Specifications

310HD IP Phone
Administrator's Manual 80 Document #: 299-13801
6.2.6 Voice
Table 6-7: Voice Configuration File Parameters
Parameter Description
Jitter Buffer
voip/audio/jitter_buffer/
min_delay
The initial and minimal delay of the adaptive jitter buffer mechanism, which
compensates for network problems. The value should be set according to the
expected average jitter in the network (in milliseconds). The default is 35
msec.
voip/audio/jitter_buffer/o
ptimization_factor
The adaptation rate of the jitter buffer mechanism. Higher values cause the
jitter buffer to respond faster to increased network jitter. The default value is 7
and the valid range is 1-13.
voip/audio/echo_cancell
ation/enabled
Enables echo cancellation (disabling echo cancellation should be done for
testing purposes only).
 0 = Disable
 1 = Enable (default)
Automatic Gain Control (AGC)
voip/audio/automatic_ga
in_control/auto_gain_en
abled
Enables the AGC. AGC automatically adjusts the phone’s voice volume to
compensate for weak or loud signals.
 0 = Disable
 1 = Enable
voip/audio/automatic_ga
in_control/auto_gain_loc
ation
Determines whether the AGC is located before the Encoder input (“For Local
User”) or after the Decoder output (“For Remote User”).
voip/audio/automatic_ga
in_control/auto_gain_tar
get_energy
The required output energy (in -dBm) of the AGC.
The valid value range is 0 to 40.
Silence Compression
voip/audio/silence_comp
ression_enable
Enables silence compression for reducing the network bandwidth
consumption.
 0 = Disable (default)
 1 = Enable