP_330
voice.gain.rx.analog.ringer.IP_430
voice.gain.rx.analog.ringer.IP_601
Volume Persistence <volume/>
The user's selection of the receive volume during a call can be remembered
between calls. This can be configured per termination (handset, headset and
hands-free/chassis). In some countries regulations exist which dictate that
receive volume should be reset to nominal at the start of each call on handset
and headset.
Permitted
Values
0, 1
0, 1
0, 1
Gains <gain/>
The default gain settings have been carefully adjusted to comply with the
TIA-810-A digital telephony standard.
Polycom recommends that you do not change these values.
Default Interpretation
0 If set to 1, the receive volume will be
remembered between calls.
0
If set to 0, the receive volume will be reset
to nominal at the start of each call.
1
Configuration Files
Default
0
0
0
-6
0
0
6
0
0
-6
0
0
6
A - 37