Table 5-4: Voice And Fax Tab Parameters Description - AudioCodes MP-20x User Manual

MP-20x Telephone Adapter
Parameter
Gain Control
Enable Automatic Gain
Control
Automatic Gain Control
Direction
Target Energy
Jitter Buffer
Minimum Delay
Optimization Factor
Silence Compression
Enable Silence
Compression
Enable G.711/G.726
Comfort Noise
Echo Cancellation
Enable Echo
Cancellation
Fax and Modem Settings
Fax Transport Mode
Max Rate
Max Buffer
Max Datagram
Version 3.0.1

Table 5-4: Voice and Fax Tab Parameters Description

When enabled (when the box is checked), the device adjusts the voice
volume automatically to compensate for a weak or loud signal.
Determines whether the AGC is located before the Encoder input or after
the Decoder output.
The required output energy of the AGC.
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). Default = 35
msec.
The adaptation rate of the jitter buffer mechanism. Higher values cause the
jitter buffer to respond faster to increased network jitter. Default = 7.
Check to enable silence compression for reducing the network bandwidth
consumption. Default = Disabled.
When the Comfort Noise generation feature is enabled and silence is
detected, the device transmits a series of parameters called Silence
Information Descriptor (SID), which are used to reproduce the local
background noise at the remote (receiving) side.
Check to enable echo cancellation (disabling echo cancellation should be
done for testing purposes only). Default = Enabled.
Selects the way fax calls are handled:
Transparent = Fax is transferred in-band (like a voice call) (can be used if
the codec is G.711)
T.38 Relay = Fax is relayed to the remote side according to the T.38
standard
VBD = (Voice Band Data) Switch to G.711 via SIP messaging
Bypass = An automatic switch to AudioCodes' proprietary payload type
(102, 103).
The maximum fax rate. Select from the drop-down list either:
2.4 Kbps, 4.8 Kbps, 7.2 Kbps, 9.6 Kbps, 12 Kbps or 14.4 Kbps (default).
Note: This parameter appears only if 'Fax Transport Mode' is "T.38 Relay".
The maximum amount of T.38 data stored on the MP-20x DSP. The valid
range is 128 to 2048. The default is 1024.
The maximum total size of TCP/UDPTL packets that can be received at the
remote gateway. The valid range is 160 to 1020. The default is 320.
5. Configuring VoIP Parameters
Description
51 July 2010