Specifications

310HD IP Phone
Administrator's Manual 52 Document #: 299-13801
4.6.4 Configuring Voice Parameters
The voice parameters are configured in the ‘Voice’ page, as described below.
¾ To define the voice parameters:
1. Access the ‘Voice’ page (Configuration tab > Voice Over IP menu > Voice).
Figure 4-11: Voice Page
2. To configure Automatic Gain Control (AGC), perform the following:
a. From the ‘Enable Automatic Gain Control’ drop-down lists, select “Enable” if you want
the phone to automatically adjust the voice volume to compensate for a weak or loud
signal. If you enable AGC, the following fields appear:
♦ Automatic Gain Control Direction: Determines whether the AGC is located
before the Encoder input (“For Local User”) or after the Decoder output (“For
Remote User”).
♦ Target Energy: The required output energy (in dBm) of the AGC.
3. Under the Jitter Buffer group, perform the following:
a. In the ‘Minimum Delay’ field, enter 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.
b. From the ‘Optimization Factor’ drop-down list, select the adaptation rate of the jitter
buffer mechanism. Higher values cause the jitter buffer to respond faster to increased
network jitter. The default is 7.
4. From the ‘Enable Silence Compression’ drop-down list, select “Enable” to enable silence
compression for reducing the network bandwidth consumption. The default is disabled.
5. Click Submit.